Piezas de herrajes para ventana, pestillo de cierre

cierra puertas:

Un aparato que puede cerrar o fijar automáticamente una hoja de puerta abierta en una posición determinada. Algunos tienen la función de bisagras, y algunos tienen resistencia al fuego. Las variedades principales son resortes de piso, resortes superiores de puertas, tirachinas de puertas, topes de puertas, abrazaderas de puertas, boquillas magnéticas de puertas, etc.

① Floor spring: also known as earth dragon. Installed in the lower part of the doors and windows. It is made of gray cast iron, carbon steel, spring steel, cast steel, etc., processed into parts and assembled.

②Door top spring: an automatic door closing device that uses the elastic force of a clockwork spring or a spiral spring to close the door leaf. A buffer cylinder is installed inside to reduce the door closing speed.

③Door slingshot: It is punched out of low-carbon strip steel, and is equipped with low-carbon cold-drawn steel ejector rods to close the door by elastic force.

④Door stopper: a simple positioner that brakes the door leaf and prevents the door leaf from colliding with the wall. Installed on the outer lower corner of the door leaf, the door leaf can be positioned at any angle.

⑤Door chuck: An appliance that fixes the door leaf. It is composed of a knife-edge base and a triangular steel leather chuck. There are two types: horizontal and vertical. The base is made of gray cast iron; the chuck is made of spring steel, and the surface is blued.

⑥Magnetic door suction head: The function is the same as the door clip door and window hardware head, the door leaf is fixed by the suction of the permanent magnet, and there is no noise during use.

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