Hand-Operated Stamp Tilting Locking Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing hand-operated stamps face challenges in intuitive release of locking positions, leading to user difficulties and accidental unlocking, especially during storage or packing, which can result in premature ink traces and reduced product lifespan.
Innovation Solution
Incorporating a rocker element with a supporting strut arranged parallel to the pivot shaft, allowing for direct actuation to release the locking position, reducing reliance on spring force and preventing deformation of components, thus enhancing reliability and simplicity in design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the actuating part is fixed using a locking element that requires displacement against spring force to release, then the locking position is secure, but the release operation becomes non-intuitive and difficult for users
Solution Approach 1:
The patent inverts the traditional locking mechanism by making the locking element (rocker element) directly actuable by the user to release the lock, rather than requiring displacement of the entire actuating part against spring force. The rocker element can be rocked between locked and unlocked positions, providing intuitive direct control while maintaining secure locking through the engagement of the hook-shaped projection with the recess in the housing.
2Extent of automation
If the locking mechanism relies on spring force to maintain locking position, then the locking is automatic, but accidental unlocking occurs during storage or packing
Solution Approach 1:
The patent applies preliminary action by providing a supporting strut that pre-positionedly supports the rocker element in its locked position. This supporting strut prevents the rocker element from moving to the unlocked position during storage or packing, thereby preventing accidental unlocking while maintaining the automatic locking feature through the spring force that returns the rocker element to the locked position after actuation.
3Device complexity
If the rocker element is mounted without a supporting strut, then the structure is simpler, but the pivot shaft and tilt connection deform under permanent spring force
Solution Approach 1:
The patent introduces a supporting strut as an intermediary element that bears the permanent spring force. This supporting strut transfers the load from the pivot shaft and tilt connection to itself, preventing deformation of these critical components while maintaining the simplicity of the overall structure. The supporting strut is designed to be a load-bearing element that specifically addresses the deformation issue without complicating the basic rocker element mechanism.
Data Source
AI summary
A hand-operated stamp (1) comprising a housing (2) in which a stamp unit (3) coupled to an actuating part (8) which can be displaced with respect to the housing (2) is mounted, wherein the actuating part (8) has a locking element (10, 10′) for limiting a displacement of the actuating part (8) with respect to the housing (2), wherein the locking element (10, 10′) is configured as a rocker element (10a) on a pivot shaft (14), wherein the actuating part (8) has a recess (22) for receiving the rocker element (10a), wherein the pivot shaft (14) is arranged in the recess (22), wherein the actuating part (8) has a supporting strut (23) in the recess (22), wherein the supporting strut (23) is arranged parallel to the pivot shaft (14).