Safety Knob Mechanism

Abstract

The invention discloses a safety knob mechanism. In this safety knob mechanism, the swing phase stroke of the limit swing arm of the knob installation cylinder can be constrained to stagnate in a steady state alternatively between the first limit phase and the second limit phase, and the knob push plate passes through the safety knob The screwing phase stroke is interrelated with the swing phase stroke of the limit swing arm, so that any one of the first limit phase and the second limit phase can be used to form a limit position constraint on the first screwing phase or the second screwing phase, and then Over-rotation of the safety knob and stagnation at the transition position can be avoided. Moreover, when the safety knob mechanism is installed, the phase switchable cooperation between the knob push plate and the knob installation cylinder can adjust the limit position constraint relationship to adapt to doors with different opening and closing side orientations and different lock hole orientations; when using the installation safety knob mechanism At this time, the phase switchable cooperation between the knob push plate and the knob installation cylinder can realize the screwing in the way of safety locking.

Description

Technical field [0001] The present invention relates to the field of security, and more particularly to an insurance knob mechanism suitable for the door lock. Background technique [0002] The door lock can be equipped with an insurance knob mechanism for insisting of the main lock of the latching state. [0003] However, the drive of the insurance knob mechanism lacks constraints to the insurance enable and insurance to release these two spinning limit. [0004] On the one hand, such constraints are missing to generate an overwheloid of the knob, distort the transmission between the knob and the fuse lock; on the other hand, such constraints are easy to stagnate the knob in two swirl Limits The transition position between the transitionation, when the external force hits, the knob in the transitional position may not be controlled randomly transform to the pinning limit position of the insurance enabled, so that the insurance misleading is easily enabled. [0005] Additionally,...

AI Technical Summary

Problems solved by technology

[0003] However, the safety knob mechanism of the transmission lacks the constraints on the two screw limit positions of safety activation and safety release

[0004] On the one hand, such a lack of restraint tends to cause over-rotation of the knob, which distorts the transmission member connected between the knob and the safety lock hole; on the other hand, such a lack of restraint tends to cause the knob to stagnate at two extreme positions of rotation The transition position between them, when subjected to external impact, the knob in the transition position may be uncontrolled and randomly changed to the screw limit position of the insurance activation, which is prone to accidental activation of the insurance

[0005] In addition, the traditional safety knob mechanism often only supports a single door opening and closing direction and the direction of the safety tongue lock hole, which is not universal

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