Bar Handle Lock with Integrated Push Release
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Solution Overview
Problem
Conventional bar handles with incorporated locks are difficult to open quickly, especially in emergency situations, and pose challenges for users with reduced motor capacities, as they require rotating a key or actuation knob, which can be cumbersome and violate accessibility standards.
Innovation Solution
A bar handle with a manual push-release mechanism integrated into the tubular element, allowing for easy operation with a single manual push, reducing the force required and enabling quick door opening without grasping or turning, suitable for both sliding and leaf doors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a key cylinder or actuation knob is used to operate the lock, then the lock can be securely fastened, but the door cannot be opened quickly and it requires excessive force for users with reduced motor capacities
Solution Approach 1:
The operation mechanism is segmented into two independent functions: a key cylinder for secure locking and a separate pusher element for quick release. The pusher element is integrated into the tubular element and can be actuated independently without rotating the key, allowing rapid door opening while maintaining lock security through the separate key-operated locking elements.
Solution Approach 2:
A pusher element acts as an intermediary mechanism between the user and the lock system. This pusher element, integrated into the tubular element, transmits linear pushing motion to retract the locking elements from the dead holes, providing a simple intermediate action that bypasses the need for key rotation while maintaining secure locking when engaged.
2Reliability
If a key rotation mechanism is used, then the lock can be actuated, but it violates accessibility standards requiring maximum 5 pounds of force and no gripping or turning
Solution Approach 1:
Instead of requiring rotational motion to unlock (traditional approach), the invention inverts the operation by using linear pushing motion to retract the locking elements. The pusher element moves along the axis of the tubular element, converting the unlocking action from rotation to linear displacement, which complies with ADA accessibility standards.
Solution Approach 2:
The traditional key rotation mechanical system is supplemented with a pusher element that uses linear mechanical displacement instead of rotational motion. This substitution replaces the need for gripping and turning with a simple pushing action that requires minimal force and complies with accessibility requirements while maintaining lock functionality.
3Device complexity
If the lock elements are positioned in the tubular element of the second bar, then the lock mechanism can be compact, but the operation becomes more difficult for users with reduced motor capacities
Solution Approach 1:
The pusher element is nested within the tubular element, with the pusher integrated into the hollow structure of the tubular element. This nesting arrangement maintains the compact design of the lock mechanism while providing an accessible external pushing surface that users can easily actuate without requiring fine motor skills or excessive force.
Data Source
AI summary
A bar handle with incorporated lock having a tubular element for gripping a handle, installed on a face of a door by way of interposition of at least one spacer element, anda lock which is at least partially contained inside the tubular element. The handle includes a release device for releasing the lock, which is configured to be operated manually with a pusher element installed on the tubular element.the handle comprises a release device for releasing the lock, which is configured to be operated manually with a pusher element installed on the tubular element.