Centrifugal speed control door closing device

Abstract

The invention provides a centrifugal speed control door closing device. The centrifugal speed control door closing device comprises a first connecting rod hinged with a door body frame, a second connecting rod hinged with the end part of the first connecting rod, and a fixed frame, wherein the fixed frame is mounted on a door body, and consists of a copper column and three pieces of organic glass; the three pieces of organic glass are supported by the copper column to form two sandwich layers; the end part of the second connecting rod is fixedly connected with the end part of a shaft 1; the shaft 1 vertically penetrates through the two sandwich layers to be mounted among the three pieces of organic glass; a first gear and a torsion spring energy storage mechanism are mounted on the shaft 1; a shaft 2 is mounted in the lower sandwich layer; a second gear is mounted on the shaft 2; a rotating shaft is mounted among the three pieces of organic glass, and penetrates through the two sandwich layers; a third gear and a damping deceleration mechanism are mounted on the rotating shaft; and the second gear is synchronously engaged with the first gear and the third gear. The centrifugal speed control door closing device is convenient for installation and long in service life.

Description

technical field [0001] The invention relates to a door closing device, in particular to a centrifugal speed control door closing device. Background technique [0002] Door closing devices are a must in commercial and public buildings and have a huge market demand. Modern door closing devices usually adopt hydraulic methods, and related patents mainly include: "Hydraulic Door Closer" (Patent No.: CN201230493848.4), "Concealed Hydraulic Door Closer" (Patent No.: CN201120350247.8), "A Kind of Hydraulic door closer" (Patent No.: CN201020264969.7), etc. Hydraulic door closers need to use low-condensation hydraulic oil or engine oil when they are in use, and there will be oil leakage during the use of hydraulic door closers. Its pungent smell is very harmful to the human body, so the use of hydraulic door closers should be minimized. At the same time, the sealing ring in the hydraulic door closing device fails due to factors such as hydraulic structure and friction, which accoun...

AI Technical Summary

Problems solved by technology

Modern door closing devices usually adopt hydraulic methods, and related patents mainly include: "Hydraulic Door Closer" (Patent No.: CN201230493848.4), "Concealed Hydraulic Door Closer" (Patent No.: CN201120350247.8), "A Kind of Hydraulic door closer" (Patent No.: CN201020264969.7), etc. Hydraulic door closers need to use low-condensation hydraulic oil or engine oil when they are in use, and there will be oil leakage during the use of hydraulic door closers. Its irritating smell is very harmful to the human body, so the use of hydraulic door closers should be minimized

At the same time, the sealing ring in the hydraulic door closing device fails due to factors such as hydraulic structure and friction, which accounts for a very high proportion, making it impossible to control the closing speed. If it is used in the case of long-term failure, it is easy to cause damage to the door frame and door body.

[0003] Electronically controlled door closers can also be found in the literature, for example: "A Double-Control Hydraulic Door Closer" (Patent No.: CN201420290310.7), "Thermal Electric Double-Control Door Closer" (Patent No.: CN201230453473.9 ), "Temperature and Electric Dual-Control Door Closer Release for Fire Doors" (Patent No.: CN201220359794.7), etc., all of which have the commonality of requiring electricity, high environmental impact during installation, pre-wiring, and no mechanical hydraulic door closers Low carbon energy saving

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