1.
The wide-body light passenger project is a digitally-driven and meticulously planned endeavor. Throughout the entire project, the digital model seamlessly integrates shape and structure, utilizing accurate data, fast modifications, and smooth interface with structural design. This interactive process incorporates structural feasibility analysis at each stage, ultimately achieving the goal of a structurally feasible and aesthetically pleasing design, which is then released in data form. This article focuses on the examination of the CAS digital analog Checklist during the backdoor hinge opening process.
2. Rear door hinge axis arrangement
The key aspect of the opening motion analysis lies in the layout of the hinge axis and the determination of the hinge structure. As per the vehicle's specifications, the rear door needs to open 270 degrees. Considering the shape requirements, the outer surface of the hinge must align with the CAS surface, while ensuring that the hinge axis inclination angle is not too large.
The step-by-step analysis of the hinge axis layout is as follows:
a. Determine the Z-direction position of the lower hinge. This takes into account the space required for the arrangement of the reinforcement plate and considers factors such as strength, welding process size, and assembly process size.
b. Position the main section of the hinge based on the determined Z-direction position. Consider the installation process and determine the four-axis positions of the four-linkage through the main section, with parameterization of the four-link lengths.
c. Determine the four axes with reference to the inclination angle of the benchmark car's hinge axis. Use conic intersection to parameterize the values of the axis inclination and forward inclination.
d. Determine the position of the upper hinge based on the distance between the upper and lower hinges of the benchmark car. Parameterize the distance between the hinges and create normal planes for the hinge axes at the respective positions.
e. Detail the layout of the upper and lower hinge main sections on their respective normal planes. During the process, adjust the axis inclination angle to ensure alignment with the CAS surface. Consider hinge installation, manufacturability, fit clearance, and structural space of the four-bar linkage mechanism, without focusing on detailed hinge structure design.
f. Conduct DMU movement analysis using the determined axes to analyze the back door's movement and check for safety distances during opening. Generate a safety distance curve through the DMU module and determine if it meets the defined requirements for minimum safety distance.
g. Perform parametric adjustment by tweaking the hinge axis inclination angle, forward inclination angle, connecting rod length, and distance between the upper and lower hinges within a reasonable range. Analyze the feasibility of the rear door's opening process and limit position safety distance. Adjust the CAS surface if necessary.
The hinge axis layout requires multiple rounds of adjustments and checks to fully meet the requirements. It is crucial to note that any adjustments to the axis necessitate a complete readjustment of subsequent layout processes. Hence, the axis layout must undergo thorough analysis and calibration. Once the hinge axis is finalized, detailed hinge structure design can commence.
3. Rear door hinge design scheme
The rear door hinge employs a four-bar linkage mechanism. Due to significant shape adjustments compared to the benchmark car, the hinge structure requires substantial modifications. Adopting a recessed structure design poses challenges in forming the side wall structure. After considering several factors, three design options for the hinge structure are proposed.
3.1 Scheme 1
Design idea: Ensure alignment between the upper and lower hinges with the CAS surface. Make the hinge side consistent with the parting line. Hinge axis: Inward tilt of 1.55 degrees and forward tilt of 1.1 degrees.
Appearance disadvantages: Large difference between the hinge's closed and open positions, leading to misalignment with the door and side wall.
Appearance advantages: Flush outer surface of upper and lower hinges with the CAS surface.
Structural risks:
a. Significant adjustment to the hinge axis inclination angle, which may impact automatic door closing.
b. Longer inner and outer connecting rods of the hinge to maintain safe distance, potentially causing door sagging.
c. Divided side wall of the upper hinge could complicate welding process and result in potential water leakage.
d. Poor hinge installation process.
3.2 Scheme 2
Design idea: Protrude both upper and lower hinges outwards to eliminate gaps with the rear door in the X direction. Hinge axis: Inward tilt of 20 degrees and forward tilt of 1.5 degrees.
Appearance disadvantages: Increased outward protrusion of upper and lower hinges.
Appearance advantages: No fit gap between the hinge and the door in the X direction.
Structural risks: Slight adjustment to lower hinge size to ensure commonality with the upper hinge. Minimal associated risks.
Structural advantages:
a. Common four hinges, resulting in cost savings.
b. Good assembly process for door linkage.
3.3 Scheme 3
Design idea: Align outer surface of upper and lower hinges with the CAS surface, while matching the door link with the door. Hinge axis: Inward tilt of 1.0 degrees and forward tilt of 1.3 degrees.
Appearance advantages: Better alignment of hinge's outer surface with the CAS surface.
Appearance disadvantages: Large gap between the hinged door link and the outer link.
Structural risks:
a. Significant adjustment to the hinge structure, posing greater risk.
b. Poor hinge installation process.
3.4 Comparative analysis and confirmation of schemes
After discussions with the modeling engineer, considering structural and modeling factors, it is determined that the third solution is the optimal choice.
4. Summary
Hinge structure design necessitates comprehensive consideration of structure and shape, often posing challenges for optimization. With a forward-designed project, CAS design stage prioritizes structural requirements while striving to achieve maximum appearance modeling effect. The third design plan minimizes changes to the outer surface and maintains consistency in modeling effect. Therefore, the modeling designer leans toward this plan, taking into account our advanced production line and their confidence in the quality of our hinge products.

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Full extension drawer slides are a very practical home decoration item, which can effectively improve the efficiency of home use. However, when many people choose full extension drawer slides, they often face a problem, that is, how to choose full extension drawer slides with the correct length. This is not an easy problem, as choosing the wrong length can be inconvenient or even dangerous. Below, this article will introduce how to choose the correct length of full extension drawer slides to help you buy the right product.



First of all, we need to know what the length of the full extension drawer slides is. The length of full extension drawer slides refers to the actual length of the drawer slide rail, which includes the end installed on the wall or the inner wall of the wardrobe and the length of the slide rail protruding. Generally speaking, the length of full extension drawer slides has many specifications, ranging from 200mm to 1200mm, so you must choose according to the actual situation when choosing.





Secondly, what we need to know is the size and installation method of the full extension drawer slides. When choosing the length of full extension drawer slides, we also need to consider the size of the drawer and how it will be installed. The larger the drawer size, the longer the required full extension drawer slides. At the same time, when choosing the length of full extension drawer slides, we also need to consider the installation method, because some installation methods may affect the length selection of full extension drawer slides.



The biggest problem lies in the range of the length of the full extension drawer slides. If the length is selected to be large, it will be more difficult to install. If the length is selected to be small, the drawer will run off or have jamming, which will affect the use Experience, but also cause unnecessary damage.



In addition, when choosing the length of full extension drawer slides, we also need to consider the load-bearing capacity of the shelf. If the drawer is full of items, the pressure on the full extension drawer slides will be very high, so we need to choose full extension drawer slides with a greater load capacity. Generally speaking, the load capacity of full extension drawer slides will be described in detail in the product manual.



In addition to the above points, we also need to pay attention to the choice of brands and purchase channels. If you choose a brand with a good reputation, the quality will be relatively guaranteed. At the same time, when purchasing full extension drawer slides, we must also choose regular purchase channels, so as to avoid the emergence of fake and inferior products.



When choosing the correct length of full extension drawer slides, we need to consider factors such as the size of the drawer, installation method, load capacity, brand, and purchase channel. Only by comprehensively considering these factors can you choose the full extension drawer slides that suit you and improve the comfort and efficiency of home life.





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In today's era of pursuing sustainable development, environmental awareness has received widespread attention in various fields. Choosing environmentally friendly storage solutions is an important step in the home environment. In this regard, environmentally friendly metal drawer system are becoming an increasingly popular choice. This article will explore the advantages of being eco-friendly and why they are a sustainable storage solution.





As the drawer slides supplier, AOSITE has always adhered to the concept of sustainable development as its product production. Its slim double-wall drawer system became a hot product in the market as soon as it was launched.

Main material: galvanized steel plate

Maximum load capacity: 40kg

Slide rail thickness: 1.5*1.5*1.8mm

Function: Silent effect, built-in buffer device makes the drawer close softly and quietly

Specifications: 270/300/350/400/450/500/550mm



Part One: Advantages
Sustainable Materials: Often made from sustainable materials, such as recycled or renewable metals. The use of these materials helps reduce dependence on limited resources and lowers negative impact on the environment. In contrast, traditional drawers often use wood or plastic, and the production process of these materials can consume large amounts of energy and water.

LONG-TERM USE: Made of high-quality metal for excellent durability and sturdiness. They can withstand prolonged use and heavy loads and are not prone to damage or wear. This means that once purchased, you can use them for a long time, reducing the need to frequently change storage solutions.

It is usually made of high-quality metal materials, such as steel, aluminum alloy or stainless steel. These materials offer excellent strength and durability and are able to withstand prolonged use and heavy loads. In contrast, traditional drawers often use wood or plastic, which may be susceptible to wear or damage over time.

Its structural design is also an important factor in its durability. Solid welding or bolting methods are usually used to ensure a solid connection between various components to increase overall stability and load-bearing capacity without deformation or damage. This means you can place heavy items or stack other items on top of the metal drawer system without worrying about the stability of the structure.

Special coatings or treatments can protect it from moisture, moisture or chemicals. This makes the metal double-wall drawer system more durable in humid environments or locations that require frequent cleaning. In contrast, wooden drawers may become damaged due to humidity changes, insect infestation, or wear and tear, requiring more frequent repairs or replacements. And it can last for a long time under normal use conditions, reducing the cost and trouble of maintenance and replacement, and can protect the items you store in the drawer box from damage, loss, or theft.

Recyclable: When you no longer need to use them, they can be recycled and transformed into new metal products, reducing the need for raw materials. This helps reduce waste generation and promotes efficient use of resources. In contrast, wood drawers may become waste at the end of their useful life and cannot be recycled effectively.

During the Industrial Revolution, it began to be widely used and improved. As industrialization progressed, metal processing technology improved, allowing people to produce stronger and more precise ones.

By the beginning of the 20th century, with the development of science and technology and the advancement of production technology, design and function began to be constantly innovated. During this period, the use of steel became more common and the manufacturing process of metal double-wall drawer systems improved. People began to use stamping technology and welding technology for production, which reduced manufacturing costs and improved production efficiency.

As home lifestyles change and demand for functionality in furniture increases, design has improved. In the mid-20th century, people began to focus on practicality and maximizing storage space. Designers are beginning to use dividers, drawer dividers and adjustable drawer organization systems to make them more adaptable to the storage needs of different items.

As technology continues to advance, manufacturing processes and material selections have also been revolutionized. Usually made of high-strength steel or aluminum, they are lighter and more durable. Advanced manufacturing technologies, such as laser cutting, CNC machine tools and automated production lines, make the production of it more efficient and precise.

Save space: it usually has larger capacity and storage space. Due to the strength and stability of metal, they can be designed in deeper and wider sizes to maximize space. This allows you to better organize and sort items, reducing unnecessary wastage of space. In comparison, traditional drawers may have limited capacity and do not provide the same storage space.



Part 2: The significance of sustainable development
Resource Conservation: Use helps conserve limited natural resources. By using sustainable materials and recycling principles, the need for new materials is reduced and the pressure on forests and mineral resources is reduced. This helps maintain ecological balance and protect the sustainable development of the natural environment.

Reduced waste: The recycling nature helps reduce waste generation. Traditional drawers can become waste at the end of their useful life and are difficult to dispose of effectively. It can be recycled and reused, reducing the amount of waste and reducing the load on landfills.

Reduced energy and carbon emissions: The manufacturing process is generally more energy efficient and environmentally friendly than that of traditional drawers. The production process of metals may produce less carbon emissions. Compared with the processing of wood and the production of plastics, the use of metal materials can reduce the demand for fossil fuels and reduce greenhouse gas emissions.

The embodiment of a sustainable lifestyle: it represents concern for the environment and responsible use of resources. By making choices in your home environment, you can actively participate in sustainable practices and set an example for others, encouraging more people to take environmentally friendly actions.

It usually has a modern look that enhances the overall beauty and style of the furniture. The luster and texture of the metal material give the furniture a modern, sophisticated look that can match any style of home décor. It can also be decorated and personalized through different surface treatments, such as spraying, electroplating, or polishing. This makes it an important element in improving the appearance and quality of furniture.



Conclusion:
Eco-friendly it offers many advantages as a sustainable storage solution. Made from sustainable materials, they are long-lasting, recyclable, and space-saving. Choosing it not only helps protect the environment and resources but also reflects the importance of a sustainable lifestyle. Therefore, we should actively choose it and contribute to sustainable development.