Doorknob Fixing Mechanism with Spring-Loaded Locking Member
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Solution Overview
Problem
Existing doorknob fixing mechanisms in locks are not robust enough to handle high stress and are difficult to use, particularly in electromechanical locks where the doorknob may be exposed to various forces and require easy removal and installation.
Innovation Solution
A fixing mechanism for doorknobs that includes a first and second locking member with a spring element, allowing the locking members to move between positions to securely attach or detach the doorknob from the lock cylinder, utilizing a C-shaped or coil spring for compression and a gap design for easy removal, with an opening tool for assistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a fixing mechanism is designed to be robust enough to handle high stress, then the attachment strength is improved, but the ease of operation deteriorates
Solution Approach 1:
The locking member is designed to move between a first position (engaged with the lock cylinder for secure attachment) and a second position (disengaged for removal). The spring element dynamically adjusts the locking member's position based on applied forces, providing both strong attachment when installed and easy removal when needed.
Solution Approach 2:
The mechanism changes the engagement state parameter by moving the locking member between two distinct positions. In the first position, the locking member engages the lock cylinder to provide strong attachment; in the second position, it disengages to allow removal. This parameter change enables the system to switch between strong attachment and easy removal states.
2Reliability
If the locking member is held in the first position by a spring element, then the reliability of attachment is improved, but the device complexity increases
Solution Approach 1:
The spring element automatically maintains the locking member in the engaged first position without requiring additional components or active control systems. The spring's elastic force continuously pushes the locking member against the lock cylinder, providing reliable attachment through a simple, self-regulating mechanism rather than complex control systems.
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
The mechanism provides a robust and secure attachment of the doorknob to the lock cylinder while allowing for easy installation and removal, reducing stress on sensitive components and simplifying the process with the use of an opening tool.
Implementation Method 1
the spring element is configured to be compressed and to move the locking member towards the first position
Data Source
AI summary
According to a first aspect of the invention, there is provided a doorknob (108) with a fixing mechanism (100) comprising at least a first locking member (102A) and at least a first spring element (104A) coupled with the first locking member (102A), wherein the spring element (104A) is configured to move the locking member (102A) to be in contact with a lock cylinder (106) to prevent movement of the doorknob in relation to the lock cylinder (106) in a longitudinal direction (CL). According to a second aspect of the invention, there is provided a lock arrangement comprising the doorknob (108) with a fixing mechanism (100) and the lock cylinder (106). According to a third aspect of the invention, there is provided an opening tool (110) for the doorknob (108) with the fixing mechanism (100).