Door industry hardware fittings installation and fixing
Door industry hardware fittings installation and fixing
Hardware fittings are the key spare parts of the structure of plastic doors and Windows, stand or fall directly related to plastic doors and Windows performance and life. When designing and choosing hardware fittings, must have to be able to accept sash self-weight and open frequent function, consider safe and firm even at the same time, beautiful, corrosion-resistant, ensure the sealing performance when sash closes. The structure of hardware fittings should suit the structure of plastic window and open means. Plastic window application is the most extensive way to open the casement window and sliding window, a few for the next hanging window. All the flat open, turn over, rise and fall and push and pull Windows are made use of different forms of hardware accessories to achieve
Hardware fittings of the device location and quantity
Hinge: the number of plastic window hinges should be based on the size of the window sash, the opening of the window sash (inside, outside) glass thickness and layer number, the wind situation of the window use area, building height to determine the number of each used window hinges.
Number of holding hands and joint holding hands. The handle is generally installed in the middle of the window sash, about 1.5m from the ground. When the sash height <800mm fashion a handle; When the sash height is >800mm, two handles must be installed, located at 1/4 of the upper and lower ends of the sash. However, the problem brought by the installation of two handleholders is that when the window device is in a higher position or a large sash, the short person can not reach the upper handleholder. Therefore, the linkage handleholder should be adopted to achieve multi-point locking.
3 the position of the fixed window device (also known as window support) should be able to make the window sash opening Angle greater than 90° and the window opening Angle greater than 60°
4 push-pull window lock hand is recommended to be installed in the height of the push-pull fan at the midpoint.
5. The pulley of the sliding window shall be installed below the 100mm glass cushion block at the corner.) At least two pulleys shall be provided for each window sash.
The fixation of hardware fittings
The fixation of plastic window hardware fittings is different from wooden window, because wooden window is solid profile, hardware fittings is fixed with wooden screw, its riveting and solid force is higher. Plastic window is the wall thickness of 23mm cavity profiles, the use of general wood screws will not be necessary to use self-tapping screws or pull rivets. Hardware fittings of bearing (hinge, support, etc.) in principle hardware http://www.zx028.com/shigong/17535.html parts need to be fixed on the pull out the enhancement of lining steel pieces. Not enhance parts, screws must be at least two layers of wall thickness through the plastic material, one reason is that the screw fixed hinge are under the function of two kinds of force, the second reason is the screw and profile connection strength is affected by temperature, hinge fixed stress distribution is a horizontal pulling power, the other is a vertical shear force. The experimental results show that the shear stress of plastic profile is greater than that of pull-out stress. Therefore, the binding force or pulling strength of the screw is usually used as the riveting procedure of the screw. The higher the pull-out strength of the screw, the pull-out strength of the screw fixed on the profile stiffening bar is about 3 times higher than that of the profile without the reinforcement bar. For bearing small hardware accessories, can consider not to add reinforcement, this is due to the profile wall of the screw to form a balance torque, so as to effectively prevent the screw and profile joints by shear force damage, improve the pullout strength accordingly