Staged Battery Latching Mechanism for Controlled Ejection
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Solution Overview
Problem
Existing mobile computing devices face challenges in safely removing batteries without increasing manufacturing complexity or cost, as the activation of release mechanisms can lead to battery damage or ejection issues.
Innovation Solution
A staged latching mechanism is implemented, with first and second latch stops in the device housing and a movable latch on the battery, allowing for controlled two-stage ejection by engaging and disengaging these stops to prevent accidental ejection during battery removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a release mechanism is activated to remove the battery, then the battery can be removed for recharging and replacement, but the battery may fall from the device and be damaged
Solution Approach 1:
The latching mechanism is segmented into two distinct stages: a first latch stop that releases when the actuator is pressed, and a second latch stop that releases only when the battery is fully withdrawn. This segmentation ensures the battery cannot accidentally drop during the removal process, as the first latch stop maintains engagement until intentional full withdrawal occurs.
2Reliability
If additional release mechanisms are implemented to prevent battery damage, then battery safety is improved, but cost and manufacturing complexity increase
Solution Approach 1:
The patent merges the safety function and release function into a single integrated latching mechanism. The first and second latch stops work together with one actuator to provide both accidental drop prevention and controlled release, eliminating the need for separate safety mechanisms and reducing overall complexity.
Solution Approach 2:
The latching mechanism is designed to be self-regulating through its two-stage geometry. The first latch stop automatically engages and disengages based on actuator pressure, while the second latch stop automatically engages only when the battery is fully withdrawn. This self-service design eliminates the need for additional control systems or complex actuation mechanisms.
Data Source
AI summary
A mobile device housing defines a battery compartment with a wall extending from an open rear to a closed front. A first latch stop extends from the wall between the rear and the front. A second latch stop extends from the wall between the first stop and the rear. A battery receivable in the compartment includes a latch that: extends to engage the first stop and maintain the battery fully inserted, and to engage the second stop and prevent ejection of the battery from an intermediate position; and retracts to disengage from the first stop, unlocking the battery for travel to the intermediate position, and to disengage from the second stop for ejection of the battery from the intermediate position.