Push Button Positioning via Segmented Abutting and Pushing Mechanism
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Solution Overview
Problem
Existing input devices face challenges in achieving accurate positioning and smooth operation of push buttons due to manufacturing and assembly tolerances, which can lead to interference or looseness, affecting the functionality of the button.
Innovation Solution
The input device incorporates a positioning part with an abutting and pushing mechanism, supported by a bearing part, allowing precise positioning and resilient biasing to prevent interference, ensuring accurate placement and smooth operation of the push button.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the gap between the hinge and the inner wall surface of the hole is made small for accurate positioning, then positioning precision is improved, but the hinge may interfere with the inner wall surface due to manufacturing or assembly tolerances, preventing smooth operation
Solution Approach 1:
The positioning function is segmented into two independent parts: the abutting part handles positioning by contacting the first face of the bearing part, while the pushing part handles smooth operation by resiliently biasing against the second face. This segmentation allows each part to optimize for its specific function without compromising the other.
Solution Approach 2:
The positioning part acts as an intermediary mechanism between the push button and the base plate. It mediates the interaction by providing controlled contact through the abutting part for positioning while the pushing part provides resilient biasing, thus facilitating smooth operation without direct interference between the hinge and the hole's inner wall surface.
2Ease of operation
If the gap between the hinge and the inner wall surface of the hole is widened to avoid interference, then smooth operation is improved, but the push button may come loose or interfere with the surrounding frame, compromising positioning accuracy
Solution Approach 1:
The positioning mechanism is segmented into an abutting part that contacts the first face of the bearing part for accurate positioning, and a pushing part that resiliently biases against the second face for smooth operation. This segmentation enables the gap to be optimized for smooth operation while the abutting part maintains positioning precision independently.
Solution Approach 2:
Different local regions of the positioning part have different functions: the abutting part is designed for precise positioning by abutting against the first face, while the pushing part is designed for resilient biasing against the second face. This local differentiation allows each region to optimize for its specific quality requirement.
3Device complexity
If a single contact point is used between the hinge and the hole, then the structure is simple, but manufacturing and assembly tolerances cause interference or looseness, affecting functionality
Solution Approach 1:
The single contact interface is segmented into two distinct contact points: the abutting part contacting the first face of the bearing part for positioning, and the pushing part contacting the second face for resilient biasing. This segmentation improves functional reliability by separating positioning and operation functions while maintaining relatively simple structure.
Solution Approach 2:
The pushing part is resiliently biased to provide beforehand cushioning that compensates for manufacturing and assembly tolerances. This resilient biasing ensures smooth operation by preventing interference before it occurs, thereby improving functional reliability without significantly increasing structural complexity.
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
This solution enables both accurate positioning and smooth operation of the push button, preventing interference and looseness, while maintaining stable rotational movement and high operability.
Implementation Method 1
a pushing part resiliently biased toward and pushing a second face opposite to the first face
Data Source
AI summary
An input device includes a base plate and a push button rotatably provided on a top surface of the base plate. The base plate has a bearing part protruding from the top surface. The push button has an operation surface part receiving a push down operation and a positioning part rotatably supported by the bearing part. The positioning part positions the push button in the plate thickness direction of the bearing part by an abutting part abutting on a first face of the bearing part and a pushing part resiliently biased toward and pushing a second face of the bearing part.