Modular Tuner Elastic Clamping Reduces Parasitic Capacitance
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Solution Overview
Problem
Existing tuners suffer from parasitic capacitance issues due to gaps between the adaptor and casing, leading to excessive contact resistance and non-compliance with electromagnetic compatibility (EMC) regulations, making them difficult to assemble and costly to manufacture with new molds.
Innovation Solution
A modular tuner design featuring a metallic casing with integrally formed metallic elastic pieces that interfere with the tuner adaptor, reducing parasitic capacitance and impedance through stamping and bending processes, and a flexible assembly method that eliminates the need for new molds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If riveting connection is used to connect the iron casing and adaptor, then the connection is secure, but the unpacking becomes difficult and manufacturing cost increases due to new mold requirements
Solution Approach 1:
The adaptor is divided into a body portion and a clamping portion that can be separated. The clamping portion is designed to be detachable from the body portion, allowing the adaptor to be unpacked and reconfigured. This segmentation enables the same adaptor body to work with different clamping configurations without requiring new molds, thereby reducing manufacturing costs while maintaining secure connection when needed.
Solution Approach 2:
The clamping portion is designed with dynamic characteristics, allowing it to be flexibly attached and detached from the adaptor body. This dynamic design enables the adaptor to transition between different assembly states (assembled for secure connection, disassembled for unpacking), resolving the contradiction between secure connection and ease of unpacking while avoiding the need for new molds for different adaptor types.
2Strength
If planishing process is used to clasp the iron casing, then the adaptor is secured, but gaps remain between components due to mold fault tolerance
Solution Approach 1:
The clamping portion incorporates elastic elements that can deform elastically under applied force. When the clamping force is applied, the elastic portions compress and then expand to firmly grip the iron casing, eliminating gaps without requiring high-precision molds. The elastic deformation parameter allows the structure to accommodate manufacturing tolerances while achieving secure clamping and gap elimination.
Solution Approach 2:
The clamping portion is designed with curved or arc-shaped structures that conform to the shape of the iron casing. This curved geometry allows the clamping portions to wrap around and firmly grip the casing, eliminating gaps between components. The curved design works effectively with the planishing process to achieve both secure clamping and gap elimination without requiring new molds.
3Ease of manufacture
If gaps exist between adaptor and casing, then assembly is easier, but parasitic capacitance is generated causing EMC non-compliance
Solution Approach 1:
The elastic clamping portions act as intermediary elements between the adaptor body and the iron casing. These elastic portions make continuous contact with the casing surface, bridging any potential gaps and eliminating the formation of parasitic capacitance. The intermediary elastic elements maintain electrical continuity while allowing for easy assembly without requiring high-precision fits.
Solution Approach 2:
The elastic portions change their physical state from relaxed to compressed when clamping the casing. This parameter change allows them to conform to the casing surface and eliminate gaps, thereby preventing parasitic capacitance formation. The elastic deformation enables continuous contact between the adaptor and casing, ensuring EMC compliance while maintaining assembly ease.
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 solution effectively improves EMC compliance by reducing parasitic capacitance and impedance, enhancing the shielding effect while reducing manufacturing costs associated with mold creation and research development.
Implementation Method 1
a plurality of metallic elastic pieces and the metallic casing are integrally formed by stamping followed by bending, such that the metallic elastic pieces extend outwardly from the edge of the opening
Implementation Method 2
metallic elastic pieces and the metallic casing are integrally formed by stamping followed by bending
Data Source
AI summary
Disclosed herein are a modular tuner and a method for manufacturing the same. The modular tuner includes a metallic casing, a tuner adaptor and a plurality of metallic elastic pieces. The metallic casing has an opening, and the tuner adaptor has a metallic outer surface. The plurality of metallic elastic pieces and the metallic casing are integrally formed by stamping followed by bending, and the metallic elastic pieces extend outwardly from the edge of the opening of the metallic casing and respectively interfere with the metallic outer surface of the tuner adaptor.