Central control bolt

Abstract

The invention belongs to the technical field of bolts, and particularly relates to a center control bolt which comprises a shell, a panel is arranged on the side edge of the shell, a heaven and earth hook pull rod is arranged in the shell in a sliding mode, a notch is formed in the panel, a turning handle used for driving the heaven and earth hook pull rod to move is arranged in the notch, and a driving gear is rotationally arranged on the shell. A first rack part matched with the driving gear is arranged on the heaven and earth hook pull rod, a transmission assembly and a first elastic piece are arranged in the shell, a driving part is arranged on the turning handle, the transmission assembly comprises a transmission gear, the transmission gear is rotationally arranged on the shell, and a driving protrusion is arranged on the transmission gear; a driving groove matched with the driving bulge is formed in the driving gear; a locking piece and a second elastic piece are further arranged on the shell, a clamping groove is formed in the heaven and earth hook pull rod, and the second elastic piece drives the locking piece to be matched with the clamping groove and enables the heaven and earth hook pull rod and the shell to be relatively fixed.

Description

technical field [0001] The invention belongs to the technical field of bolts, in particular to a central control bolt. Background technique [0002] The central control latch is the control device for the upper and lower latches in the security door. By swinging the flip handle in the central control latch, the upper latch or the lower latch can retract / extend the security door. In order to stably connect the upper latch or the lower latch with the door frame, many central control latches are provided with elastic members that drive the upper latch or the lower latch to protrude from the anti-theft door. Although this structure can make the anti-theft door more secure, it is unavoidable. It will lead to the phenomenon that the upper latch or the lower latch is accidentally ejected from the anti-theft door. When the anti-theft door's lower latch is not pulled back into the anti-theft door and the anti-theft door is turned, the latch will collide with the door frame, and even...

AI Technical Summary

Problems solved by technology

In order to stably connect the upper bolt or the lower bolt to the door frame, many central control bolts are provided with an elastic member that drives the upper bolt or the lower bolt to protrude from the security door. Although this structure can make the security door safer, it is inevitable It will cause the upper bolt or the lower bolt to pop out of the anti-theft door accidentally. When the lower bolt of the anti-theft door is not pulled back into the anti-theft door and the anti-theft door is turned, the bolt will hit the door frame, and even the longer lower bolt will Collision / scratching the ground, affecting the appearance of the door frame and the ground

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