Tape Printer Cartridge Mounting Position Deviation
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Solution Overview
Problem
Existing tape printers face issues with positional deviation of large cassettes during mounting due to the engagement protrusion mechanism, which can cause misalignment and obstruction, affecting the accurate placement and operation of cartridges.
Innovation Solution
The tape printing apparatus incorporates a cartridge mounting portion with a displacement member and an elastic member, where the cartridge abutment portion is positioned inside a virtual holding triangle formed by the three holding protrusions, ensuring the cartridge is held securely and aligned, preventing positional deviation by applying force in the opposite direction to the mounting direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an engagement protrusion with a spring is used to stand the protrusion on the bottom surface of the cassette mounting portion, then the engagement protrusion can effectively engage with the cartridge, but the large cassette may be positionally deviated towards the opposite direction to the mounting direction
Solution Approach 1:
The displacement member is designed to be displaced in advance towards the mounting direction before the cartridge is fully mounted. This preliminary action counteracts the upcoming backward push from the engagement protrusion, preventing positional deviation. The elastic member pre-loads the displacement member to create a counterbalancing force that opposes the harmful backward movement.
Solution Approach 2:
The displacement member acts as a counterbalancing element that opposes the harmful backward force from the engagement protrusion. By displacing the displacement member towards the mounting direction and using the elastic member to apply restoring force in the opposite direction, a counterbalancing mechanism is created that prevents the cartridge from moving backward during mounting.
2Ease of operation
If the displacement member is positioned to protrude from the mounting bottom surface, then the cartridge can be pushed back by the engagement protrusion, but this causes positional deviation of the cartridge from the desired mounting position
Solution Approach 1:
The displacement member is displaced towards the mounting direction in advance, creating a preliminary counteracting force. This preliminary action prevents the cartridge from being pushed back during the mounting process, maintaining positioning accuracy while still allowing easy cartridge insertion.
Solution Approach 2:
The position of the displacement member is dynamically changed during the mounting process. The elastic member allows the displacement member to move from its initial protruded position towards the mounting direction as the cartridge is inserted, adapting to the mounting process while maintaining precise positioning.
3Force
If the cartridge abutment portion is positioned outside the virtual holding triangle, then the cartridge may be pushed back by the displacement member, but this causes the cartridge to be positionally deviated and potentially obstructed
Solution Approach 1:
The cartridge abutment portion is specifically positioned inside the virtual holding triangle formed by the three holding protrusions. This localized positioning ensures that the pushing force from the displacement member acts through a precise geometric center, preventing rotational or lateral deviations. The specific location within the triangle optimizes the force distribution to maintain mounting precision.
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
This configuration effectively suppresses positional deviation of the cartridge, ensuring accurate mounting and operation, allowing for precise printing without obstruction, and enabling the use of both tape and ribbon cartridges with varying widths.
Implementation Method 1
an elastic member that applies force to the displacement member towards opposite direction to the mounting direction
Data Source
AI summary
A tape printing apparatus including three holding protrusions that are provided on a mounting portion cover and that hold a cartridge mounted in a cartridge mounting portion, a displacement member that, when the cartridge is mounted in the cartridge mounting portion, is displaced from a protruded position to a lower-side position by having the cartridge abut against a cartridge abutment portion, and an elastic member that applies force to the displacement member towards an opposite direction to a mounting direction. In the tape printing apparatus, when viewed from the mounting direction, the cartridge abutment portion is provided inside a virtual holding triangle having holding distal end portions that are distal end portions of the three holding protrusions as apexes.