A modular RV telescopic mechanism and telescopic box

Abstract

This application relates to a modular RV telescopic mechanism and telescopic box. The modular telescopic mechanism and telescopic box are made of lightweight materials, require no welding, have a simple processing flow, stronger load-bearing capacity, lower cost, and better stability. They can be directly installed on the vehicle body with simple tools to extend the usable length space of the vehicle. Different vehicle models can be adapted by selecting telescopic mechanisms of the same structural principle but different sizes and matching them with telescopic box modules of different sizes to meet diverse usage needs, while reducing capital and transportation costs.

Description

Technical Field

[0001] This application relates to a modular RV telescopic mechanism and telescopic box, belonging to the technical field of increasing the usable length and space of vehicles. Background Technology

[0002] Existing vehicles and RVs can be equipped with telescopic mechanisms and sliding-out bodies to increase the interior space of the RV. When the vehicle is stopped, the sliding-out body extends outward from the rear door or side opening, thereby increasing the interior space of the vehicle.

[0003] The applicant's Chinese patent application CN222793363U relates to a cantilevered vehicle body sliding system. This patented sliding system has the following potential improvements over existing sliding bodies:

[0004] Firstly, for cantilevered moving components, under the same load-bearing capacity, a single guide rail installed in the air is heavier, less stable in operation, and more expensive than a smaller model of a double guide rail installed side by side.

[0005] Secondly, no reinforcing connecting plate is installed between the drive unit and the cantilevered moving component. Due to the lack of a reinforcing connecting plate, the load-bearing strength is insufficient. The rack and guide rail are directly fixed to the inside of the load-bearing box, and the rack is directly installed on the inner wall of the load-bearing box, which is difficult to observe. This leads to problems such as poor precision of gear and rack meshing installation and inconvenient maintenance.

[0006] Thirdly, in the cantilevered moving assembly, the first guide rail and the second slider are connected by a Z-shaped connecting plate. Due to the shape limitation of the Z-shaped connecting plate, it is prone to deformation during load-bearing movement.

[0007] Fourth, in the sliding system, the carrier box and the sliding box are fixedly connected. The carrier box is fixedly set on the lower sides of the sliding box. It is not a modular connection method, which makes it inconvenient to disassemble and install. In addition, the long strip opening at the bottom of the carrier box is not equipped with a sealing device, resulting in poor sealing effect.

[0008] Fifth, the sliding-out RVs currently sold on the market are not fully modular designs; they are fixed units before leaving the factory, which consumers cannot disassemble with simple tools, making maintenance difficult. This results in higher production, transportation, and purchase costs, and consumers have fewer options.

[0009] To address the aforementioned issues, this application provides a modular RV telescopic mechanism and telescopic housing. Summary of the Invention

[0010] To address the aforementioned problems, this application proposes a modular RV telescopic mechanism and telescopic body, employing the following technical solution:

[0011] A modular RV telescopic mechanism includes a combined guide rail mechanism, a drive unit, a support base, and a reinforcing connecting plate. The combined guide rail mechanism comprises: two identical parallel-mounted primary guide rails fixed to the reinforcing connecting plate; two identical parallel-mounted sliders (single one and two identical sliders, respectively) connected and fixed to a load-bearing fixed plate and slidably connected to the two primary guide rails; two identical parallel-mounted secondary guide rails fixed to the load-bearing fixed plate; and two identical parallel-mounted sliders (single three and two identical sliders, respectively) fixed to the support base and slidably connected to the two secondary guide rails. The drive unit includes a rack, a gear, a commutator, a reducer, and a motor. The rack is fixed to the reinforcing connecting plate, the gear meshes with the rack, and the motor drives the gear through the reducer and the commutator. The support base includes a Z-shaped support frame and a commutator frame, the bottom of which is fixed to the vehicle body floor. The combined guide rail mechanism, the drive device, the support base, and the reinforcing connecting plate together constitute an independently operating two-stage telescopic module or are used as a connecting load.

[0012] Using the above technical solution, two parallel-mounted primary guide rails are fixed to a reinforcing connecting plate, which enhances the strength of the guide rails and improves the operating load-bearing capacity of the telescopic mechanism. Compared to a single guide rail, the two parallel-mounted, smaller-sized primary guide rails and the two parallel-mounted secondary guide rails are lighter and less expensive; moreover, under the same load-bearing capacity, the dual-guide rail system operates more smoothly and achieves a higher level of weight reduction. Each guide rail is equipped with four sliders, and the guide rails and sliders are connected by a sliding connection, which reduces friction and enables the smooth sliding out of the two-stage mechanism. Slider one and slider two are connected to the secondary guide rails through a load-bearing fixing plate. Compared to the single-guide rail installation method in the prior art, the load-bearing capacity is significantly enhanced, and deformation is less likely to occur during load-bearing.

[0013] Meanwhile, this application improves the installation position of the rack: In the prior art, the rack is installed on the inner side wall of the bearing box, and the installation positions of some racks and gears cannot be observed with the naked eye, resulting in problems such as cumbersome installation, lack of precision, uneven force distribution, and poor meshing between the rack and gears. This application directly fixes the rack of the telescopic mechanism to the reinforcing connecting plate, making the rack installation position visually apparent, resulting in more precise meshing between the rack and gears and more convenient maintenance.

[0014] Furthermore, this application improves the Z-type connecting plate by replacing it with a load-bearing fixing plate that is parallel to the guide rail and slider. This solves the problem of the Z-type connecting plate's shape limitation and its tendency to deform during load-bearing movement. It also facilitates the installation of double guide rails and double sliders, increases load-bearing capacity, and makes operation more stable.

[0015] In addition, this application also improves the reducer and commutator by separating them. The reducer can convert the high-speed operation of the motor into low-speed operation, while increasing the output torque and transmitting the increased torque to the commutator. The commutator can change the direction of motion of the motor output shaft, and the drive device can convert the rotational motion of the gear into the linear motion of the rack, thereby driving the telescopic mechanism to complete the sliding and retraction actions. The support base bears the weight of the telescopic mechanism and transmits the weight to the vehicle body floor, ensuring that the telescopic mechanism can extend in the air without interfering with the vehicle body.

[0016] Preferably, the first-stage guide rail is provided with a first-stage sliding baffle and a first-stage retracting baffle at both ends; the load-bearing fixing plate is provided with a first-stage sliding limiting plate and a first-stage retracting limiting plate; the second-stage guide rail is provided with a second-stage sliding baffle and a second-stage retracting baffle at both ends; and the Z-shaped support frame is provided with a second-stage sliding limiting plate and a second-stage retracting limiting plate at both ends.

[0017] By adopting the above technical solution, the first-stage sliding baffle and the first-stage retracting baffle ensure that the telescopic mechanism will not slip during the first-stage sliding out and retraction; the first-stage sliding limit plate and the first-stage retracting limit plate respectively drive the second-stage guide rail to slide out and retract. The setting of the second-stage sliding baffle and the second-stage retracting baffle ensures that the telescopic mechanism will not slip during the second-stage sliding out and retracting process; the second-stage sliding limit plate and the second-stage retracting limit plate respectively realize the end of the sliding out and retraction of the second-stage guide rail.

[0018] The combined guide rail mechanism, drive unit, support base, and reinforcing connecting plate together constitute an independently operating module. The specific dimensions of this module can be adapted to the needs of different vehicle models, but it always maintains the characteristic of being an independent module that can be disassembled and installed as a whole. This telescopic mechanism can not only be installed on RVs, but also on other vehicle models that need to expand the interior space, giving consumers more choices. This patented design allows the telescopic mechanism to be produced, tested, transported, and sold independently. When in use, simply fix the Z-shaped support frame to the floor of other vehicle bodies, and install any load that needs to be telescopic on the reinforcing connecting plate to achieve two-stage telescopic function.

[0019] A modular RV telescopic body includes a primary module kit, a secondary module kit, a primary upper component, a secondary upper component, and a split door. The primary module kit includes a primary lower component and two primary connecting boxes symmetrically fixed to both sides of the component. The secondary module kit includes a secondary lower component and two secondary connecting boxes symmetrically fixed to the upper sides of the component. A modular RV telescopic mechanism is detachably installed within each primary connecting box. The reinforcing connecting plate of the telescopic mechanism is fixed to the inner wall of the primary connecting box, and the telescopic mechanism has a Z-shaped support frame. The primary connecting box passes through the primary elongated opening at the bottom and is fixed to the vehicle body floor. Another modular RV telescopic mechanism is detachably installed inside the secondary connecting box. The reinforcing connecting plate of this telescopic mechanism is fixed to the inner wall of the secondary connecting box, and the Z-shaped support frame of this telescopic mechanism passes through the secondary elongated opening at the bottom of the secondary connecting box and is fixed to the primary connecting box. Both the primary and secondary connecting boxes have detachable primary and secondary sealing plates on the side away from the vehicle body, for inspecting the internal telescopic mechanism without disassembling the box body.

[0020] By adopting the above technical solution, the primary and secondary module kits can achieve two-stage telescopic extension, increasing the vehicle's usable length and interior space. Primary and secondary module kits, primary and secondary upper components, and split doors of appropriate sizes can be provided for different vehicle models to accommodate them. The symmetrical arrangement of the primary and secondary connecting boxes allows the primary and secondary module kits to slide out and retract smoothly. A modular RV telescopic mechanism drives the primary and secondary connecting boxes to slide out and retract respectively, enabling the overall telescopic body to achieve two-stage extension, significantly increasing the usable interior space.

[0021] Preferably, the primary connecting box is provided with screw holes or T-shaped platform one and T-shaped platform two; the secondary connecting box is provided with screw holes or T-shaped platform three and T-shaped platform four; and a matching modular connection method is selected according to the different structures of the telescopic box.

[0022] By adopting the above technical solution, the fixed installation method of the carrier box in the prior art is improved, and the carrier box in the prior art is changed into a separate detachable module, namely the connecting box in this application. This application designs screw holes or T-shaped platforms for assembly on the primary connecting box and the secondary connecting box, and the corresponding matching connection method can be selected according to the upper structure form of the two-stage telescopic box, so that the connecting box can be detachably connected to other modules. Compared with the fixed connection method of welding, it is more convenient for installation and maintenance, and the usage is more diversified.

[0023] Preferably, slots A are provided on both sides of the primary elongated opening, and a sealing strip A is provided in slot A; slots B are provided on both sides of the secondary elongated opening, and a sealing strip B is provided in slot B.

[0024] By adopting the above technical solution, the sealing strip is inserted into the sealing slot and closely adheres to the vertical plate of the Z-shaped support frame, thereby achieving a seal on the connecting box, isolating the external environment from the telescopic mechanism, protecting the telescopic mechanism, improving precision, and extending the service life of the telescopic mechanism.

[0025] Preferably, the primary module kit also includes a locking mechanism one, which is fixedly installed on the vehicle body floor plate, and the secondary module kit also includes a locking mechanism two, which is installed on the secondary lower component.

[0026] By adopting the above technical solution, when the primary module kit and the secondary module kit slide out, the primary module kit and the vehicle body, as well as the primary module kit and the secondary module kit, can be locked together; when the primary module kit and the secondary module kit are retracted, the primary module kit, the secondary module kit and the vehicle body floor plate are locked together, ensuring structural stability and improving safety in use.

[0027] Preferably, a primary sealing device is provided between the primary upper component and the primary module kit, and a secondary sealing device is provided between the secondary upper component and the secondary module kit.

[0028] By adopting the above technical solution, the primary sealing device installed on the primary upper component and primary module kit can achieve a seal with the vehicle body when it slides out; the secondary sealing device installed on the secondary upper component and secondary module kit can achieve a seal between the primary telescopic box and the secondary telescopic box when it slides out, thereby ensuring the seal between the primary and secondary boxes and the vehicle body. The sealing device can keep the interior space from being affected by the external environment.

[0029] Preferably, the primary upper component can be replaced with a primary split component, the secondary upper component can be replaced with a secondary split component, and the split door can be replaced with a molded door.

[0030] By adopting the above technical solutions, modular production of components is more convenient, eliminating the need for welding, resulting in a neat and aesthetically pleasing appearance, good sealing performance, and direct bending and forming through molds, facilitating large-scale production and improving production efficiency; compared to upper structural components, it also saves more labor costs.

[0031] Preferably, the primary upper component can be replaced with a primary integrated upper module, and the secondary upper component can also be replaced with a secondary integrated upper module. The primary module kit can be replaced with a primary integrated lower component, and the secondary module kit can be replaced with a secondary integrated lower component. The primary integrated upper module and the primary integrated lower component have matching tongue-and-groove slots that mate with T-shaped platform one and T-shaped platform two, and can be connected and used together; the secondary integrated upper module and the secondary integrated lower component have matching tongue-and-groove slots that mate with T-shaped platform three and T-shaped platform four, and can be connected and used together.

[0032] By adopting the above technical solutions, the components are seamless, have better sealing performance, and are bent into a single molded module, making them more aesthetically pleasing. Compared with upper structural components and split molded parts, they are positioned at a higher end, enriching consumers' choices.

[0033] In summary, this application has at least one of the following beneficial technical effects:

[0034] 1. The telescopic mechanism and telescopic box are manufactured in a modular fashion, adaptable to various vehicle models and meeting diverse usage needs. Different vehicle models can be adapted by selecting telescopic mechanisms of the same structural principle but different sizes, combined with telescopic box modules of different sizes, providing consumers with a wide range of choices and enabling personalized customization.

[0035] 2. The telescopic box kit uses modular, lightweight standard profiles, eliminating the need for welding operations. The processing flow is simple, and the loading, unloading, and replacement of parts are efficient and convenient. The integrated molded parts of the first-level module kit and the integrated molded parts of the second-level module kit can be pre-produced independently. On-site, the telescopic mechanism only needs to be installed into the connecting box and fixed to complete the assembly. This reduces costs, shortens the construction period, reduces human error, improves accuracy, ensures quality, and increases production efficiency.

[0036] 3. Lightweight design achieved through telescopic mechanism: Under the same load-bearing capacity, the smaller dual-rail design has lower weight and cost compared to the single-rail design, and operates more smoothly, resulting in a higher level of lightweight design.

[0037] 4. Higher precision of the telescopic mechanism: The rack is mounted on the reinforcing connecting plate, which improves the installation accuracy and allows for a direct view of the meshing state of the gear and rack, making maintenance more convenient.

[0038] 5. Improved stability of telescopic mechanism operation: The Z-type connecting plate is replaced by a load-bearing fixed plate, and the double guide rails and double sliders are installed on the load-bearing fixed plate in a parallel manner, which enhances the load-bearing capacity of the telescopic mechanism and significantly improves its operational stability.

[0039] 6. Improved sealing of telescopic box: A sealing device is installed in the connecting box. While ensuring that the telescopic mechanism can smoothly pass through the long opening to complete the sliding and retraction actions, it not only protects the telescopic mechanism from the connecting box and improves the operational precision, but also prevents outside air from entering the telescopic box, keeping the telescopic box in a sealed state.

[0040] 7. The modular telescopic mechanism and telescopic container can be disassembled for shipment, and occupy less space, which can save space and reduce transportation and purchase costs. Attached Figure Description

[0041] To more clearly illustrate the technical solution of this application, the accompanying drawings used in the description will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 This is a schematic diagram of a modular telescopic mechanism component structure in this application.

[0043] Figure 2 This is an exploded view of a modular telescopic mechanism according to this application.

[0044] Figure 3 3A is a schematic diagram of a modular telescopic mechanism in the non-slid-out state, 3B is a schematic diagram of a modular telescopic mechanism in the first-stage sliding-out state, and 3C is a schematic diagram of a modular telescopic mechanism in the two-stage fully sliding-out state.

[0045] Figure 4 4A is a schematic diagram of a modular telescopic mechanism in its fully extended state; 4B is a schematic diagram of a modular telescopic mechanism in its first-stage retracted state; and 4C is a schematic diagram of a modular telescopic mechanism in its two-stage fully retracted state.

[0046] Figure 5 This is a schematic diagram of the structure of each component of the telescopic box in this application.

[0047] Figure 6 This is a schematic diagram of the overall structure of the telescopic box in this application.

[0048] Figure 7 This is a schematic diagram of the structure of the first-level and second-level module suites in this application.

[0049] Figure 8 This is a schematic diagram of the primary and secondary lower component structures in this application.

[0050] Figure 9 This is a schematic diagram of the primary and secondary connection box structures with screw holes in this application.

[0051] Figure 10 This is a schematic diagram of the primary and secondary connection box structure with T-shaped platform in this application.

[0052] Figure 11 This is a schematic diagram of the combined structure of the primary and secondary connecting boxes and the telescopic mechanism in this application.

[0053] Figure 12 12A is a sectional view of the primary and secondary connecting boxes and telescopic mechanism in the state before they slide out; 12B is a sectional view of the primary and secondary connecting boxes and telescopic mechanism during the sliding out process; and 12C is a sectional view of the primary and secondary connecting boxes and telescopic mechanism in the state after they slide out completely.

[0054] Figure 13 This is a schematic diagram of the process of the telescopic box of the component structure in this application sliding out completely.

[0055] Figure 14 This is a schematic diagram showing the telescopic box structure of the component in this application fully sliding out of the vehicle body.

[0056] Figure 15 15A is a sectional view of the first and second level connecting boxes and telescopic mechanism in the fully extended state; 15B is a sectional view of the first and second level connecting boxes and telescopic mechanism in the retracted state; and 15C is a sectional view of the first and second level connecting boxes and telescopic mechanism in the fully retracted state.

[0057] Figure 16 This is a schematic diagram of the complete retraction process of the telescopic box structure in this application.

[0058] Figure 17 This is a schematic diagram of the telescopic box structure of the component structure in this application being installed on the vehicle body and fully retracted.

[0059] Figure 18 This is an exploded view of the primary and secondary lower component structures in this application.

[0060] Figure 19 This is an exploded view of the primary upper component and the outer covering, and a schematic diagram of the primary sealing device in this application.

[0061] Figure 20 This is an exploded view of the secondary upper component and a schematic diagram of the secondary sealing device in this application.

[0062] Figure 21 This is an exploded view of the split door assembly and its inner and outer coverings, and a schematic diagram of the door sealing strip in this application.

[0063] Figure 22 This is a schematic diagram of the split-type molded parts of the primary and secondary telescopic boxes in this application.

[0064] Figure 23 This is an exploded view of the split-type molded parts of the primary and secondary telescopic boxes in this application.

[0065] Figure 24 This is a schematic diagram showing the installation of the primary and secondary telescopic box-type modular components onto the vehicle body.

[0066] Figure 25 This is a schematic diagram illustrating the retraction of the primary and secondary telescopic box-type molded parts in this application.

[0067] Figure 26 This is a schematic diagram of the integrated modular structure of the primary and secondary telescopic boxes in this application.

[0068] Figure 27 This is a schematic diagram showing the integrated molding module of the primary and secondary telescopic boxes in this application sliding out onto the vehicle body.

[0069] Figure 28 This is a schematic diagram of the retraction of the integrated molding module of the primary and secondary telescopic boxes in this application.

[0070] Explanation of reference numerals in the attached drawings: 1. Reinforcing connecting plate; 2. Primary guide rail; 3. Primary sliding baffle; 4. Primary retracting baffle; 5. Slider 1; 6. Slider 2; 7. Primary sliding limit plate; 8. Primary retracting limit plate; 9. Load-bearing fixing plate; 10. Secondary guide rail; 11. Secondary sliding baffle; 12. Secondary retracting baffle; 13. Slider 3; 14. Slider 4; 15. Secondary sliding limit plate; 16. Secondary retracting limit plate; 17. Z-type support frame; 18. Commutator frame; 19. Rack; 20. Gear; 21. Commutator; 22. Reducer; 23. Motor; 24. Primary connecting box; 2401. T-shaped platform 1; 2402. Slot A; 2403. Sealing strip A; 2404. T-shaped platform 2; 25. Primary long strip opening; 26. Primary sealing plate; 27. Combined guide rail mechanism; 28. Drive unit; 29 Support base; 30 Secondary connection box; 3001 T-shaped platform three; 3002 Slot B; 3003 Sealing strip B; 3004 T-shaped platform four; 31 Secondary long strip opening; 32 Secondary sealing plate; 33 Locking mechanism one; 34 Locking mechanism two; 35 Primary sealing device; 36 Secondary sealing device; 37 Door sealing strip; 51 Primary module kit; 52 Secondary module kit; 53 Primary upper component; 54 Secondary upper component; 55 Split door; 56 Primary lower component; 57 Secondary lower component; 58 Vehicle body; 60 Primary split component; 61 Secondary split component; 62 Molded door; 63 Primary lower integrated component; 64 Secondary lower integrated component; 65 Primary upper integrated module; 66 Secondary upper integrated module. Detailed Implementation

[0071] 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, and not all embodiments. 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.

[0072] Reference Figure 1 , Figure 2 As shown: A modular RV telescopic mechanism includes a combined guide rail mechanism 27, a drive unit 28, a support base 29, and a reinforcing connecting plate 1. The support base 29 includes a Z-shaped support frame 17 and a commutator frame 18. The combined guide rail mechanism 27 is fixed between the reinforcing connecting plate 1 and the Z-shaped support frame 17. The drive unit 28 is fixed on the reinforcing connecting plate 1 and the commutator frame 18. The bottom of the support base 29 is fixed to the vehicle body floor plate.

[0073] The combined guide rail mechanism 27 includes two identical primary guide rails 2, a secondary guide rail 10, a reinforcing connecting plate 1, two identical sliders 5, 6, 13, and 14, and a load-bearing fixing plate 9. The primary guide rail 2 is fixed to the reinforcing connecting plate 1, with a primary sliding baffle 3 and a primary retraction baffle 4 at each end. Slider 5 and 6 are fixed to the load-bearing fixing plate 9 and slidably connected to the primary guide rail 2. The load-bearing fixing plate 9 has a primary sliding limit plate 7 and a primary retraction limit plate 8. The secondary guide rail 10 is fixed to the load-bearing fixing plate 9, with a secondary sliding baffle 11 and a secondary retraction baffle 12 at each end. Slider 3 and 4 are fixed to the Z-shaped support frame 17 and slidably connected to the secondary guide rail 10. The Z-shaped support frame 17 has a secondary sliding limit plate 15 and a secondary retraction limit plate 16 at each end.

[0074] The drive unit 28 includes a rack 19, a gear 20, a commutator 21, a reducer 22, and a motor 23. The rack 19 is fixed on the reinforcing connecting plate 1. The output shaft of the motor 23 is connected to the reducer 22. The output shaft of the reducer 22 is connected to the commutator 21. The commutator 21 is fixed on the commutator frame 18. Its output shaft is connected to the gear 20. The tooth surface of the gear 20 meshes with the tooth surface of the rack 19.

[0075] Reference Figure 3As shown: When a modular RV telescopic mechanism needs to be extended, the motor 23 drives the reducer 22 to rotate, the reducer 22 drives the commutator 21, the commutator 21 drives the gear 20 to rotate, and the rack 19, under the action of the gear 20, converts the helical motion into linear motion, pulling the reinforcing connecting plate 1 to slide outward. The reinforcing connecting plate 1 drives the first-stage guide rail 2 to slide together. After sliding out a certain distance, when the first-stage sliding baffle 3 touches the first-stage sliding limit plate 7, it drives the second-stage guide rail 10 to slide outward. When the second-stage sliding baffle 11 touches the second-stage sliding limit plate 15, the sliding process ends, realizing two-stage sliding extension.

[0076] Reference Figure 4 As shown: When a modular RV telescopic mechanism needs to be retracted, the motor 23 drives the reducer 22 to rotate in the opposite direction. The reducer 22 drives the commutator 21, which drives the gear 20 to rotate in the opposite direction. This drives the rack 19 to pull the reinforcing connecting plate 1 inward. The reinforcing connecting plate 1 drives the first-stage guide rail 2 to slide inward together. After retracting a certain distance, when the first-stage retraction baffle 4 touches the first-stage retraction limit plate 8, it drives the second-stage guide rail 10 to retract inward together. When the second-stage retraction baffle 12 touches the second-stage retraction limit plate 16, the retraction process ends, realizing two-stage retraction.

[0077] Reference Figure 5-6 As shown: A modular retractable RV body includes a primary module kit 51, a secondary module kit 52, a primary upper component 53, a secondary upper component 54, and a split door 55. The primary upper component 53 is fixed to the primary module kit 51, the secondary upper component 54 is fixed to the secondary module kit 52, and the split door 55 is hinged to the secondary upper component 54. The primary module kit 51 includes a primary lower component 56, a primary connecting box 24, and a locking mechanism 33. The primary connecting boxes 24 are symmetrically fixed on both sides of the primary lower component 56, and the locking mechanism 33 is fixedly installed on the vehicle body floor. The secondary module kit 52 includes a secondary lower component 57, a secondary connecting box 30, and a second locking mechanism 34. The secondary connecting boxes 30 are symmetrically fixed on the upper sides of the secondary module kit 52, and the second locking mechanism 34 is installed on the secondary lower component 57.

[0078] Reference Figure 7-11As shown: A modular RV telescopic mechanism is installed inside the primary connecting box 24. This modular telescopic mechanism is fixed to the inner wall of the primary connecting box 24 via a reinforcing connecting plate 1. The primary connecting box 24 has a removable primary sealing plate 26 on the side away from the vehicle body, and a primary elongated opening 25 at the bottom. A support base 29 passes through the primary elongated opening 25 and is fixed to the vehicle body floor, supporting the sliding out and retraction of the primary module kit 51, which is fixed to the vehicle body. The secondary connecting box 30 has a removable secondary sealing plate 32 on the side away from the vehicle body, and a secondary elongated opening 31 at the bottom. The support base 29 inside the secondary connecting box 30 passes through the secondary elongated opening 31 and is fixed to the primary connecting box 24, supporting the sliding out and retraction of the secondary module kit 52.

[0079] In this application, the telescopic mechanism is achieved by fixing the reinforcing connecting plate 1 to the inner wall of the connecting box. The primary connecting box 24 is provided with screw holes or T-shaped platform 1 2401 and T-shaped platform 2404; the secondary connecting box 30 is provided with screw holes or T-shaped platform 3001 and T-shaped platform 4 3004. When connection is required, screws are used for connection according to the different structural forms of the telescopic boxes, or the T-shaped platforms are inserted into the matching slots. Slots A 2402 are respectively provided on both sides of the primary long strip opening 25 at the lower part of the primary connecting box 24. The sealing strip A 2403 is inserted into the sealing slot, and the sealing strip 2403 can fit against the vertical plate of the Z-shaped support frame 17 to achieve sealing of the primary long strip opening 25. The secondary connection box 30 has slots B3002 on both sides of the secondary long strip opening 31 at the bottom. Similarly, the sealing strip B3003 is inserted into the sealing slot. The sealing strip 3003 can fit against the vertical plate of the Z-shaped support frame 17 to seal the secondary long strip opening 31.

[0080] Reference Figure 12-14 As shown: When a modular RV telescopic body needs to be extended and slid out, the modular RV telescopic mechanism drives the primary connecting box 24 to slide outward via the reinforcing connecting plate 1. After the primary connecting box 24 has fully slid out, the locking mechanism 33 locks the primary module kit 51 to the vehicle body. The modular RV telescopic mechanism also drives the secondary connecting box 30 to slide outward. After the secondary connecting box 30 has fully slid out, both telescopic bodies have slid out completely. The locking mechanism 34 locks the primary module kit 51 and the secondary module kit 52, achieving multi-stage sliding and increasing the interior space of the RV.

[0081] Reference Figure 15-17As shown: When a modular RV telescopic body needs to be extended or retracted, locking mechanisms 1 (33) and 2 (34) are unlocked respectively. The modular RV telescopic mechanism, through the reinforcing connecting plate 1, drives the primary connecting box 24 to retract inward. After the primary connecting box 24 is fully retracted, the modular RV telescopic mechanism drives the secondary connecting box 30 to retract inward. After the secondary connecting box 30 is fully retracted, both telescopic bodies are fully retracted, achieving multi-stage retraction. The outward sliding and retraction actions of the two telescopic bodies do not affect each other and are independent of each other.

[0082] Reference Figure 18-21 As shown: the primary upper component 53, secondary upper component 54, split door 55, primary lower component 56, and secondary lower component 57 are all detachable and can be modularly assembled using simple tools. They can also be covered with external panels for an aesthetically pleasing, waterproof, moisture-proof, and externally isolated appearance. Furthermore, a primary sealing device 35 is installed between the primary module kit 51 and the vehicle body, a secondary sealing device 36 is installed between the primary module kit 51 and the secondary module kit 52, and a door sealing strip 37 is installed between the split door 55 and the secondary module kit 52. These sealing devices ensure that the interior space is unaffected by the external environment.

[0083] Reference Figure 22-25 As shown: First-level upper component 53 is replaced by first-level split component 60, second-level upper component 54 is replaced by second-level split component 61, split door 55 is replaced by a molded door, first-level lower integrated component 63 is replaced by first-level module kit 51, and second-level lower integrated component 64 is replaced by second-level module kit 52. First-level split component 60 and second-level split component 61 are both composed of three units and have sealing devices; first-level lower integrated component 63 and second-level lower integrated component 64 are also composed of one-piece molded parts, which can be assembled with simple tools; the molded door 62 is also one-piece molded, making assembly even simpler. This modular production method facilitates component manufacturing without welding, resulting in a neat and aesthetically pleasing appearance, good sealing performance, and direct bending molding through molds, enabling large-scale production and improving production efficiency.

[0084] Reference Figure 26-28 As shown: The first-level upper integrated module 65 can replace the first-level upper component 53, and the second-level upper integrated module 66 can replace the second-level upper component 54. The first-level upper integrated module 65 is provided with a tongue-and-groove slot that matches the first T-shaped platform 2401, and the first-level lower integrated component 63 is provided with a tongue-and-groove slot that matches the second T-shaped platform 2404; the second-level upper integrated module 66 is provided with a tongue-and-groove slot that matches the third T-shaped platform 3001, and the second-level lower integrated component 64 is provided with a tongue-and-groove slot that matches the fourth T-shaped platform 3004; in use, the T-shaped platform on the connecting box is inserted into the matching telescopic box; the upper structure of the telescopic box is bent as a whole to form an integrated module, without seams, with better sealing performance and a more aesthetically pleasing appearance.

[0085] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A modular RV telescopic mechanism, comprising a combined guide rail mechanism (27), a drive unit (28), a support base (29), and a reinforcing connecting plate (1), characterized in that, The combined guide rail mechanism (27) includes: two identical parallel primary guide rails (2) fixed on the reinforcing connecting plate (1); two identical parallel sliders 1 (5) and two identical parallel sliders 2 (6) fixed on the load-bearing fixed plate (9) and slidably connected to the two primary guide rails (2); two identical parallel secondary guide rails (10) fixed on the load-bearing fixed plate (9); two identical parallel sliders 3 (13) and two identical parallel sliders 4 (14) fixed on the support base (29) and slidably connected to the two secondary guide rails (10); the driving device (28) includes a rack (19), a gear... The wheel (20), commutator (21), reducer (22) and motor (23) are connected. The rack (19) is fixed on the reinforcing connecting plate (1). The gear (20) meshes with the rack (19). The motor (23) drives the gear (20) through the reducer (22) and commutator (21). The support base (29) includes the Z-shaped support frame (17) and the commutator frame (18). The bottom of the Z-shaped support frame (17) is used to fix it to the vehicle body floor plate. The combined guide rail mechanism (27), the drive device (28), the support base (29) and the reinforcing connecting plate (1) together constitute an independently operating two-stage telescopic module or a connecting load.

2. The modular RV telescopic mechanism according to claim 1, characterized in that, The first-level guide rail (2) is provided with a first-level sliding baffle (3) and a first-level retraction baffle (4) at both ends; the load-bearing fixing plate (9) is provided with a first-level sliding limit plate (7) and a first-level retraction limit plate (8); the second-level guide rail (10) is provided with a second-level sliding baffle (11) and a second-level retraction baffle (12) at both ends; the Z-shaped support frame (17) is provided with a second-level sliding limit plate (15) and a second-level retraction limit plate (16) at both ends.

3. A modular RV telescopic body, comprising a primary module kit (51), a secondary module kit (52), a primary upper component (53), a secondary upper component (54), and a split door (55), characterized in that, The primary module kit (51) includes a primary lower component (56) and two primary connecting boxes (24) symmetrically fixed to both sides of the component; the secondary module kit (52) includes a secondary lower component (57) and two secondary connecting boxes (30) symmetrically fixed to the upper sides of the component; wherein, a modular RV telescopic mechanism is detachably installed inside the primary connecting box (24), the reinforcing connecting plate (1) of the telescopic mechanism is fixed to the inner wall of the primary connecting box (24), and the Z-shaped support frame (17) of the telescopic mechanism passes through the primary long strip opening (25) at the bottom of the primary connecting box (24) and is fixed. On the vehicle body floor; another modular RV telescopic mechanism is detachably installed inside the secondary connecting box (30). The reinforcing connecting plate (1) of the telescopic mechanism is fixed to the inner side wall of the secondary connecting box (30). The Z-shaped support frame (17) of the telescopic mechanism passes through the secondary long strip opening (31) at the bottom of the secondary connecting box (30) and is fixed on the primary connecting box (24). The primary connecting box (24) and the secondary connecting box (30) are both provided with a detachable primary sealing plate (26) and a secondary sealing plate (32) on the side away from the vehicle body, for inspecting the telescopic mechanism inside without disassembling the box.

4. A modular RV telescopic container according to claim 3, characterized in that, The primary connecting box (24) is provided with screw holes or T-shaped platform one (2401) and T-shaped platform two (2404); the secondary connecting box (30) is provided with screw holes or T-shaped platform three (3001) and T-shaped platform four (3004); the modular connection method is selected according to the different structures of the telescopic box.

5. A modular RV telescopic container according to claim 3, characterized in that, The first-level long strip opening (25) is provided with slot A (2402) on both sides, and a sealing strip A (2403) is provided inside the slot A (2402); the second-level long strip opening (31) is provided with slot B (3002) on both sides, and a sealing strip B (3003) is provided inside the slot B (3002).

6. A modular RV telescopic container according to claim 3, characterized in that, The first-level module kit (51) also includes a locking mechanism one (33), which is fixedly installed on the vehicle body floor plate; the second-level module kit (52) also includes a locking mechanism two (34), which is installed on the second-level lower component (57).

7. A modular RV telescopic container according to claim 3, characterized in that, A primary sealing device (35) is provided between the primary upper component (53) and the primary module kit (51), and a secondary sealing device (36) is provided between the secondary upper component (54) and the secondary module kit (52).

8. A modular RV telescopic body according to claim 3, characterized in that, The primary upper component (53) can be replaced with a primary split component (60), the secondary upper component (54) can be replaced with a secondary split component (61), and the split door (55) can be replaced with a molded door (62).

9. A modular RV telescopic body according to claim 4, characterized in that, The primary upper component (53) can also be replaced by a primary upper integrated module (65), and the secondary upper component (54) can also be replaced by a secondary upper integrated module (66); the primary module kit (51) can be replaced by a primary lower integrated component (63), and the secondary module kit (52) can be replaced by a secondary lower integrated component (64); the primary upper integrated module (65) and the primary lower integrated component (63) have concave and convex slots that match the T-shaped platform one (2401) and the T-shaped platform two (2404) and can be connected and used together; the secondary upper integrated module (66) and the secondary lower integrated component (64) have concave and convex slots that match the T-shaped platform three (3001) and the T-shaped platform four (3004) and can be connected and used together.

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