Swing Handle Locking Mechanism With Actuated Daytime Release
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Solution Overview
Problem
Existing swing handle arrangements with locking functions are often unnecessarily locked when the handle is against the frame, such as during daytime, and lack flexibility in installation orientation.
Innovation Solution
A swing handle arrangement with a pivotable spindle, an electric actuator, a latch, and a second shaft with a cam mechanism, allowing the handle to be unlocked via an electric actuator or lock cylinder, and featuring a locking element to prevent spontaneous disengagement from the frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the swing handle is locked when against the frame, then the door is secured, but the handle cannot be removed or opened during daytime when locking is unnecessary
Solution Approach 1:
The locking mechanism transitions from a static locked state to a dynamic controllable state. The electric actuator enables the system to switch between locked and unlocked positions based on operational needs, allowing the handle to be removed or opened during daytime when locking is not required, while maintaining security when needed.
Solution Approach 2:
The manual locking mechanism is replaced with an electric actuator system. This substitution allows for automated control of the locking function, enabling the handle to be locked or unlocked electrically without manual intervention, thus providing flexibility in operation during different times of day.
2Reliability
If the swing handle arrangement is designed with a locking function, then security is improved, but the device complexity increases
Solution Approach 1:
The electric actuator serves multiple functions: it controls the locking mechanism, enables handle removal, and facilitates opening operations. This multi-functionality reduces the need for separate dedicated components for each operation, thereby managing device complexity while maintaining enhanced security and operational flexibility.
Solution Approach 2:
The electric actuator acts as an intermediary between the control system and the mechanical locking components. This intermediary element simplifies the overall system architecture by providing a single controlled interface for managing the locking function, reducing the complexity that would otherwise require multiple independent mechanical control systems.
3Reliability
If the latch is prevented from moving linearly by the cam in the groove, then the handle remains locked, but the unlocking process requires turning the second shaft
Solution Approach 1:
The cam mechanism is pre-positioned in the groove to automatically prevent linear movement of the latch when the handle is in the locked position. This preliminary positioning ensures reliable locking without requiring additional components or complex control, while the electric actuator can still rotate the second shaft to unlock the mechanism when needed.
Data Source
AI summary
A swing handle arrangement having a locking function includes a swing handle, a frame, and a spindle arrangement. The swing handle is pivoted to the spindle arrangement, and the spindle arrangement is pivoted to the frame. The swing handle arrangement also includes an electric actuator, a shaft arrangement for the electric actuator, and a latch arranged in the frame. The swing handle further includes a latching surface. The latch is arranged to be against the latching surface of the swing handle in the locking position of the swing handle. The latch and the latching surface are thus arranged to lock the swing handle arrangement, which can be unlocked by means of the electric actuator via the shaft arrangement for the electric actuator.