Jerking-Initiated Switch Terminal Mounting Stability
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Solution Overview
Problem
Conventional jerking-initiated switches have unsteady sensitivity due to the need for precise alignment and insecure mounting of contact terminals, which can be altered by external forces, leading to operational instability.
Innovation Solution
The jerking-initiated switch features an insulating frame with a rolling path and interconnecting members that securely mount electrically conductive terminals, allowing a conductive ball to transition between switching positions upon a jerking action, enhancing sensitivity and stability by ensuring firm terminal engagement and increased contact area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If contact terminals are mounted in a suspended state through through holes in the plug, then assembly is simplified, but manufacturing precision and mounting stability deteriorate due to the need for precise alignment and insecure mounting
Solution Approach 1:
The contact terminals are pre-mounted and firmly secured to the base wall of the insulating frame before final assembly. This preliminary secure mounting eliminates the need for precise alignment during final assembly, as the terminals are already fixed in their correct positions and orientations.
Solution Approach 2:
The mounting structure provides localized secure attachment points on the base wall for each contact terminal. Each terminal is firmly secured at its specific location rather than being suspended, creating stable local mounting zones that maintain precise terminal positions without requiring overall assembly precision.
2Device complexity
If contact terminals are mounted in a suspended state, then device complexity is reduced, but reliability deteriorates due to unsteady sensitivity and susceptibility to external forces
Solution Approach 1:
The contact terminals are pre-fixed to the base wall in a stable configuration before the switch is assembled and put into service. This preliminary action ensures that the terminals maintain their correct positions and orientations, providing stable sensitivity characteristics that are not affected by external forces or assembly variations.
Solution Approach 2:
The contact terminals are integrated with the base wall structure through firm securing, combining the terminal mounting function with the base wall itself. This merging eliminates the separate suspended mounting structure, reducing overall device complexity while simultaneously improving reliability through stable terminal positions.
3Adaptability or versatility
If the included angle between housing and substrate is formed by bending terminals, then adaptability is improved for different mounting orientations, but reliability deteriorates as the angle is liable to be changed by external forces
Solution Approach 1:
The terminal structure is segmented into multiple functional parts: the contact terminal itself, the shank member for electrical connection, and the limb member that forms the guideway. This segmentation allows each part to perform its specific function independently, with the limb members providing stable structural support for the guideway without requiring bent terminals for mounting adaptation.
Solution Approach 2:
The limb members act as intermediary structures between the base wall and the ball contact path. They form the guideway that guides the ball's movement and provide stable structural support, mediating between the fixed base wall and the moving ball without requiring angular adjustments or bends that could be affected by external forces.
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 stabilizes the mounting of contact terminals, enhances sensitivity by ensuring precise electrical contact, and improves operational reliability by maintaining alignment and firm retention of terminal units within the frame.
Implementation Method 1
an electrically conductive ball rollable within an insulating frame to engage or disengage from two pairs of electric contact terminals
Data Source
AI summary
A jerking-initiated switch includes two first shank members and two second shank members secured to first and second lateral sides of a base wall of an insulating frame to define a rolling path for rolling of an electrically conductive ball therealong. Two limb members are respectively and integrally formed with, and extend from, the second shank members to form a guideway along the rolling path such that the ball can slidably contact the limb members, and extend towards the first shank members to terminate at threshold regions that are spaced apart from the first shank members. The limb members have idle regions on the rolling path. Once the ball is jerked to displace from one of the idle and threshold regions to the other, the switch is placed in one of the first and second switching states.