Self-Inking Stamp Protective Cover and Ink Pad Retention
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Solution Overview
Problem
Existing self-inking stamps with central struts lack space for a viewing window, resulting in offset stamp images and poor handling due to the absence of protective covers for the ink pad, leading to soiling and difficulty in handling.
Innovation Solution
A self-inking stamp design without a central strut, featuring a protective cover extending over the ink pad's contact area, open downwards for the ink pad, and angular surfaces for secure attachment, along with a closure cap that can be fitted onto the stamping component for improved retention and protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a protective cover is added over the ink pad, then protection against soiling is improved, but device complexity increases
Solution Approach 1:
The bottom part is segmented into a support device for the ink pad and a protective cover that extends over the contact area. This segmentation allows the protective cover to be integrated as a distinct element that prevents soiling without complicating the overall structure
Solution Approach 2:
The protective cover is merged with the bottom part structure, forming an integrated component rather than a separate attachment. This merging reduces the number of parts and simplifies the overall device complexity while maintaining soiling protection
2Ease of operation
If the cushion-receiving element is open downwards, then ease of handling is improved, but reliability of ink pad retention worsens
Solution Approach 1:
The open downwards design segments the cushion-receiving element from the rest of the bottom part, allowing easy insertion and removal of the ink pad while the protective cover provides the necessary retention structure
Solution Approach 2:
The protective cover acts as an intermediary element that provides retention for the ink pad in the open downwards configuration, preventing the ink pad from falling out while maintaining easy handling
3Reliability
If angular surfaces with fastening means are added to the cushion-receiving element, then ink pad attachment security is improved, but device complexity increases
Solution Approach 1:
Angular surfaces with fastening means are added only to the relevant areas of the cushion-receiving element where ink pad attachment is needed, rather than throughout the entire structure. This localized approach improves attachment security without significantly increasing overall device complexity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances print quality by providing reliable protection against soiling, easy handling, and secure attachment of the ink pad, while allowing for customization and improved retention of the stamping insert.
Implementation Method 1
a spring element (27) arranged to be deformable in a receiving element (38) of the stamping insert (3) for returning the stamping insert (3) into the resting position
Implementation Method 2
a latching element (40) arranged to engage in a recess (42) on the outside of the bow-shaped top part (4) for holding the stamping insert (3) in the stamping position
Data Source
AI summary
In some embodiments, a stamp may include at least one stamping component and one stamping insert. The stamping component may be formed of a top part with a handle element and a bottom part with a cushion-receiving element. The stamping insert may be connected so as to move synchronously via a reversing mechanism having a slide track in the bottom part via an shaft or trunnion to the top part. In the resting position a text plate mounted on the stamping insert may abut against an ink pad soaked with ink in the cushion-receiving element. The stamping insert with the text plate can be shifted by the reversing mechanism into a stamping position. On the ink pad, a protective cover is located on that side on which a handle element is located on a support device of the ink pad. The system including an ink pad and a closure cap.