Portable Stamp Ink Distribution via Pivot Mechanism
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Solution Overview
Problem
Conventional portable stamps face issues with ink pad and stamp pad wear, leading to incomplete ink coating due to clearance design and wear-down over time, resulting in an inability for the stamp pad to touch the ink pad uniformly when folded.
Innovation Solution
The portable stamp incorporates a guiding slot and positioning recesses in the stamp housing, along with pivotally mounted ink and stamp seats using torsion springs, ensuring the stamp pad consistently contacts the ink pad when folded and allowing for efficient ink distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If clearances are designed between the operating member, ink member, stamp seat, and stamp housing to allow movement, then the stamp components can move freely for stamping operation, but the ink pad and stamp pad cannot maintain consistent contact when folded due to wear and thickness reduction
Solution Approach 1:
A positioning protrusion is introduced as an intermediary element between the ink member and stamp housing. This protrusion engages with a corresponding positioning recess in the stamp housing to establish a precise reference position for the ink member, ensuring consistent contact with the stamp pad while allowing the necessary movement freedom during operation.
2Adaptability or versatility
If the ink member and stamp seat are pivotally mounted to allow rotation for stamping, then the stamp can be deployed for use, but the components cannot maintain a specific folded position due to wear and clearance
Solution Approach 1:
The positioning protrusion on the ink member acts as an intermediary that engages with a positioning recess in the stamp housing, creating a precise mechanical stop that defines the folded position. This engagement mechanism maintains positioning accuracy despite the pivotal movement capability and component wear over time.
3Productivity
If clearances are provided for component movement, then the stamp mechanism can operate smoothly, but the stamping surface cannot touch the ink pad uniformly after extended use
Solution Approach 1:
The positioning protrusion-engagement system serves as a mediator that establishes and maintains the correct spatial relationship between the ink member and stamp seat. This ensures uniform contact between the stamping surface and ink pad during operation, compensating for clearance and wear effects.
Solution Approach 2:
The positioning protrusion pre-establishes the correct position of the ink member relative to the stamp housing before stamping operation begins. This preliminary positioning action ensures that even after extended use and wear, the components return to their correct relative positions, maintaining uniform contact.
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
Ensures uniform ink coating of the stamp pad by maintaining contact with the ink pad even when folded, extending the life of the ink and stamp pads by preventing wear-down and ensuring effective stamping functionality.
Implementation Method 1
Each of at least one side edge of the ink member has a positioning protrusion. Each positioning protrusion selectively engages in a corresponding positioning recess of the stamp housing, such that the ink member can be folded at a specific position in the stamp housing.
Data Source
AI summary
A portable stamp has a stamp housing, and a driving member, an ink member with an ink pad and a stamp seat for mounting a stamp pad mounted in the stamp housing. An operating member is mounted through a guiding slot of the stamp housing and is connected to the driving member. Each of the ink member and the stamp seat is pivotally connected to the driving member via a pivot rod and a torsion spring. By pushing the driving member, the ink member and the stamp seat can be driven to selectively pivot out of the stamp housing or be folded in the stamp housing. When the portable stamp is folded, a stamping surface of the stamp pad that is mounted on the stamp seat is sure to touch the ink pad of the ink member and be coated with the ink uniformly.