Axial Transforming Door Handle Assembly for Keyless Interior Locking
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Solution Overview
Problem
Existing door and window handle assemblies lack an efficient mechanism for locking from the inside without requiring a key or unsightly privacy lock buttons, making it inconvenient to secure doors and windows from the inside.
Innovation Solution
A handle assembly that transforms between a rest mode and a locked mode through axial movement of its components, preventing the latch from being operated from the outside, eliminating the need for a separate privacy lock button and allowing secure locking from the inside without a key.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a privacy locking button is added to the handle assembly, then locking function from inside is improved, but appearance quality deteriorates
Solution Approach 1:
The locking function is merged with the existing handle grip structure. The first handle grip serves dual purposes: as a normal operating handle and as a locking mechanism when pushed axially. This eliminates the need for a separate privacy lock button, maintaining appearance quality while providing the locking function.
Solution Approach 2:
The first handle grip is designed with multi-functionality. In normal mode, it operates as a standard handle for opening the door. When pushed axially inward, it transforms the latch mechanism to a locked state. This universal design provides both aesthetic appearance and locking functionality within a single component.
2Reliability
If a separate deadbolt or lockable latch is added, then security is improved, but device complexity increases
Solution Approach 1:
The security locking function is merged into the existing latch mechanism rather than adding a separate deadbolt. The axial movement of the first handle grip transforms the latch from an operable state to a locked state, providing security while maintaining simplicity of the overall device structure.
Solution Approach 2:
The latch mechanism is designed with dynamic transformation capability. It can switch between two states: a normal latched position where the second handle grip can operate it, and a locked position where axial movement of the first handle grip prevents operation. This dynamic state change provides security without requiring a separate static locking device.
3Ease of operation
If axial movement mechanism is added to transform between locked and rest modes, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The handle assembly is segmented into functionally distinct components: the first handle grip for locking/unlocking operations, the second handle grip for normal operation, and the latch mechanism with transformable elements. This segmentation allows each component to have a specific function while working together as an integrated system, making the axial movement mechanism easier to understand and operate.
Solution Approach 2:
The mechanism employs dynamic transformation where the latch components can change their operational state through axial movement. The transformable latch means transitions between a first configuration (operable with second handle grip) and a second configuration (locked by first handle grip movement), providing ease of operation through intuitive axial pushing motion.
Data Source
AI summary
A handle assembly for a window or door leaf having first and second opposing sides, the handle assembly having a forward end and a rearward end, the handle assembly comprising: a first handle grip, configured for mounting to a first side of the leaf, the first handle grip being moveable rotatably and axially relative to a first handle axis, and a second handle grip configured for mounting to the second side of the leaf, the second handle grip being movable at least rotatably relative to a second handle axis, each handle grip having a closed position, wherein the handle grip is in a first angular position and an open position, wherein the handle grip is in a second angular position, the handle assembly having a rest mode and a locked mode.