Recording Tape Cartridge Memory Board Retention
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Solution Overview
Problem
Existing recording tape cartridges deform memory boards due to retention structures that press on them, causing damage and instability.
Innovation Solution
A recording tape cartridge design featuring a C-shaped position control member in the lower case and retaining members in the upper case to securely position and retain a memory board at a specific angle without deformation, using a combination of C-shaped and L-shaped ribs and a coil spring to maintain the memory board's orientation and prevent contact with moving parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If retention structures press on the memory board to retain it at a specific angle, then the memory board can be held in position, but the memory board deforms and may be damaged
Solution Approach 1:
The patent introduces a retention structure that uses a pressing member acting through an intermediate mechanism (the C-shaped position control member and L-shaped rib combination) to retain the memory board indirectly. This intermediary structure distributes the retaining force and prevents direct pressing on the memory board surface, thereby maintaining position stability without causing deformation or damage.
Solution Approach 2:
The patent changes the physical parameters of the retention structure by using a C-shaped position control member with specific geometric dimensions and an L-shaped rib configuration. These parameter changes allow the structure to provide adequate retaining force while distributing pressure away from the memory board, preventing deformation while maintaining stability.
2Stability of the object's composition
If the case is configured with retention structures to hold the memory board at a specific angle, then the memory board can be retained, but the structure becomes more complex
Solution Approach 1:
The patent merges the retention function with existing case structures. The C-shaped position control member and L-shaped rib are integrated into the case body, combining multiple functions (positioning, retention, and structural support) into a unified structure. This reduces overall device complexity while achieving reliable memory board retention at the required angle.
Solution Approach 2:
The retention structure is designed to serve multiple functions: the C-shaped position control member provides both positioning and retention, while the L-shaped rib contributes to both structural support and angle maintenance. This multi-functionality reduces the need for separate dedicated retention components, thereby simplifying the overall case structure.
Data Source
AI summary
The present invention provides a recording tape cartridge with a retention structure capable of stabilizing and retaining a memory board without deformation of the memory board. A recording tape cartridge includes a case for accommodating a reel on which recording tape is wound, the case formed by an upper case and a lower case and a non-contact memory board, on which various information is stored and which is disposed at a specific angle within the case. The lower case is formed with a position control member of substantially a C-shape in plan view for controlling the position of the memory board, and a support member for supporting the bottom face of the memory board at substantially the central portion thereof. The upper case is formed with retaining members that face portions of the top face of the memory board at both ends in the memory board length direction.