Battery Tray Tilting Mechanism for Contact Terminal Durability
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Solution Overview
Problem
Conventional battery trays in printing devices can lead to contact failures or peeling of contact terminals due to excessive loads from battery terminals, which reduces the durability of these components.
Innovation Solution
The printing device incorporates a battery tray with a mounting surface that allows the battery to be positioned in different postures, ensuring that the battery terminal contacts the contact terminal from below, thereby distributing the load and enhancing the durability of the contact terminal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the battery terminal contacts the contact terminal from above during insertion, then the battery can be easily inserted into the battery accommodating portion, but the contact terminal receives excessive load and may peel off or fail, reducing durability
Solution Approach 1:
The patent inverts the conventional contact direction by designing the battery tray to tilt the battery such that the battery terminal contacts the contact terminal from below rather than from above. This inversion changes the load direction on the contact terminal from downward to upward, allowing the contact terminal to flex in its designed direction and avoid peeling off, thereby resolving the contradiction between ease of insertion and contact terminal durability
Solution Approach 2:
The patent employs a tiltable battery tray that dynamically adjusts the battery position during insertion. The battery tray is configured to tilt the battery at a predetermined angle, transforming the static insertion process into a dynamic one where the battery automatically orients itself to contact the contact terminal from below, ensuring proper contact direction while maintaining ease of insertion
2Strength
If the contact terminal is designed to flex in a specific direction, then the contact terminal can accommodate normal insertion forces, but it cannot withstand orthogonal loads from misaligned battery terminals, leading to contact failure
Solution Approach 1:
The patent inverts the contact direction to align with the contact terminal's flexing direction. By designing the battery tray to tilt the battery such that the battery terminal contacts from below, the load is applied in the same direction that the contact terminal is designed to flex, converting a potentially harmful orthogonal load into a beneficial load that utilizes the terminal's inherent flexibility to enhance durability
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 reduces the risk of contact failures and peeling of contact terminals by ensuring that the contact terminals flex upward under a controlled load, thereby enhancing their durability and reliability.
Implementation Method 1
The contact terminal flexes upward in a state where the contact terminal is in contact with a battery terminal provided on an upper surface of the battery
Data Source
AI summary
A printing device includes: a printing engine configured to be driven by electric power from a battery including a battery terminal; a housing defining a battery accommodating portion; a contact terminal facing downward and configured to flex upward; and a battery tray attachable to the battery accommodating portion. In a state where the battery is mounted on a mounting surface of the battery tray, the battery is movable between: a first position at which the battery is in a first posture; and a second position at which the battery is in a second posture. During an attachment process of the battery tray to the battery accommodating portion, a pressing portion of the walls presses the battery at the second position to move the battery to the first position and place the battery in the first posture such that the battery terminal contacts the contact terminal from below.