Small hardware accessories, seemingly inconspicuous, are the soul of furniture. They play the role of connecting and fixing the parts and determine the service life of the furniture. There are many kinds of hardware accessories on the market, how can we choose high-quality and suitable hardware accessories? Let's take a look at the super practical guide for hardware selection.

Hinges can be said to be equivalent to human "bone joints". You must choose a high-quality hinge that can better fix the door and prevent the door from sagging or deforming.

When selecting, it is better to choose the ball bearing in the hinge intermediate shaft, which is smooth and no noise. In addition, it is recommended to choose pure copper or 304 stainless steel, which is not easy to rust and has a longer service life.

Hinges are widely used in door leaves and are indispensable accessories. They provide a buffer function when the door leaves are closed, reducing noise and friction. In the daily use of furniture, hinges have withstood the most tests! Therefore, the quality of the hinge is particularly important.

Currently, there are generally two types of hinge materials: cold rolled steel and stainless steel. Cold rolled steel is suitable for dry environments, such as cabinets and other places. Stainless steel is suitable for humid environments, such as bathrooms, balconies, kitchens, etc.

The door hinge is a device that allows the door to open and close naturally and smoothly.

The door hinge includes: A hinge base and a hinge body. One end of the hinge body is connected to the door frame through a mandrel and the other end is connected to the door leaf. The hinge body is divided into two sections, one is connected to the mandrel and the other is connected to the door leaf. The bodies are connected into a whole through a connecting plate, and a connecting gap adjustment hole is provided on the connecting plate. Because the hinge body is divided into two sections and connected into a whole through a connecting plate, the door leaf can be removed for repair by removing the connecting plate. The door gap gap adjustment holes of the connecting plate include: a long hole to adjust the gap between the upper and lower door gaps and a long hole to adjust the gap between the left and right door gaps. The hinge can be adjusted not only up and down, but also left and right.

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The wide-body light passenger project is a project that is driven by data and fully designed with a forward-thinking approach. Throughout the project, the digital model seamlessly connects the shape and structure, capitalizing on the benefits of accurate digital data, quick modifications, and seamless integration with structural design. It incorporates and interacts with the modeling design and progressively introduces structural feasibility analysis in stages, ultimately achieving the goal of structural feasibility and satisfactory modeling. The final result is directly released in the form of data. It is evident that the inspection of the appearance Checklist at each stage is of utmost importance. This article aims to delve into the details of the rear door hinge open check process.

2 Rear door hinge axis arrangement

The hinge axis layout and hinge structure determination are the focal points of the motion analysis of the rear door opening. According to the vehicle definition, the rear door needs to open 270 degrees. Considering the shape requirements, the outer surface of the hinge must align with the CAS surface, and the inclination angle of the hinge axis should not be too large.

The steps for analyzing the hinge axis layout are as follows:

a. Determine the Z-direction position of the lower hinge (refer to Figure 1). This decision primarily considers the space required for the arrangement of the reinforcement plate of the lower hinge of the rear door. This space needs to account for two factors: the size needed for ensuring strength and the size required for the welding process (mainly the welding tongs channel space) and the final assembly process (assembly space).

b. Position the main section of the hinge at the determined Z-direction position of the lower hinge. When positioning the section, the hinge installation process should be initially taken into consideration. Determine the positions of the four links through the main section, and parameterize the lengths of the four links (refer to Figure 2).

c. Based on the four determined axes in step 2, establish the four axes with reference to the benchmark car's hinge axis inclination angle. Use the conic intersection method to parameterize the values of the axis inclination and forward inclination (refer to Figure 3). Both the axis inclination and inclination must be independently parameterized for fine-tuning in subsequent steps.

d. Determine the position of the upper hinge by referencing the distance between the upper and lower hinges of the benchmark car. The distance between the upper and lower hinges must be parameterized, and the normal planes of the hinge axes are established at the positions of the upper and lower hinges (refer to Figure 4).

e. Meticulously arrange the main sections of the upper and lower hinges on the determined normal plane of the upper and lower hinges (refer to Figure 5). During the layout process, the inclination angle of the axis can be adjusted to ensure the outer surface of the upper hinge is flush with the CAS surface. Detailed consideration must also be given to the hinge's installation manufacturability, fit clearance, and structural space of the four-bar linkage mechanism (it is unnecessary to design the hinge structure in detail at this stage).

f. Conduct DMU movement analysis using the four determined axes to analyze the movement of the back door and verify the safety distance after opening. The safety distance curve during the opening process is generated through the DMU module of GATIA (refer to Figure 6). This safety distance curve determines whether the minimum safety distance during the rear door opening process meets the defined requirements.

g. Perform parametric adjustments by tuning the three sets of parameters: hinge axis inclination angle, forward inclination angle, connecting rod length, and distance between the upper and lower hinges (the parameter adjustments must be within a reasonable range). Analyze the feasibility of the rear door opening process (including safety distance during the opening process and at the limit position). If the rear door cannot open properly even after adjusting the three parameter groups, the CAS surface needs to be modified.

The hinge axis layout requires multiple rounds of iterative adjustments and checks to fully meet the requirements. It must be emphasized that the hinge axis is directly related to all subsequent layout processes. Once the axis is adjusted, the subsequent layout must be comprehensively readjusted. Therefore, the axis layout must undergo thorough analysis and precise layout calibration. After finalizing the hinge axis, the detailed hinge structure design phase begins.

3 Rear door hinge design options

The rear door hinge employs a four-bar linkage mechanism. Due to the significant adjustments in shape compared to the benchmark car, the hinge structure requires relatively large modifications. It is challenging to implement the recessed structure design when considering several factors. Therefore, three design options for the hinge structure are proposed.

3.1 Option 1

Design idea: Ensure that the upper and lower hinges align as closely as possible with the CAS surface and that the hinge side matches the part line. Hinge axis: Inward tilt of 1.55 degrees and forward tilt of 1.1 degrees (refer to Figure 7).

Appearance disadvantages: To ensure a safe distance between the door and the side wall during the door opening process, there is a significant difference between the hinge's matching position and the door's position when closed.

Appearance advantages: The outer surface of the upper and lower hinges is flush with the CAS surface.

Structural risks:

a. The inward tilt of the hinge axis (24 degrees inward and 9 degrees forward) is significantly adjusted compared to the benchmark car, and it may affect the effectiveness of automatic door closure.

b. To ensure a safe distance between the fully open rear door and the side wall, the inner and outer connecting rods of the hinge need to be 20nm longer than the benchmark car, which may cause the door to sag due to insufficient hinge strength.

c. The side wall of the upper hinge is divided into blocks, making welding difficult and posing a risk of water leakage in the later stages.

d. Poor hinge installation process.

3.2 Option 2

Design idea: Both the upper and lower hinges protrude outwards to ensure no gap between the hinges and the rear door in the X direction. Hinge axis: 20 degrees inward and 1.5 degrees forward (refer to Figure 8).

Appearance disadvantages: The upper and lower hinges protrude more outwardly.

Appearance advantages: No fit gap between the hinge and the door in the X direction.

Structural risk: To ensure commonality between the upper and lower hinges, the size of the lower hinge is slightly adjusted compared to the benchmark car sample, but the risk is minimal.

Structural advantages:

a. All four hinges are common, resulting in cost savings.

b. Good door linkage assembly process.

3.3 Option 3

Design idea: Match the outer surface of the upper and lower hinges with the CAS surface and match the door linkage with the door. Hinge axis: 1.0 degrees inward and 1.3 degrees forward (refer to Figure 9).

Appearance advantages: The outer surface of the hinge fits better with the outer surface of the CAS surface.

Appearance disadvantages: There is a significant gap between the hinged door linkage and the outer linkage.

Structural risks:

a. The hinge structure undergoes significant adjustments, posing a greater risk.

b. Poor hinge installation process.

3.4 Comparative analysis and confirmation of options

The three hinge structure design options and a comparative analysis with the benchmark vehicles are summarized in Table 1. After discussions with the modeling engineer and considering structural and modeling factors, it is confirmed that the "third option" is the optimal solution.

4 Summary

The design of the hinge structure necessitates the comprehensive consideration of factors such as structure and shape, often making it challenging to optimize all aspects. As the project predominantly adopts a forward design approach, during the CAS design stage, meeting structural requirements while maximizing the appearance modeling effect is of utmost importance. The third option strives to minimize changes to the outer surface, ensuring modeling consistency. Therefore, the modeling designer leans towards this option. The quality of AOSITE Hardware's Metal Drawer System is highly affirmed, demonstrating the effectiveness of their management system.

When it comes to purchasing wooden doors, hinges are often overlooked. However, hinges are actually crucial components for the proper functioning of wooden doors. The convenience of using a set of wooden door switches depends mainly on the quality of the hinges used.

There are generally two types of hinges for household wooden doors: flat hinges and letter hinges. For wooden doors, flat hinges are more important. It is recommended to choose a flat hinge with a ball bearing (small knot in the middle of the shaft) as it helps reduce friction at the joint of the two hinges. This ensures that the wooden door opens smoothly without squeaking or rattling. It is not advisable to choose "children and mothers" hinges for wooden doors as they are relatively weak and designed for use on light doors such as PVC doors. Furthermore, they reduce the number of steps required to make grooves in the door.

When it comes to hinge material and appearance, stainless steel, copper, and stainless iron/iron are commonly used. For household use, it is recommended to opt for 304# stainless steel as it ensures the longevity of the door. It is not advisable to choose cheaper options such as 202# "immortal iron" as they rust easily. Finding someone to replace the hinge can be expensive and troublesome. It is also important to use matching stainless steel screws for the hinges, as other screws may not be suitable. Pure copper hinges are suitable for luxurious original wooden doors but may not be suitable for general household use due to their high price.

In terms of specifications and quantity, the hinge specification refers to the size of length x width x thickness after the hinge is opened. The length and width are typically measured in inches, while the thickness is measured in millimeters. For household wooden doors, hinges that are 4" or 100mm long are generally suitable. The width of the hinge should be based on the thickness of the door, and a door with a thickness of 40mm should be equipped with a 3" or 75mm wide hinge. The thickness of the hinge should be chosen based on the weight of the door, with lighter doors requiring a 2.5mm thick hinge and solid doors requiring a 3mm thick hinge.

It is important to note that while the length and width of hinges may not be standardized, the thickness of the hinge is crucial. It should be thick enough (>3mm) to ensure the strength and quality of the hinge. It is recommended to measure the hinge thickness with a caliper. Light doors can use two hinges, while heavy wooden doors should have three hinges to maintain stability and reduce deformation.

The installation of hinges on wooden doors usually involves using two hinges. However, it is easy to install three hinges, with one hinge in the middle and one on the top. This German-style installation provides stability and allows the door frame to better support the door leaf. Another option is an American-style installation, which involves evenly distributing the hinges for a more aesthetically pleasing look. This method also helps to restrict door deformation.

At AOSITE Hardware, we are committed to offering exquisite products and providing the best customer service. We believe in showcasing both our hard and soft power, demonstrating our comprehensive capabilities. Our brand remains the number one choice for consumers worldwide, and our products have obtained numerous certifications. We guarantee that customers will have a satisfactory experience with our products.

Kitchen handles and finishes are a very important part of kitchen furniture. They not only play a role in beautifying the kitchen space, but also are the key to improving the practicality and ease of use of the kitchen. Handles and finishes are one of the main considerations when it comes to the quality and appearance of kitchen furniture. There are many types of kitchen handles and finishes, each with its own unique features and benefits, as well as different design styles and themes. Below, we’ll take a closer look at the different types of kitchen handles and finishes.

Kitchen cabinet handles:

1. Pull handle: This handle is a traditional design that allows you to easily open and close cabinet doors in the kitchen. Not only that, pull handles can also create a set of highlights on the cabinet doors, making the entire kitchen look more beautiful. There are also many types of handles, including U-shaped, L-shaped, C-shaped, S-shaped and other shapes to meet different kitchen furniture design requirements.

2. Bottom back panel handle: This kind of handle can not only improve the aesthetics of the kitchen, but also increase the comfort of using the cabinet door. Compared with traditional handles, the bottom back panel handle has the advantage of being more comfortable to use. It does not have a protruding handle, which can avoid collision damage when opening the cabinet door. At the same time, this kind of handle can also easily achieve a simple design effect and increase the feeling of space.

3. Magnet handle: This kind of handle is the latest design on the store. It allows the handle to be completely hidden on the cabinet door, making the cabinet door neater and more beautiful. The magnetic handle is also very convenient: just pull the door slightly to open it completely.

Kitchen cabinet finishes:

1. Color matching finishes: Color matching finishes are mainly coordinated with the color tone of the kitchen. When selecting, you need to consider the complementarity of colors to ensure the overall feel of the colors. When using, it is also necessary to ensure the rationality of the layout to increase the sense of spatial hierarchy.

2. Deformation and collage veneer: This type of veneer usually uses the inlay of different materials, which can not only create a beautiful effect, but also create a new visual effect in the kitchen space. In practice, you can also try collage on white walls to increase the three-dimensional sense of the space.

3. Stainless steel kitchen cabinet finishes: The benefit of stainless steel finishes is that they resist smoke stains and texture scratches while also being moisture and oxidation-resistant. This material can also be paired with natural wood or ceramic materials to give the kitchen a more modern feel.

Kitchen cabinet handle material refers to the material used for the handles or handles of kitchen cabinet doors or drawers. They are inseparable from the overall design temperament and functionality of the kitchen cabinet. The choice of handle material not only affects the visual effect of the entire kitchen, but also brings different experiences to handling ingredients, cooking, cleaning and maintenance. The following will give a detailed introduction to several common handle materials.

1. Metal handle

Metal handles are the most common because they are simple in design and easy to install and clean. Commonly used metal materials include stainless steel, chromium, aluminum and copper. They are as strong as steel, can withstand large tensile forces and heavy pressures, and are not easy to wear and deform. The surfaces of these metals can also be specially treated to give them different colors and textures, thereby enhancing the sensory beauty of the overall kitchen design. However, it should be noted that if it is exposed to water and steam for a long time, rust will occur. It is recommended to use a special material cleaner for cleaning.

2. Polymer material handle

The polymer material is a new type of environmentally friendly material. In order to better meet the needs of the market, it has also begun to be used in the design of kitchen cabinet handles. The advantage of this material is that it resists corrosion and UV exposure very well and does not discolor and age easily. At the same time, the production cost of polymer materials is low, and they can be produced in different shapes and colors to facilitate personalized design and creation. However, the hardness of polymer materials is generally low, so be careful when using them to avoid damage caused by excessive force.

3. Ceramic handle

Ceramic handles have also been favored by kitchen design masters in recent years. Its main advantage is that it is very decorative and beautiful, and can enhance the design and texture of kitchen cabinets. At the same time, the surface of ceramics is smooth, making it easier to clean. In addition, the quality of ceramic handles is usually very stable and will not deform or prematurely wear due to environmental influences. The only thing you need to pay attention to is that because the ceramic material cannot withstand too much impact, you need to be careful when using it.

4. Wood handles

Wood is also one of the commonly used handle materials. The texture and warmth of wood lends itself well to kitchen design, and it is often used to create kitchen cabinets with a natural style. In addition, wood handles are easy to make and can be DIYed according to personal preferences, or painted in different colors and coatings to better match the overall style of the kitchen. However, due to the characteristics of wood, it requires regular maintenance and moisture protection to prevent warping and deformation.

All in all, there are many types of kitchen handles and finishes, each with its own unique features and benefits. When choosing kitchen handles and finishes, you need to choose them based on your preferences and needs, combined with the overall design of the kitchen. Size, shape and color all need to be chosen carefully to achieve the perfect kitchen effect. I believe that in this project, choosing the right handles and finishes at the right cost will definitely make your kitchen more beautiful and functional!