A high-strength, modular and torsion-resistant frame for a motor home

Abstract

The utility model discloses a high strength, modularization, strong torsional rigidity's frame of motor caravan belongs to motor caravan frame field. Including basic frame, the basic frame includes crossbeam and stringer, the upper end welding of stringer has a plurality of small steel pipes, this motor caravan frame is composed of high strength steel, is divided into crossbeam and stringer and forms basic frame. Crossbeam support floor plane dispersion stress point, and stringer is divided into left and right high strength steel pipe, and is welded with crossbeam, strengthens the strength of whole frame. Frame modularization sectional design is carried out according to the inherent function structure of motor caravan and is partitioned, and specifically has battery cabin, fresh water tank hanger, grey water tank hanger, tire active area, step box, storage box, gas cylinder cabin etc.

Description

Technical Field

[0001] This utility model relates to a motorhome frame, and more particularly to a high-strength, modular, and torsional-resistant motorhome frame. Background Technology

[0002] With the rapid changes in people's lifestyles, the demands for recreational vehicles (RVs) are increasing. Due to years of market competition, RV products have gradually matured and become more differentiated. For companies, the key is to create innovative designs for self-driving RVs to achieve innovation in functionality and practicality. This involves continuous improvement based on user habits and design shortcomings. For example, the frame design of existing RVs on the market has the following deficiencies: 1. Weak functional zoning and a lack of modularity. 2. Insufficient frame standardization; welding points in later models did not achieve uniformity before further modifications. 3. Insufficient separation between cabin space utilization and structural space utilization; the so-called separation of hard and soft furnishings. Utility Model Content

[0003] Purpose of the utility model: The purpose of this utility model is to provide a high-strength, modular, and torsional-resistant frame for motorhomes, in order to solve the problems of functional zoning, standardization, strength, and stability of connection with the vehicle body in the existing motorhome frame structure mentioned in the background art.

[0004] Technical solution: A high-strength, modular, and torsional-resistant frame for a self-propelled motorhome, comprising a basic frame, wherein the basic frame includes crossbeams and longitudinal beams, and several small steel pipes are welded to the upper end of the longitudinal beams.

[0005] Furthermore, the basic frame is fixedly connected by welding to the fresh water tank hanger, grey water tank hanger, battery box, step box, mudguard bracket, tire movement area, storage box and gas cylinder compartment.

[0006] Furthermore, the longitudinal beams are equipped with caster wheel mounting brackets welded to both the front and rear ends.

[0007] Beneficial Effects: The frame of this motorhome is constructed of high-strength steel, consisting of crossbeams and longitudinal beams forming the basic framework. The crossbeams support the floor plane, distributing stress points, while the longitudinal beams are composed of left and right high-strength steel pipes welded to the crossbeams to enhance the overall frame strength. The frame features a modular, segmented design, divided according to the inherent functional structure of a motorhome, including a battery compartment, fresh water tank hanger, grey water tank hanger, tire movement area, step box, storage box, and gas cylinder compartment. Mudguard brackets are welded to the rear of the tires. To ensure crossbeam strength and distribute stress points, several small steel pipes are welded to the upper ends of the longitudinal beams corresponding to the fresh water and grey water tank installation areas. Additionally, a water tank hanger is provided to ensure stability during travel and facilitates water tank access. Unlike other bicycle frames, this design reduces the use of space above the floor, increasing the utilization of interior space. Caster wheel mounting brackets are welded to the front and rear ends of the frame, ensuring stability during transport and movement of the vehicle before the frame is installed on the motorhome chassis. The battery compartment of the frame has a fixed limiting device to facilitate disassembly and installation by maintenance personnel, and also provides space for users to add more batteries later. Meanwhile, the pre-drilled holes on the welded bent parts of the frame allow for bolt connection to the motorhome chassis, and also enable quick disassembly. The frame adopts a modular design concept, providing a standard modular structure for future models, ensuring that the hole data for later installations will not deviate significantly.

[0008] This invention features a high-strength, modular, and torsional-resistant frame for a self-propelled motorhome. The strength and stress distribution between the crossbeams and longitudinal beams are more even. By calculating the weight of each structural area—specifically the battery, fresh water tank, grey water tank, storage compartment, and gas cylinder compartment—located at both ends of the frame, this design provides a standard reference for subsequent frame balancing. Furthermore, redundant structural components within the vehicle compartment are transferred to the frame, improving space utilization. The design incorporates caster wheel mounting brackets welded to the front and rear ends of the longitudinal beams of the basic frame. Before the frame is installed onto the motorhome chassis, the casters ensure the stability of the vehicle compartment during normal transport and movement. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0010] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0011] Figure 3 This is a schematic diagram of the bottom structure of this utility model.

[0012] In the diagram: 1. Basic frame; 2. Crossbeam; 3. Longitudinal beam; 4. Small steel pipe; 5. Fresh water tank hanger; 6. Grey water tank hanger; 7. Battery box; 8. Step box; 9. Mudguard bracket; 10. Tire movement area; 11. Storage box; 12. Caster wheel mounting bracket; 13. Gas cylinder compartment. Detailed Implementation

[0013] To make the technical solution of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. Example

[0014] like Figures 1-3 As shown, a high-strength, modular, and torsional-resistant frame for a self-propelled motorhome is provided, including a base frame 1. The base frame 1 includes a crossbeam 2 and a longitudinal beam 3. Several small steel pipes 4 are welded to the upper end of the longitudinal beam 3. The base frame 1 is fixedly connected by welding to a fresh water tank hanger 5, a grey water tank hanger 6, a battery box 7, a step box 8, a mudguard bracket 9, a tire movement area 10, a storage box 11, and a gas cylinder compartment 13. Universal wheel mounting brackets 12 are welded to both the front and rear ends of the longitudinal beam 3.

[0015] The basic frame 1 has crossbeams 2 and longitudinal beams 3 at its upper and lower ends, with reinforcing steel pipes 4 welded between them. This strengthens the overall frame, distributes stress evenly, and improves vehicle stability and driving feel. Various structural functional areas are welded inside the basic frame 1. Fresh water tank hangers 5 and grey water tank hangers 6 are located at the front and rear ends, facilitating user access to the water tanks. Compared to traditional water tank frames, this design places the grey water tanks at the bottom of the frame, improving cargo space utilization. Battery boxes 7, step boxes 8, mudguard brackets 9, tire movement areas 10, and storage boxes 11 are welded to other locations. The distribution of these major structural areas can be calculated and rationally arranged to achieve overall frame weight balance, providing a standard reference for future frame balancing. Battery boxes 7 have some redundancy to accommodate new batteries, providing space for future battery upgrades. The frame adopts a modular design concept, clearly separating various functional structural zones. The rational planning of each area also provides a degree of standardization for future models. It also effectively separates the hard and soft components of the vehicle body.

[0016] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A high-strength, modular, and torsional-resistant frame for a self-propelled motorhome, comprising a basic frame (1), characterized in that: The basic frame (1) includes a crossbeam (2) and a longitudinal beam (3), and several small steel pipes (4) are welded to the upper end of the longitudinal beam (3).

2. The high-strength, modular, and torsional-resistant frame for a self-propelled motorhome according to claim 1, characterized in that: The basic frame (1) is fixedly connected by welding to the fresh water tank hanger (5), the grey water tank hanger (6), the battery box (7), the step box (8), the mudguard bracket (9), the tire movement area (10), the storage box (11), and the gas cylinder compartment (13).

3. The high-strength, modular, and torsional-resistant frame for a self-propelled motorhome according to claim 2, characterized in that: The longitudinal beam (3) is welded with caster wheel mounting brackets (12) at both the front and rear ends.

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