Hole Punch Handle Assembly Linkage Nesting
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Solution Overview
Problem
Conventional hole punches become cumbersome and difficult to use when punching multiple sheets of paper, requiring increased effort and often struggle with storage in small spaces due to their design.
Innovation Solution
A hole punch design featuring a base with a housing and a handle assembly that includes linkages allowing for linear movement to actuate the punch pin, enabling easier operation and compact stowage by nesting linkages within the base when not in use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional hole punches are used to punch multiple sheets of paper, then the punching function is achieved, but the effort required increases and the device becomes difficult to operate
Solution Approach 1:
The handle assembly is designed to move between extended and retracted positions, changing the mechanical advantage dynamically. When punching thick stacks, the handle extends to provide greater leverage and reduce the force needed. When punching thin stacks, the handle retracts to a more compact position.
Solution Approach 2:
The handle assembly nests within the housing when not in use or when punching thin stacks, reducing the overall device footprint. The linkage mechanism folds or retracts into the housing, allowing the device to be stored compactly while maintaining full functionality when needed.
2Volume of moving object
If conventional hole punches are designed for punching capability, then the punching function is achieved, but the device becomes cumbersome and difficult to store in small spaces
Solution Approach 1:
The device transitions between extended and retracted configurations. The handle assembly can be positioned in multiple states, allowing the device to occupy less space during storage while maintaining full punching capability when in use.
Solution Approach 2:
The handle assembly nests within the housing, and the linkage mechanism folds into compact arrangements. This nesting allows the device to be stored in a reduced footprint while preserving all punching functions when deployed.
3Adaptability or versatility
If the handle assembly is designed for full range of motion, then punching capability is maintained, but the device becomes difficult to store compactly
Solution Approach 1:
The handle assembly provides full range of motion when needed for punching but can be positioned in a retracted state for compact storage. The dynamic positioning allows the device to adapt between operational and storage states.
Solution Approach 2:
The linkage mechanism and handle assembly nest within the housing when not in use, reducing the storage footprint while maintaining full punching capability when deployed. The nesting design allows compact storage without sacrificing operational versatility.
Data Source
AI summary
A hole punch includes a base and a handle assembly to actuate a punch pin. The base may include a housing enclosing a punch head, and the housing may include an opening where the handle assembly is adapted to be recessed within the opening. The handle assembly may include a first linkage and a second linkage, each pivotally coupled to the base, and a third linkage pivotally coupled to both the first and second linkages, where the third linkage is arranged to move substantially parallel to the base. The first linkage may be substantially parallel to the second linkage when the punch pin is in a rest position, and the second linkage may be configured to nest within the first linkage when the punch pin is in a deployed position.