Double Swing Door Locking Device with Pivot Bolt
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Solution Overview
Problem
Existing double swing door locking devices often fail to securely lock the doors, as door handles can change position unintentionally, leading to the doors swinging open, particularly in double swing configurations, where additional moving elements are not used to simplify the mechanism.
Innovation Solution
A double swing door locking device featuring door handles with base and handle bodies, including recesses for a pivotally held bolt that can be locked in a horizontal position, with integrated mechanisms to pivot the bolt from a locking to an unlocking position, utilizing blocking means that engage in parallel recesses to prevent swinging, ensuring secure locking and easy operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a simple door lever mechanism is used with minimal moving elements, then the structure is simplified and ease of operation is improved, but the reliability of locking is worsened as door handles can change position unintentionally
Solution Approach 1:
The bolt is designed to pivot between vertical and horizontal positions dynamically. In the horizontal position, the blocking means engage to lock the door; in the vertical position, the door can be opened. This dynamic positioning allows the same component to serve both locking and unlocking functions reliably.
Solution Approach 2:
The blocking means act as an intermediary element between the bolt and the door frame. These blocking means engage with corresponding recesses in the door frame to prevent unintended movement of the door handle, thereby maintaining locking security without requiring additional moving elements.
2Reliability
If additional moving elements are added to prevent unintended handle movement, then locking security is improved, but device complexity increases
Solution Approach 1:
The bolt serves multiple functions: it provides the primary locking action when horizontal, acts as a stop to prevent excessive handle movement, and can be easily pivoted to vertical for unlocking. This multi-functionality eliminates the need for separate components to prevent unintended handle movement.
Solution Approach 2:
The blocking means are integrated into the bolt structure itself rather than being separate components. The bolt combines the locking function with the anti-rattle function by having its blocking means engage with the door frame recesses, thereby simplifying the overall mechanism.
3Reliability
If the blocking means are designed to engage in parallel recesses, then prevention of swinging through is improved, but manufacturing precision requirements increase
Solution Approach 1:
The blocking means are designed with asymmetric engagement surfaces that accommodate minor variations in recess positioning. The geometry of the blocking means allows for slight misalignments while still maintaining effective engagement, thereby reducing the stringency of manufacturing precision requirements.
Data Source
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AI summary
The present invention relates to a locking device for locking a door in the closed position, comprising at least one door handle, wherein the door handle consists of a base body and a handle body, wherein the base body can be attached to the door, wherein the handle body of the door handle comprises a recess for receiving a bolt which is pivotable from a vertical to a horizontal position, wherein the bolt is locked in the horizontal position by a locking means, and to a double swing door with such a locking device.