Rotational Engagement Transfer Tool for Case Strength and Refillability
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Solution Overview
Problem
Existing refilling type transfer tools with a half dividing structure suffer from deflection and unnecessary pressing force issues when used, leading to deteriorated transferring performance and difficulty in accurate assembly.
Innovation Solution
A transfer tool design featuring a holding portion that securely attaches to both cases, with an engagement portion allowing detachable engagement in the opposite direction, enabling secure holding and improved strength, and allowing for easy replacement by rotating the cases around the engagement portion without interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the case has a half fitting casing structure constituted by the first case and the second case, then the transfer tool can be refilled by replacing the first case, but the case generates deflection under strong force during use, causing unnecessary pressing force on internal parts and deteriorated transferring performance
Solution Approach 1:
The case is divided into two separate cases: a first case (cartridge) that can be replaced and a second case (body) that remains. The engagement portion with rotational engagement capability allows these segmented parts to connect securely while maintaining the ability to replace only the consumable first case, thus preserving refillability while improving overall structural strength.
2Ease of operation
If the engagement hook and locking portion are engaged in the state in which the first case and the second case are fitted to each other, then the cases are connected, but it is hard to assemble the integral case until accurately positioned, making positioning labor-intensive
Solution Approach 1:
The engagement portion is designed with a rotational engagement mechanism that guides the first case into accurate position during the assembly process. By rotating the first case relative to the second case, the engagement features automatically align and lock, performing the positioning action preliminarily during assembly rather than requiring separate manual positioning adjustments.
Solution Approach 2:
The engagement portion utilizes rotational motion (circular path) to bring the engagement hook and locking portion into proper alignment. This curved engagement path makes it easier to assemble the integral case by simply rotating the first case into place, eliminating the need for precise manual positioning.
3Device complexity
If the first case and the second case are fitted together with engagement hook and locking portion, then the cases are connected, but the structure lacks sufficient shape retention and strength during use
Solution Approach 1:
The holding portion and engagement portion are combined into an integrated connection system where the holding portion provides external support and shape retention while the engagement portion provides internal mechanical connection. This merging of functions improves both shape retention and structural strength without significantly increasing device complexity.
Data Source
AI summary
The invention provides a transfer tool which can preferably maintain a shape while improving a strength at a time of using, and has an improved usability. The transfer tool is provided with a first case (1) holding a replacement part including at least a transferring object, a second case (2) detachably engaged with the first case (1) and holding a non-replacement part constituting at least a part of a feeding mechanism part feeding the transferring object to a transferred object, a holding portion (3) outside fitted detachably to a predetermined region of the first case (1) and the second case (2) and capable of holding the first case (1) and the second case (2), and an engagement portion (X) detachably engaging the first case (1) and the second case (2) in a opposite direction of the holding portion (3).