Manual Control Device for Door Locks with Quick Pivot Extraction
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Solution Overview
Problem
Existing manual control devices for door or window locks are often pre-assembled, making them inflexible and difficult to adapt to different door or window sizes, complicating inventory management and installation, and requiring specialized tools for assembly.
Innovation Solution
A manual control device featuring a handle with an axially hollow neck, a drive pivot, a block for fixing to the door or window, and a rotation bushing with a rotor module and quick locking means, allowing for easy assembly and adjustment of the square pivot length to accommodate various door or window sizes, and simplifying logistics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the device is pre-assembled, then the installation process is simplified, but the adaptability to different door or window sizes is reduced
Solution Approach 1:
The device is divided into modular components: a handle assembly, a block, and a square pivot. The block can be fixed first, then the square pivot inserted through it, allowing the installer to adapt the configuration to different door or window sizes while maintaining simple installation procedures.
Solution Approach 2:
The square pivot is designed to be insertable and removable through the block, allowing dynamic adjustment of the device configuration. This enables the same base device to be adapted to different applications without requiring multiple pre-assembled variants.
2Ease of operation
If the device is completely pre-assembled, then special assembly tools are not needed during installation, but the ability to adapt the square pivot length is lost
Solution Approach 1:
The device separates the block (fixed to door/window) from the handle assembly (with square pivot). This segmentation allows the square pivot length to be adjusted by selecting different pivot lengths while keeping the block and handle components standardized and tool-free for assembly.
Solution Approach 2:
The block is pre-drilled with a hole for the square pivot passage. This preliminary preparation allows the square pivot to be simply inserted through the block without requiring special assembly tools, while still enabling adaptation to different pivot lengths.
3Adaptability or versatility
If multiple product variants with different square pivot lengths are provided, then adaptability is improved, but inventory management and logistics are complicated
Solution Approach 1:
A single block design with a standardized hole for the square pivot serves multiple functions: it can accommodate different square pivot lengths, work with various handle assemblies, and be fixed to different door or window profiles. This universality reduces the number of unique SKUs needed.
Solution Approach 2:
By separating the block from the handle assembly and making the square pivot a distinct component, the system allows customers to order a standard block and handle set with different square pivot lengths as needed, rather than requiring completely different pre-assembled units for each application.
Data Source
Figure 1~4
Figure 5~8
Figure 9~11
AI summary
The manual control device (1) for manually controlling a lock of a door or window, comprising a handle (2) having a grip (8) and an axially hollow neck (7), a drive pivot (4) engaged in the axial cavity (9) of the neck (7) of the handle (2), a block (3) that is fixable to a profile of the door or window, and a rotation bushing (5) for rotating the handle (2) that extends from the neck (7) of the handle (2) and engages a circular hole (6) of the block (3) into which the pivot (4) is inserted, the block (3) supporting a rotor module (10) solid in rotation with the pivot (4) and having quick locking means the extracting the pivot (4) from the block (3).