Transformer Receptacle Vertical Wire Routing for PCB Space
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Solution Overview
Problem
Conventional transformer installation methods waste circuit board space by requiring extended lead wires to meet insulation safety codes, preventing devices from being placed between the transformer and secondary-side contacts.
Innovation Solution
A receptacle for transformers with an electrically insulative bottom wall and upright wall configuration that allows lead wires of the secondary winding to be extended over the upright wall and bonded to the circuit board, maintaining the required insulation distance without occupying additional space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the lead wires of the secondary winding are extended to meet insulation safety codes, then the insulation distance is improved, but the circuit board space is wasted
Solution Approach 1:
The patent utilizes the vertical dimension by extending lead wires over the upright wall of the receptacle and turning them downwardly toward the circuit board. This three-dimensional routing allows the insulation distance requirement to be met by utilizing vertical space rather than consuming additional horizontal circuit board area, thereby resolving the contradiction between reliability (insulation distance) and space utilization.
2Area of stationary object
If devices are placed between the transformer and secondary-side contacts, then circuit board space utilization is improved, but the insulation distance requirement cannot be met
Solution Approach 1:
The receptacle structure with its upright wall creates a vertical pathway for the secondary winding lead wires. By routing wires over the top edge of the back wall portion and turning them downwardly, the design enables devices to be positioned in the horizontal space between the transformer and contacts while maintaining the required insulation distance through vertical separation provided by the receptacle structure.
3Reliability
If the lead wires are wrapped by electrically insulative material, then insulation safety is improved, but the device complexity increases
Solution Approach 1:
The patent extracts the insulation function from the lead wires themselves and transfers it to the receptacle structure. The upright wall and back wall portion of the receptacle serve as the insulating barrier, eliminating the need to wrap lead wires with insulative material. This reduces manufacturing complexity while maintaining insulation safety, as the receptacle's structural walls provide the required insulation distance.
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 configuration effectively meets insulation safety codes while conserving circuit board space, allowing for more compact device designs by optimizing the insulation distance without the need for excessive lead wire extension.
Implementation Method 1
a receptacle for transformer comprises a bottom wall made of an electrically insulative material, and an upright wall made of an electrically insulative material
Data Source
AI summary
A receptacle includes an electrically insulative bottom wall, and an electrically insulative upright wall upwardly extended from the border of the bottom wall, the upright wall having a back wall portion corresponding to the rear side of the bottom wall. The bottom wall is adapted for mounting at a circuit board or electronic device to hold a transformer in such a manner that the lead wires of the primary winding of the transformer are disposed at the front side of the bottom wall; the insulated lead wires of the secondary winding of the transformer are extended over the top edge of the back wall portion and then turned downwardly and bonded to the circuit board or electronic device.