Key Structure With Segmented Pressing Element For Remote Controller
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Solution Overview
Problem
Conventional remote controller key structures with single elastic pressing elements often suffer from size mismatches and precision issues, leading to inconsistent triggering of switch elements due to external force misalignment, resulting in unsatisfactory sensitivity and reliability.
Innovation Solution
A key structure comprising a hard pressing element and triggering post, covered by a soft tactile covering member, where the triggering post is accurately aligned with the switch element, allowing for sensitive triggering even with off-center external force application, and an elastic arm provides additional resilience and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a single elastic pressing element is used to cover the switch element, then the structure is simple and easy to manufacture, but the triggering sensitivity and reliability deteriorate due to size mismatch and force misalignment
Solution Approach 1:
The pressing element is divided into a hard pressing element and a soft covering member, where the hard pressing element provides precise force transmission and the soft covering member provides tactile feedback and size adaptation, resolving the contradiction between manufacturing simplicity and triggering precision
Solution Approach 2:
Different regions of the pressing element have different material properties - the hard pressing element region provides precise mechanical coupling with the switch element, while the soft covering member region provides tactile comfort and size adaptation, allowing each region to optimize its function
2Ease of manufacture
If the elastic pressing element is made by elastic plastic molding process, then the manufacturing process is simple, but the size and shape precision deteriorate
Solution Approach 1:
The pressing element is segmented into two parts manufactured by different processes: the hard pressing element can be manufactured with high precision using injection molding or CNC machining, while the soft covering member is manufactured separately and assembled, combining the advantages of different manufacturing methods
Solution Approach 2:
The pressing element uses composite construction with hard and soft materials, allowing each material to be optimized for its specific function and manufactured by appropriate processes, thereby achieving both ease of manufacture and high precision
3Ease of operation
If the external force is applied to the periphery region of the switch element, then the user's pressing position is flexible, but the switch element cannot be triggered successfully
Solution Approach 1:
The soft covering member acts as a flexible shell that deforms under external force and transmits the force to the hard pressing element and switch element, allowing flexible pressing positions while ensuring reliable triggering through proper force transmission
Solution Approach 2:
The soft covering member serves as an intermediary between the user's finger and the hard pressing element, transmitting force from various pressing positions to the precise location needed to trigger the switch element reliably
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances the sensitivity and reliability of switch element triggering by ensuring accurate alignment and force distribution, allowing the switch element to be triggered effectively regardless of external force position, improving overall user interaction with remote controllers.
Implementation Method 1
The covering member is made of soft material. When the covering member is pressed by the user, a soft tactile feel of pressing the covering member is provided
Data Source
AI summary
A key structure includes a casing, a covering member, a pressing element, a triggering post, a switch element. The casing has an opening. The opening is covered by the covering member. The pressing element is disposed within the opening and connected with the covering member. The pressing element includes a middle part and an extension part. The triggering post is installed on the middle part of the pressing element. The triggering post is extended in the direction toward the inner position of the casing. When an external force is applied to the middle part of the pressing element, the triggering post is moved toward the switch element to push the switch element. When the external force is applied to the extension part of the pressing element, the triggering post is correspondingly moved with the pressing element in an inclined manner to push the switch element.