Battery Pack Pressed Portion for Terminal Rubbing Reduction
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Solution Overview
Problem
The existing electric devices with detachable battery packs face issues of terminal rubbing and frictional wear due to vibration, leading to potential damage and deformation during operation.
Innovation Solution
An electric device body with a housing, guide mechanism, second terminals, and a pressed portion that connects to the battery pack, preventing rattling and terminal contact, thereby reducing frictional wear and improving operability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a gap is formed between the device body and battery pack to reduce frictional resistance during attachment and detachment, then the attaching and detaching operations are facilitated, but the device-side terminal rubs against the battery-side terminal due to vibration during operation
Solution Approach 1:
The pressing function is segmented into multiple pressing portions (first pressing portion at the front end and second pressing portion at the rear end) that independently contact different parts of the battery pack. This segmentation allows the pressing force to be distributed and applied at multiple points, effectively suppressing battery pack vibration and preventing terminal rubbing while maintaining ease of attachment and detachment operations.
2Reliability
If the battery pack is tightly fixed to the device body to prevent vibration and terminal rubbing, then terminal connection stability is improved, but frictional resistance increases making attachment and detachment difficult
Solution Approach 1:
The pressing portions are strategically positioned at specific locations (front end and rear end of the battery pack) rather than applying uniform pressure across the entire interface. This localized pressing approach stabilizes the battery pack against vibration and prevents terminal rubbing at critical areas while maintaining ease of attachment and detachment operations.
3Reliability
If the pressed portion is positioned to contact the battery pack during attachment, then terminal rubbing is prevented, but frictional resistance increases during the attachment process
Solution Approach 1:
The pressing portions are positioned to contact the battery pack after the battery pack has been attached to the device body, not during the attachment process itself. This timing arrangement ensures that the battery pack is already in place before pressing forces are applied, preventing terminal rubbing without increasing frictional resistance during the attachment operation.
Data Source
AI summary
An electric device body in which a battery pack including a plurality of battery cells and a plurality of first terminals is detachably mounted includes: a housing; a guide mechanism; and a plurality of second terminals; and a pressed portion. The battery pack is configured to be attached to and detached from the housing along a first direction. The guide mechanism is provided at the housing and configured to define the first direction. The plurality of second terminals is configured to be connected to the plurality of first terminals upon attachment of the battery pack to the housing. The pressed portion is configured to be pressed against the battery pack in a second direction intersecting the first direction when the battery pack has been attached to the housing.