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Device for reducing locking resistance of door leaf of civil defense door

InactiveCN106088814AReduced lock-upReduced locking resistanceBuilding locksSealing arrangementsRolling resistanceSteel ball
The invention discloses a device for reducing the locking resistance of a door leaf of a civil defense door. The device comprises the door leaf (1), a lock seat (2) connected to the door leaf (1), a lock head (3) connected with a locking connecting rod mechanism and conducting the stretching and contacting movement in a hole of the lock seat (2), and a door frame (4). A lock groove (41) is formed in the door frame (4), a slope (31) is arranged on the stretching-out part of the lock head (3), and the slope (31) and the locking edge of the lock groove (41) generate the sliding friction movement. The device is characterized in that the locking edge of the lock groove (41) is fixedly connected with a first clamping seat (5) or a second clamping seat (7), a steel ball (51) is arranged on the first clamping seat (5) or a roller (71) is arranged on the second clamping seat (7), and the slope (31) stretches out to generate the rolling friction movement with the steel ball (51) or the roller (71). According to the device, the locking force of the door leaf is improved under the same operation force condition or the operation force is reduced under the same locking force condition, and the device is used for greatly lowering the labor intensity of manual locking operation especially for locking of large heavy-load civil defense doors.
Owner:贵州瑞安达人防设备有限公司
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