The original form of the window was taken from the slightly changed form of the door opening, which was used for lighting and for resisting outdoor harsh weather. There were plenty of materials for windows, from parchment to goatskin, horn flakes to linoleum - in fact, any translucent, light permeable material could be used for windows. In the 11th century, with the construction of Christian Church and the application of a large number of painted glass, the function of windows became decorative art to render the mysterious feeling of religion. Before the end of the 17th century, "lattice window" was restricted by glass production, and small pieces of glass were inlaid according to the outline of lattice fan. So the function of the window at this time is just to prevent the wind and rain and prevent the invasion of thieves. Until the late 17th century, with the progress of the times, the production of glass industrialization and the change of the relationship between man and nature. People realize that windows should also be purely functional - not just light, view, and shelter from the wind and rain. During this period, the British invented the vertical hinged window (i.e. casement window); the Dutch invented the hanging window (i.e., the upper and lower sliding window), which was controlled by a pulley device along the vertical direction. It marks the birth of "door and window hardware system".
The goal and function of hardware system in the development of aluminum alloy door and window system
With the continuous development of architectural form and functional requirements, the requirements for doors and windows curtain walls are higher and higher. In order to meet the requirements of buildings, the role of hardware system technology in the design of doors and windows also needs to be reconsidered. It seems very simple, but it is not. This requires careful planning, guidance and investment of a lot of energy and financial resources to achieve such a design purpose. The development and design of hardware system should have certain adaptability and flexibility. "Architectural factors" and "human factors" should be fully considered in the process of design and development. Its decoration, functionality, safety, convenience and comfort should meet the requirements of architectural design.
For the final goal of aluminum alloy door and window system development and design - a new door and window form, only when the designer has a complete and clear design concept, can a clear form of door and window be produced. Therefore, in order to achieve this goal, designers must trace their problems back to the original functional factors and find some patterns in them. Only when we understand the goal of the system and then we can develop it. Therefore, the system development of doors and windows and the selection or development of door and window hardware are closely linked and complementary. Just as Mr. Li Yi advocates, the quality of door and window, such as the flexibility and tightness of doors and windows, is not related to the performance of hardware and windows, but to the performance of door and window, such as vertical deformation and tightness.
Diversification of door and window hardware system
With the development of architectural design concept and the further development of window system technology and machinery and material industry, the category of building hardware has also developed from traditional simple form to functional and specific. Doors and windows will have more vitality. The connection between energy-saving system, lighting system, ventilation system and doors and windows will make the hardware have more accurate functional characteristics and good adaptability with the related systems of doors and windows. A variety of hardware systems emerge as the times require, such as the common forms in the current market: external side opening hardware, inner side opening and internal inverted hardware, middle hanging window hardware (vertical suspension), middle suspension window hardware (horizontal rotation), external hanging window hardware, push-pull hardware, outward sliding hardware, inward tilt smooth lateral moving hardware, electric hardware, intelligent electric hardware, folding and opening hardware, and lifting five Gold, ventilation devices, etc.