String Instrument Pickup Resin Base Plate Assembly
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Solution Overview
Problem
Existing pickup designs for stringed instruments face issues with assembly precision due to plastic deformation of metal base plates, leading to increased magnetic resistance and decreased gain.
Innovation Solution
A pickup design featuring a base plate with parallel bobbins and pole pieces penetrating through, with a magnet arranged on the opposite surface to contact the pole pieces, improving assembly precision and maintaining the flatness of the base plate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a metal base plate is used in the pickup, then structural strength is improved, but plastic deformation occurs leading to deteriorated assembly precision
Solution Approach 1:
The patent replaces the metal base plate with a resin base plate, which is a cheaper material that does not suffer from plastic deformation. This substitution resolves the contradiction by using a material that maintains its shape and flatness, thereby preserving assembly precision while still providing sufficient structural strength for the pickup application.
2Reliability
If the magnet is arranged between the base plate and the coil, then magnetic contact is improved, but assembly complexity increases
Solution Approach 1:
The patent inverts the traditional arrangement by placing the magnet on the opposite side of the base plate from the coil, rather than between them. This inversion simplifies the assembly process while maintaining reliable magnetic contact between the magnet and pole piece, as the magnet can be directly positioned to contact the pole piece without requiring complex intermediate structures.
3Power
If the coil bobbin is arranged on the magnet and spacer, then magnetic field generation is improved, but horizontal alignment becomes difficult
Solution Approach 1:
The patent extracts the coil bobbin from the traditional arrangement on top of the magnet and repositions it to be integrated with or adjacent to the base plate structure. This extraction eliminates the need for spacers and maintains horizontal alignment, as the bobbin can be directly positioned relative to the base plate's reference surfaces, thereby improving both magnetic field generation and alignment precision.
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 enhances assembly precision and contact precision between the magnet and pole pieces, resulting in improved gain and reduced complexity in the assembly process.
Implementation Method 1
An electric guitar has a pickup that converts vibrations of strings into electrical signals
Implementation Method 2
a magnet arranged on a second surface of the base plate which is opposite to the first surface such that the magnet contacts the first pole piece and the second pole piece
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
A pickup 10 includes a base plate 3, a first bobbin 21A and a second bobbin 21B arranged in parallel with other on a first surface of the base plate 3, a first pole piece 5A inserted into in the first bobbin 21A and penetrating the base plate 3, a second pole piece 5B inserted in the second bobbin 21B and penetrating the base plate 3, and a magnet 4 arranged on a second surface of the base plate 3 which is opposite to the first surface such that the magnet 4 contacts the first pole piece 5A and the second pole piece 5B.