Operation Button Guide Rib Structure for Oblique Key Pressing
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Solution Overview
Problem
In existing electronic devices, such as desktop calculators, the key structure can lead to failures where the keytop portion is not fully pressed due to interference between the stem portion and the panel when the key is pressed obliquely.
Innovation Solution
The electronic device incorporates an operation button with a flange and a device case featuring a guide rib that guides the flange into a specific region, with the guide rib configured to widen the interval between the flange and the guide rib during a pressing operation, preventing interference and ensuring full pressing of the operation button.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed key structure with stem portion is used, then the key arrangement can be determined for quick and accurate input operation, but the stem portion interferes with the panel when the key is pressed obliquely, causing failure in full pressing
Solution Approach 1:
The guide rib is designed with a tapered configuration where the interval between the guide rib and flange widens in the pressing direction. This dynamic geometric feature allows the structure to adapt during oblique pressing operations, preventing interference between the stem portion and panel while ensuring complete key activation
Solution Approach 2:
The interval between the guide rib and flange is designed to change during pressing operation. By making at least part of the guide rib configurable such that the interval widens when pressing is performed, the structure accommodates oblique pressing angles while maintaining reliable key activation
2Stability of the object's composition
If the guide rib maintains a fixed interval with the flange, then the structure is simple and stable, but the flange interferes with the guide rib during oblique pressing, preventing smooth operation
Solution Approach 1:
The guide rib incorporates a tapered design where the interval to the flange increases in the pressing direction. This dynamic geometric feature allows the structure to adapt during oblique pressing operations, preventing interference between the stem portion and panel while ensuring complete key activation
Data Source
AI summary
An electronic device includes an operation button having a flange, and a device case formed with an opening into which the operation button is inserted. The device case is provided with a guide rib that guides reception of the flange into a region. At least a part of the guide rib is configured such that an interval between the flange and the guide rib is widened when a pressing operation is performed toward a pressing direction of the operation button.