Hearing Aid Battery Compartment Securing Element
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Solution Overview
Problem
Existing hearing aid designs fail to adequately prevent unintentional opening of the battery compartment, posing a risk of battery ingestion by small children.
Innovation Solution
A housing design with a pivotable battery compartment and a securing element that can be pivoted between a secured and unlocked position, featuring a projection and a pocket accessible only by a tool, which engages with the housing to prevent accidental opening and includes a recess and stop to enhance security.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a small projection is provided on the battery compartment to enable easy opening with fingernail, then ease of operation is improved, but reliability deteriorates due to risk of unintentional opening by small children
Solution Approach 1:
A securing element is introduced as an intermediary component between the battery compartment and the housing. This securing element can be pivoted between a secured position (engaging behind the projection to prevent opening) and an unlocked position (allowing opening with a tool). The securing element mediates between the conflicting requirements of easy operation and security against unintentional opening.
Solution Approach 2:
The securing function is extracted from the basic battery compartment structure and implemented as a separate, movable securing element. This allows the securing mechanism to be independently controlled and positioned, enabling it to engage or disengage from the projection as needed, rather than being a fixed structural feature.
2Reliability
If a securing mechanism is added to prevent unintentional opening, then reliability is improved, but device complexity increases
Solution Approach 1:
The securing element is designed to be movable rather than fixed, pivoting between a secured position and an unlocked position. This dynamic design allows the mechanism to adapt its state based on operational needs, providing security when closed and ease of opening when needed, without requiring a complex multi-component locking system.
Solution Approach 2:
The battery compartment assembly is segmented into distinct functional components: the battery compartment itself, the projection on the housing, and the separate securing element. This segmentation allows each component to be optimized for its specific function while maintaining overall simplicity.
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The housing has a battery bay (10) installed in an interior portion of a housing structure for pivoting movement into an open position. A securing element (20) is installed in the battery bay and pivoted between secured and unsecured positions. The security element comprises a recess (13) accessed with a tool from an exterior portion of the housing structure. The securing element is released from an engagement behind a projection (16) to allow the securing element to move into the unsecured position when the tool engages with the recess. The battery bay is allowed to move into the open position.