Locking Component Dual Plugs Bridge Mechanism
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Solution Overview
Problem
Existing locking devices, such as keypad-controlled door entry systems and shackle locks, often suffer from user frustration and potential damage due to excess force applied when attempting unauthorized access, leading to complications in calibration and operation.
Innovation Solution
A component featuring two rotatable plugs and a bridge that connects them, with biasing devices and a linear actuator, allows the entry control handle to operate the latch only when correctly signaled, while maintaining the exit handle's connection to the latch, preventing damage from excessive force and ensuring consistent operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a clutch is fitted to the handle to prevent damage from excessive force, then the lock is protected from damage, but the calibration of the clutch adds significant complication to the manufacture of the locking device
Solution Approach 1:
The invention divides the handle spindle into two separate plugs (first plug and second plug) that can rotate independently. The first plug is connected to the entry control handle and the second plug to the exit handle, with a bridge mechanism to connect them when needed. This segmentation eliminates the need for a calibrated clutch by allowing the handles to operate independently or together based on the bridge connection state.
Solution Approach 2:
The bridge acts as an intermediary element that can connect the first plug and second plug when the correct code is entered. When the bridge is in the engaged position, it transmits rotational force from the entry control handle to the latch. When disengaged, the entry control handle rotates freely without transmitting force, preventing damage without requiring clutch calibration.
2Reliability
If the entry control handle is always connected to the latch to prevent unauthorized entry, then security is improved, but the handle cannot be forced open in emergencies
Solution Approach 1:
The connection between the entry control handle and latch is made dynamic through the bridge mechanism. The bridge can be in an engaged position (connecting the plugs) or a disengaged position (allowing independent rotation). This dynamic connection allows the system to switch between secure locked state and emergency exit state based on the bridge position, which is controlled by the code entry mechanism.
Solution Approach 2:
The bridge serves as a controllable intermediary that mediates the connection between the entry control handle and the latch. When the correct code is entered, the bridge engages to allow the handle to operate the latch. In emergency situations, the bridge can be disengaged, allowing the exit handle to operate the latch independently without requiring code entry, ensuring emergency egress while maintaining security during normal operation.
3Ease of manufacture
If a single plug is used to simplify the component structure, then manufacturing is easier, but force application is not evenly distributed leading to inconsistent operation
Solution Approach 1:
Instead of using a single plug, the invention segments the spindle into two separate plugs (first plug and second plug) connected by a bridge. This segmentation allows force to be applied to and distributed from both plugs simultaneously through the bridge, creating even force distribution. The biasing devices associated with each plug further ensure that force is evenly distributed, maintaining consistent operation while still using a relatively simple component structure.
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
This solution ensures secure and reliable operation of locking devices by preventing damage from excessive force and ensuring consistent functionality, including emergency exit capabilities, across various locking mechanisms like door handles and shackle locks.
Implementation Method 1
a first biasing device in use applying force to the bridge
Data Source
Figure 1
Figure 2
Figure 3~6
AI summary
A component for use in a locking device such as a door lock or a padlock or bike lock that uses a shackle is disclosed. The component includes a body and a pair of rotatable plugs which sit within a cylinder of the body. One plug is connected to a handle and the other is connected to a locked release mechanism. A bridge selectively connects and releases the first and second plugs and an actuator, cooperating with biasing devices, is used to determine whether the bridge is in a connecting or releasing condition. This is in turn determines whether the component is acting to operate the lock in a locked or an unlocked condition.