Window Door Gearing Radial Locking Mechanism
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Solution Overview
Problem
Existing window and door gear mechanisms lack effective, cost-efficient security measures to prevent unauthorized manipulation, often requiring complex and costly additional locking mechanisms.
Innovation Solution
A gear mechanism with a nut element that can be rotated between a release position and a locked position, where the nut element is radially displaced relative to the axis of rotation, preventing adjustment movements from the fitting element, thereby providing a self-locking function to secure the window or door.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a gear mechanism is used to couple the handle to the drive rod, then the adjustment movement is transmitted effectively, but unauthorized manipulation can also be transmitted to the handle
Solution Approach 1:
The nut element is designed to change its radial position dynamically based on the direction of force applied. When force is applied from the drive rod side (normal operation), the nut remains in the release position allowing rotation. When force is applied from the handle side (manipulation attempt), the nut is pushed into the locking position where it blocks rotation, thus adapting the locking state based on the operational context
Solution Approach 2:
The nut element acts as an intermediary between the handle and the drive rod. It selectively transmits or blocks the transmission of movement based on its radial position, which is determined by the direction of applied force. This intermediary mechanism prevents direct coupling in both directions under all conditions
2Reliability
If the nut element is locked against rotation in the locking position, then manipulation is prevented, but normal adjustment movement must be blocked
Solution Approach 1:
The mechanism applies preliminary anti-action by positioning the nut element in the locking position before any manipulation attempt occurs. The locking position is prepared in advance such that when force is applied from the handle side, the nut is already positioned to block rotation, preventing manipulation before it can succeed
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 gear mechanism effectively enhances security against unauthorized manipulation by blocking adjustment movements from the fitting element while allowing normal operation, thus providing increased security without the need for additional locking mechanisms.
Implementation Method 1
the nut element is movable radially to the axis of rotation between a release position, in which it is rotatable about a housing-fixed axis of rotation, and a locking position, in which it is locked against rotation about the axis of rotation
Data Source
Figure 1
Figure 2A~2B
Figure 3A~3B
AI summary
The invention relates to a gearing for a fitting assembly of a window, a door, or the like comprising a housing and a socket element, which is movably supported in a socket mount of the housing and which is coupled to a fitting element, in particular a drive rod, of the fitting assembly in such a way that driving is enabled. The socket element can be moved between a release position, in which the socket element can be rotated about an axis of rotation fixed to the housing, and a blocking position, in which the socket element is blocked against rotation about the axis of rotation in at least one direction of rotation, radially to the axis of rotation. The socket element is designed to be moved into the blocking position if the socket element is in the release position and is driven to move in said direction of rotation by the fitting element.