Human-Powered Vehicle Power Supply Accommodating Structure
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Solution Overview
Problem
Existing human-powered vehicle electric devices lack an efficient and secure mechanism for accommodating and powering small components like button cells, which can lead to difficulties in insertion, removal, and secure electrical connection.
Innovation Solution
The electric device features an accommodating structure with a power-supply accommodating part that includes a main body, an attachment member, and inner surfaces defining specific areas and outlines to securely house and connect button cells, along with electrical contacts for positive and negative electrodes, and a holder for easy insertion and removal, ensuring secure attachment and electrical connectivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a power supply accommodating part is designed to accommodate button cells, then the electrical connection and power supply function are improved, but the insertion and removal operation becomes difficult
Solution Approach 1:
The accommodating structure is divided into a main body and a detachable attachment member. The attachment member can be separated from the main body to provide access to the power supply accommodating part, enabling easy insertion and removal of button cells while maintaining secure electrical connection when attached.
Solution Approach 2:
The attachment member acts as an intermediary between the user and the power supply accommodating part. It provides a convenient interface for inserting and removing button cells, while also serving as a protective cover when attached to the main body.
2Volume of moving object
If the accommodating structure is made compact, then the device size is reduced, but the accommodating space for power supply becomes insufficient
Solution Approach 1:
The attachment member nests onto the main body, and the power supply accommodating part is integrated within the attachment member. This nested configuration allows the accommodating space to be充分利用 within a compact overall structure, maintaining small device size while providing sufficient space for button cells.
Solution Approach 2:
The power supply accommodating part utilizes the thickness dimension of the attachment member effectively. By designing the accommodating space to extend through the thickness of the attachment member, sufficient volume is achieved without increasing the planar dimensions of the device.
3Ease of repair
If the attachment member is made detachable, then the ease of maintenance and power supply replacement is improved, but the device complexity increases
Solution Approach 1:
The device is segmented into a main body and a detachable attachment member connected by a simple coupling mechanism. This segmentation enables easy maintenance and power supply replacement by allowing the attachment member to be detached and reattached, while the coupling mechanism remains simple enough to avoid excessive complexity.
Data Source
AI summary
An electric device for a human-powered vehicle comprises an accommodating structure. The accommodating structure includes a main body, an attachment member, and a power-supply accommodating part. The attachment member is configured to be attached to the main body. The power-supply accommodating part is provided at least one of the main body and the attachment member so as to accommodate a power supply, the power-supply accommodating part including an insertion opening and a first inner surface. The first inner surface extends along a reference plane and having a first outline defining a first area as viewed in a direction perpendicular to the reference plane. The insertion opening extends along an insertion opening plane non-parallel to the reference plane. The insertion opening has an opening outline defining an insertion opening area as viewed in a direction perpendicular to the insertion opening plane. The first area is larger than the insertion opening area.