Moment arm structure for door closer and fireproof door driving structure
A technology of driving structure and door closer, which is applied in the direction of power control mechanism, wing leaf control mechanism, door/window accessories, etc. It can solve the problems of difficult punching, damage of connecting arm, high scrap rate, etc., and achieves easy installation and improved durability sexual effect
Active Publication Date: 2017-10-24
GUANGZHOU YUCHENG FIRE TECH
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Problems solved by technology
If the inclination angle is small, the connecting arm 103 is longer, and it is easier to hit the door frame below the hydraulic device, causing damage to the door frame, and the force generated by the impact can easily cause the front end of the hydraulic device connection end 102 to be shattered. Cause damage to the connecting arm 103; and the connecting arm 103 with a larger inclination angle is shorter, although it can prevent the upper end of the door frame from being hit, but it is difficult to punch and the scrap rate is high, which in turn increases the cost
Method used
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[0038] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the protection scope of the present invention.
[0039] see figure 1 A preferred embodiment of the present invention provides a fire door driving structure, including a force arm structure 1, a door closer 2 and a hydraulic device 3, and the two ends of the force arm structure 1 are respectively hinged to the door closer 2 and the hydraulic device 3, The hydraulic device 3 provides a driving force to act on the arm structure 1 , so that the end of the arm structure 1 hinged on the door closer 2 maintains a tendency to move toward the closing direction of the door closer 2 . Usually, the hydraulic device 3 is installed on the body of wall above the door frame, and the door closer 2 is ...
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The invention discloses a moment arm structure for a door closer. The moment arm structure comprises a moment arm body and a hydraulic press connector detachably connected to one end of the moment arm body. The hydraulic press connector is perpendicularly arranged at one end of the moment arm body. One end of the moment arm body is provided with a through hole used for being connected with the door closer, and the other end of the moment arm body is provided with a connecting hole used for installing the hydraulic press connector. The hydraulic press connector comprises a connecting hole connecting end, and a hydraulic press connecting end arranged at one end of the connecting hole connecting end. The connecting hole connecting end is installed in the connecting hole in the moment arm body. An installation hole is formed in the end face of the hydraulic press connecting end. The hydraulic press connector is connected with a hydraulic press through the installation hole. According to the moment arm structure, the hydraulic press connector is detachably connected to one end of the moment arm body, installation of the moment arm structure is facilitated, in addition, when a fireproof door rotates relative to a door frame, the moment arm structure can be prevented from impacting a door frame, and the durability of the moment arm structure and the durability of the fireproof door are improved.
Description
technical field [0001] The invention relates to the technical field of fire-fighting equipment, in particular to a force arm structure used for a door closer and a fire-proof door driving structure for a fire-fighting passage. Background technique [0002] In order to improve fire safety, densely populated buildings such as office buildings and residential buildings are generally equipped with fire exits to serve as rescue and evacuation channels for trapped people when a fire breaks out. All fire exits are equipped with fire door structures. The main function of fire doors is to prevent thick smoke from entering the fire exits by closing the fire doors after a fire breaks out. The common fire door structure includes a hydraulic device, a door closer and a force arm connecting the hydraulic device and the door closer. The hydraulic device is installed on the wall on the door frame, and the door closer is installed on the fire door. The two ends of the force arm are respectiv...
Claims
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IPC IPC(8): E05F15/53E05F15/72
CPCE05F15/53E05F15/72E05Y2900/134
Inventor 董宏利
Owner GUANGZHOU YUCHENG FIRE TECH