Pivoted Lever Closure With Interchangeable Inner Shells
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Solution Overview
Problem
Existing pivoting lever locks require significant tool changes and cost increases when switching between different types of locking means, limiting user flexibility and design options due to the need for adaptations in both the lever and recess components.
Innovation Solution
A two-part pivoted lever design featuring a uniformly manufactured outer shell with interchangeable inner shells adapted to various locking means, allowing for easy replacement of locking mechanisms without altering the outer components, enabling cost-effective mass production and customizable configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a profile cylinder lock is integrated into the pivoting lever as a single integrated component, then the locking function is secure and reliable, but any change in locking means type requires significant tool changes and increases manufacturing costs
Solution Approach 1:
The pivoting lever is divided into two separate parts: an outer shell that remains unchanged and an inner shell that houses the locking means. The inner shell can be detached and replaced independently, allowing different locking mechanisms (profile cylinder, round cylinder, magnetic card lock, actuation) to be used without modifying the outer shell or trough components.
Solution Approach 2:
The outer shell is designed with a universal receiving structure that can accommodate multiple types of inner shells with different locking mechanisms. This allows a single outer shell design to support various locking means types, enhancing adaptability while maintaining a consistent external appearance and interface.
2Ease of manufacture
If the pivoting lever is manufactured as a single integrated component, then manufacturing is simpler, but adaptability to different locking means types is limited
Solution Approach 1:
The pivoting lever is segmented into an outer shell and an inner shell that can be manufactured separately using standardized processes, then assembled together. This segmentation allows the outer shell to be mass-produced uniformly while inner shells can be customized for different locking mechanisms.
Solution Approach 2:
The outer shell is pre-manufactured with a standardized receiving structure designed to accommodate multiple types of inner shells. This preliminary design decision enables future flexibility in locking means selection without requiring re-manufacturing of the outer shell.
3Reliability
If custom locking means are integrated into the pivoting lever design, then the locking function is optimized, but the user is limited to specified designs and functions
Solution Approach 1:
The system transitions from a static, fixed locking mechanism to a dynamic, interchangeable configuration. Users can replace the inner shell to change locking functionality based on their needs, making the system adaptable rather than fixed.
Solution Approach 2:
The locking mechanism type can be changed by replacing the inner shell, which alters the functional parameters of the locking system while keeping the external interface consistent. This allows users to select different locking technologies (mechanical, magnetic, electronic) based on their requirements.
Data Source
Figure 1~3
Figure 4a~5
AI summary
The handle has a pivotal lever pivotally mounted on a trough. A closure unit is arranged on the pivotal lever and lockable with the pivotal lever folded into the trough. The pivotal lever is formed with an outer shell (11) facing an operator and uniformly designed based on the type and function of a closure unit. The pivotal lever is preassembled with an inner shell (14) comprising the closure unit and adapted to the closure unit. The inner shell is attached to inner side of the outer shell, where the inner side of the outer shell is faced to the trough.