Aluminium frame auminum alloy folding chair is widely used in modern life. Its frame structure design needs to cleverly balance the two key factors of strength and portability.
First of all, in terms of material selection, it is crucial to use the right type of aluminium alloy. Aluminium alloys with a high strength-to-weight ratio, such as 6061 or 7075 aluminium alloys, can provide sufficient rigidity and load-bearing capacity while maintaining a relatively light weight. These aluminium alloys optimize their internal crystal structure through the reasonable proportion of alloying elements, enhance their anti-deformation ability, and lay the foundation for the strength of the frame.
In terms of the overall shape design of the frame, tubular structures are mostly used. The design of round or rectangular tubes can evenly disperse the force, effectively avoiding structural damage caused by stress concentration when bearing the weight of the human body and various external forces in use. For example, the tubular design of the chair leg can well support the weight in the vertical direction, while the crossbeam part adopts a reasonable pipe diameter and connection method to enhance the stability of the entire frame.
The connection part is one of the key points of the design. When welding, riveting or special connectors are used for connection, it is necessary to ensure that the strength of the connection point is not lower than the pipe itself. For example, the precision welding process can make the connection part form a solid whole, and the strength of the weld is strictly tested and optimized to ensure that it will not crack when subjected to large shear and tensile forces. At the same time, for some detachable connection structures, such as hinge connections at folding parts, compact structures are designed to reduce additional weight and volume while ensuring reliable connections.
In order to achieve portability, the frame is designed with a clever folding mechanism. Special folding hinges are used at the connection parts of the chair such as the backrest and seat plate, and the seat plate and the chair legs. These hinges allow the chair to fold in a specific direction, and the components can fit tightly during the folding process. For example, by designing a reasonable folding angle and a limit device, the chair can be folded into a flat or compact shape, which is convenient for storage and carrying, and can be quickly locked in a stable structural state when unfolded for use.
In addition, the internal structural design of the frame may also adopt reinforcement ribs or local thickening. In places with greater stress, such as the frame beam under the seat plate, adding reinforcement ribs can greatly improve strength without significantly increasing weight. In some non-critical parts, the structure is appropriately optimized to reduce the use of materials and further reduce the overall weight. Through these comprehensive design methods, the frame structure of the aluminum frame auminum alloy folding chair can achieve an ideal balance between strength and portability, meeting people's usage needs in different scenarios.
