Sealed Power Supply Holder With Locking Contacts for Dual Power Input
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Solution Overview
Problem
Existing electronic devices that use both battery and external power supplies face challenges in achieving stable electrical contact and sealing performance, particularly due to the design of rotating lids and holes for external power connections, which can lead to poor sealing and potential ingress of liquids or vapors.
Innovation Solution
An electronic device design featuring a power supply unit with a locking mechanism, a power supply adjustment board, and a cap member that ensures electrical contact between terminals while maintaining a sealed environment by using a power supply line that penetrates the cap member, allowing for the secure connection of either a battery or external power supply.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rotating opening/closing lid is used to press the battery or power adapter, then electrical contact between terminals is ensured, but sealing performance is insufficient
Solution Approach 1:
The power supply accommodation portion is divided into two functional components: the lid structure that provides electrical contact through terminal pressing, and the cap member that provides sealing. This segmentation allows each component to specialize in its primary function without compromising the other.
Solution Approach 2:
A cap member is introduced as an intermediary component between the power supply unit and the external environment. This cap member seals the opening of the power supply accommodation portion while allowing the power supply line to penetrate through it in a sealed state, thus mediating between the need for electrical connection and environmental protection.
2Adaptability or versatility
If a hole is provided on the side surface for external power supply connection, then power can be supplied from external power supply, but liquid or vapor may enter the power supply accommodation portion
Solution Approach 1:
The cap member acts as a flexible barrier that can be penetrated by the power supply line while maintaining sealing. The cap member seals around the power supply line, allowing electrical connection while preventing liquid or vapor ingress through the opening.
3Object-affected harmful factors
If the power supply accommodation portion is sealed to prevent liquid ingress, then sealing performance is improved, but electrical contact between terminals may become unstable
Solution Approach 1:
The sealing function and electrical contact function are separated into different components: the cap member handles sealing while the lid structure handles electrical contact. This allows the power supply accommodation portion to be sealed while maintaining stable electrical contact through the dedicated lid structure.
4Reliability
If a locking mechanism is added to lock the power supply unit, then electrical contact stability is improved, but device complexity increases
Solution Approach 1:
The locking mechanism is integrated into the lid structure itself, combining the functions of terminal pressing and locking action in a single component. This reduces overall device complexity while maintaining reliable electrical contact and stable power supply unit positioning.
Data Source
AI summary
A power supply unit includes a power supply adjustment board and a holder that holds the power supply adjustment board, an accommodation member that accommodates the power supply unit inserted from an opening, and a cap member that closes the opening, wherein a positive electrode terminal and a negative electrode terminal are arranged side by side in the accommodation member, and a positive electrode terminal and a negative electrode terminal are arranged side by side on one end side in the power supply unit. A locking mechanism is provided in the accommodation member such that the positive electrode terminal and the negative electrode terminal of the power supply unit are brought into electrical contact with the positive electrode terminal and the negative electrode terminal of the accommodation member, and power supply lines are disposed to penetrate the cap member in a sealed state and configured for connecting an external power supply to the power supply adjustment board.