Locking Device Panic Release Mechanism
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Solution Overview
Problem
Existing locking devices with blocked handles in closed positions do not allow for manual opening of locked doors, posing a challenge for users to access doors from the inside without mechanical assistance.
Innovation Solution
Incorporating an activation unit that manually cancels the blocking mechanism of the closing and opening mechanism, allowing the handle to be unlocked and opened by rotating a nut, which is blocked in the first operating state but can be released in the second operating state, using a push rod and blocking device that interacts with a blocking element to facilitate manual operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the handle is blocked in the closed position of the locking device, then security is improved, but the ability to manually open the door from the inside is lost
Solution Approach 1:
The blocking element is designed to dynamically change position based on operating state. In normal locked state, the blocking element prevents handle movement. When the activation unit is actuated, the blocking element moves to a release position, allowing manual operation. This dynamic behavior resolves the contradiction by providing both security (blocked state) and manual opening capability (released state) at different times.
Solution Approach 2:
The activation unit serves as an intermediary mechanism between the user and the blocking device. By actuating the activation unit (e.g., via push-button device), the user indirectly controls the blocking element's position. This intermediary allows the user to override the blocking function when needed, while maintaining the blocking function during normal operation.
2Reliability
If the blocking element is always in the path of movement of the push rod, then security is maintained, but manual actuation requires excessive force
Solution Approach 1:
The spring applies a preliminary force to move the blocking element out of the push rod's path of movement in advance. This preliminary action ensures that during normal operation, the push rod moves freely without encountering resistance. The blocking element is only positioned in the path when needed for security, and the spring automatically returns it to the clear position afterward.
Solution Approach 2:
The blocking element's position is dynamically controlled by the spring force. The spring continuously exerts force to keep the blocking element in a predetermined position (out of the push rod's path) unless acted upon by the activation unit. This dynamic positioning minimizes the force required for normal push rod operation while maintaining security when the blocking element is intentionally positioned in the path.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables users to manually open automatically locked doors from the inside with minimal mechanical effort, ensuring safety and convenience by allowing the nut to rotate and release the latch or locking element from its closed position.
Implementation Method 1
The blocking element is prestressed in the direction of the movement path of the push rod
Implementation Method 2
pushed out of the path of movement by the push rod in the second operating state
Data Source
Figure 1a~2b
Figure 3a~4b
Figure 5a~5c
AI summary
A locking device with a locking and opening mechanism integrated in a lock housing, which is automatically actuated by means of an electromagnetic door opener, wherein the locking and opening mechanism is blocked in a closed position in a first operating state and is in an open position in a second operating state, and with a push-button device for actuating the locking and opening mechanism in the second operating state, which is operatively connected to the locking and opening mechanism via a nut, is characterized in that the push-button device has an activation unit which, when manually actuated by a user, releases the blockage of the locking and opening mechanism achieved by the electromagnetic door opener in the first operating state and thereby brings about the second operating state of the open position.