Universal Door Lock Actuator with Adjustable Driving Member
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Solution Overview
Problem
Current door lock outer operating devices require separate designs for different latch devices, leading to increased manufacturing costs and limited compatibility due to variations in installation location and structure.
Innovation Solution
An outer operating device with a modular design featuring a mounting plate, casing, and adjustable driving member, allowing for adaptation to various latch devices by changing the length and coupling position of the driving member, enabling wider applications and reduced manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate outer operating devices are designed for different latch devices, then functionality and reliability are improved, but device complexity and manufacturing costs increase
Solution Approach 1:
The outer operating device is designed with a universal mounting plate and casing structure that can accommodate different latch device types (mortise locks and panic exit door locks). The standardized interface and adjustable components enable a single device design to perform multiple functions across different lock applications, reducing the need for separate specialized designs.
Solution Approach 2:
The outer operating device is divided into modular components including a mounting plate, casing, and interchangeable driving members. This segmentation allows the core structure to remain standardized while only the driving member needs to be modified for different latch device types, simplifying the overall design complexity.
2Adaptability or versatility
If separate outer operating devices are produced for different latch devices, then adaptability is improved, but manufacturing costs and loss of substance increase
Solution Approach 1:
The mounting plate and casing are designed as universal components that can be used across different latch device applications. This universality allows manufacturers to produce these components in larger quantities for a single design, reducing per-unit manufacturing costs and material waste compared to producing separate components for each latch device type.
Solution Approach 2:
The patent merges the common structural elements (mounting plate, casing, cylinder) into a single standardized outer operating device that serves multiple latch device types. Only the specific driving member varies, allowing the majority of components to be shared across product lines, thereby reducing overall manufacturing costs and material consumption.
3Device complexity
If a standardized outer operating device design is used, then manufacturing costs and device complexity are reduced, but adaptability to different latch devices deteriorates
Solution Approach 1:
The outer operating device incorporates adjustable and interchangeable components, particularly the driving member, which can be configured or replaced to match different latch device requirements. This dynamic adaptability allows a standardized base design to accommodate variations in application needs without requiring complete redesigns.
Solution Approach 2:
While the overall structure (mounting plate and casing) maintains standardized uniformity for manufacturing efficiency, the driving member is designed with local variations to match specific latch device types. This localized differentiation preserves adaptability while maintaining simplicity in the majority of the device structure.
Data Source
AI summary
An outer operating device for a door lock includes a mounting plate mounted to an outer side of a door. A driving wheel is pivotably mounted in a mounting seat fixed to the mounting plate. A driving member is pivotably mounted in the mounting seat and meshes with the driving wheel. A distal end of the driving member is operably connected to a latch of a latch device. A handle is pivotably mounted to the mounting seat and includes a lever. A movable block is slideably received in the driving wheel and includes a notch. When a pressing end of the lever is not aligned with the notch of the movable block, the latch can be retracted to an unlatching position by pivoting the handle. When the notch is aligned with the notch of the movable block, the latch cannot be retracted by pivoting the handle.