Press Operation Apparatus Pivoting Mechanism for Reduced Resistance
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Solution Overview
Problem
Existing press operation apparatuses face issues with increased resistance and unsteadiness when pressing buttons away from the center, leading to poor operability and difficulty in returning to the original position due to restricted four-directional side surfaces and inadequate urging force distribution.
Innovation Solution
The apparatus features a case with retaining and positioning structures, including slanted projections and catches, which allow the operation body to pivot and reduce resistance by moving projections away from opposing positioning portions during pressing, ensuring uniform clearances and stable operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the four-directional side surfaces of the retainer are restricted by guide grooves, then the position of the press button is set uniformly, but the resistance increases when pressing away from the center
Solution Approach 1:
The guiding function is segmented into two parts: guide grooves for position setting and positioning projections for movement control. This segmentation allows the guide grooves to provide positional accuracy while the positioning projections enable smoother movement by reducing restrictive contact during pressing operations.
Solution Approach 2:
Positioning projections act as intermediaries between the operation body and the case. These projections move away from opposing positioning portions during pressing, mediating the interaction to reduce resistance while maintaining positional control through the guide grooves.
2Ease of operation
If the clearance between rib and guide groove is increased, then the sliding load is reduced, but the unsteadiness of the press button increases
Solution Approach 1:
The positioning system is segmented into positioning projections and opposing positioning portions that work together to provide stability. The projections move away during pressing to reduce load, while the opposing portions maintain stability by limiting excessive movement, thus resolving the contradiction between reduced sliding load and maintained stability.
3Reliability
If the urging force is increased to ensure return to original position, then the reliability of position return is improved, but the resistance when pressing increases
Solution Approach 1:
The positioning projections are designed to dynamically move away from the opposing positioning portions during pressing and then return to their original positions. This dynamic behavior allows the urging member to provide reliable return force without creating excessive resistance during the pressing operation, as the projections temporarily disengage to reduce friction.
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 design reduces resistance and improves operability by allowing the operation body to pivot smoothly, maintaining uniform clearances and ensuring stable positioning, thus enhancing the overall usability of the press operation apparatus.
Implementation Method 1
an urging member (14) disposed on the case (12) and urging the operation body (11) in a direction opposite to a direction in which the operation body is pressed
Implementation Method 2
the projection moves away from the opposing positioning portions when the operation body is pressed and pivots on one of the retaining structures (20)
Data Source
AI summary
When an operation body is urged upward by a flat spring and is in a return position, a projection disposed on the operation body is held between opposing positioning portions and the position of the operation body in an X-direction is set. When the operation body is pressed at a position away from a central portion of the operation body in the X-direction, the operation body pivots on one of retaining structures downward. At this time, the projection moves away from the opposing positioning portions, and resistance against a pressing operation can thereby be reduced.