Snap-Action Switch Rocker Layout for Low-Bounce Tactile Switching
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Solution Overview
Problem
Existing snap-action switching elements lack an optimal tactile switching experience and often suffer from annoying bouncing, requiring complex designs and additional components for safe release.
Innovation Solution
A snap-action switching element design featuring a rocker switch with a tension spring and a contact arm, where the rocker switch is rotated transversely to the housing axis, ensuring a compact and efficient mechanism that prevents bouncing through a torque-directed return to the rest position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional snap-action switching elements are used, then the switching mechanism is simple, but the tactile switching experience is poor and bouncing occurs
Solution Approach 1:
The patent applies dynamics by making the rocker switch movable and rotatable, allowing it to dynamically transition between switching positions. The rocker switch can rotate about a rocker rotation axis, enabling smooth transitions between states and providing a tactile feedback mechanism that improves the switching experience while maintaining stability through controlled movement rather than rigid positioning.
Solution Approach 2:
The patent changes the geometric parameters of the switching mechanism by orienting the rocker rotation axis transversely to the housing's longitudinal axis, perpendicular to the actuating element's movement direction. This parameter change allows the rocker switch to move in a direction substantially perpendicular to the actuating element's axis, creating a compact arrangement that eliminates bouncing while providing optimal tactile feedback.
2Reliability
If additional components are added to prevent bouncing and ensure safe release, then switching reliability improves, but device complexity increases
Solution Approach 1:
The patent applies multi-functionality by designing the rocker switch to simultaneously perform multiple functions: it acts as the switching element, provides tactile feedback, prevents bouncing through its rotational movement, and enables automatic return to rest position. The tension spring also serves dual purposes by both actuating the rocker switch and providing the restoring force. This consolidation of functions into existing components eliminates the need for additional safety mechanisms.
Solution Approach 2:
The patent implements self-service through the automatic return mechanism where the tension spring automatically returns the rocker switch to its rest position after switching. The system serves itself by using the stored elastic energy in the tension spring to reset the mechanism without requiring external intervention or additional components, thereby maintaining reliability while minimizing complexity.
3Volume of moving object
If the rocker switch is oriented transversely to the housing axis, then the mechanism becomes compact and efficient, but manufacturing precision requirements increase
Solution Approach 1:
The patent applies asymmetry by orienting the rocker rotation axis transversely to the housing's longitudinal axis, creating an asymmetric arrangement where the rocker switch moves perpendicular to the actuating element's direction. This asymmetric configuration optimizes space utilization within the housing, achieving compactness while the asymmetric geometry naturally guides the relative movements and reduces the stringency of alignment tolerances compared to symmetric configurations.
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
The design provides a smooth, tactilely pleasing switching experience with minimal bouncing, achieved through a compact and efficient mechanism that ensures reliable and automatic return to the rest position without additional components.
Implementation Method 1
a tension spring (70), suspended at the other free end (34) of the rocker switch (30) from a spring suspension section (44, 62)
Data Source
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AI summary
The invention relates to a snap-action switch element (100) with an opener contact, comprising a housing (10), a first and second contact point (61; 62) which are fixed to the housing, a contact arm (43) which can be moved between a rest position and a switch position, and an actuation element (20) which is guided in the housing (10) and by means of which the contact arm (43) can be moved between the rest position and the switch position. A switch rocker (30) is rotatably arranged at one end about a rocker rotational axis (12) running transversely to the housing longitudinal axis, wherein a tension spring (70) is hooked on a spring suspension section (34) at the other end of the switch rocker (30). The actuation element (20) is guided perpendicularly to the housing longitudinal axis and is in engagement with the switch rocker (30) between the two free ends thereof. The second contact point (62) which is fixed to the housing constitutes a contact arm rotational axis which is parallel to the rocker rotational axis (12) and against which one end of the contact arm (43) is pressed by the tension spring (70) hooked into the contact arm (43), wherein the other end of the contact arm (43) contacts the first contact point (61) in the rest position. In the case of a closer contact, the first contact point is arranged in a spaced manner.