Elastic Conductive Member Grounding for Circuit Boards
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing image forming apparatuses face challenges in maintaining reliable grounding of electronic boards, which can lead to short-circuits due to peeling off of conductive members from adhesive tapes over time, compromising the electrical connection between the conductive components and metal frames.
Innovation Solution
A circuit board device incorporating a conductive component, a metal frame, and elastic conductive members, with a sheet-shaped pressing member that presses the conductive members against the conductive component and metal frame, ensuring a stable and secure electrical connection through a resilient force that counteracts adhesive degradation and prevents peeling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If adhesive tape is used to attach conductive members to electronic boards, then ease of assembly is improved, but reliability deteriorates over time due to peeling off
Solution Approach 1:
The conductive member is designed with elastic properties, allowing it to dynamically adapt to thermal expansion and contraction of the electronic board. The elastic member can flex and return to its original shape, maintaining continuous contact between the conductive component and the conductive member despite dimensional changes over time, thereby preventing peeling and maintaining reliable electrical connection.
Solution Approach 2:
The patent utilizes changes in the physical parameters of the elastic member, specifically its elasticity and friction characteristics. By selecting materials with appropriate elastic modulus and friction coefficients, the conductive member maintains optimal contact pressure and electrical conductivity under varying operating conditions, preventing degradation of the electrical connection.
2Ease of operation
If conductive members are attached using adhesive, then assembly simplicity is improved, but contact stability deteriorates due to peeling
Solution Approach 1:
The patent replaces the adhesive-based mechanical attachment system with an elastic contact system. The conductive member, made of elastic material, maintains contact through elastic deformation and friction rather than adhesive bonding. This substitution eliminates the peeling issue inherent in adhesive bonds while maintaining assembly simplicity through snap-fit or press-fit mechanisms.
Solution Approach 2:
The elastic conductive member dynamically adjusts to thermal and mechanical variations, maintaining stable contact through its elastic properties. The member can expand and contract with the electronic board, ensuring continuous electrical contact without the peeling problems associated with rigid adhesive bonds.
3Reliability
If rigid connection is used for grounding, then electrical conductivity is improved, but adaptability to thermal expansion deteriorates
Solution Approach 1:
The conductive member is designed as an elastic component that can dynamically respond to thermal expansion and contraction of the electronic board. This elastic member maintains continuous electrical contact by flexing and returning to its original shape, providing both reliable conductivity and adaptability to dimensional changes, unlike rigid connections that would crack or disconnect.
Solution Approach 2:
The patent utilizes the elastic properties of the conductive member to maintain optimal electrical contact under varying thermal conditions. By selecting materials with appropriate elastic modulus and thermal expansion coefficients, the member adapts to temperature-induced dimensional changes while maintaining stable electrical conductivity.
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 prevents short-circuits by maintaining a consistent frictional force between the conductive members and the electronic components, ensuring reliable grounding and reducing the likelihood of conductive members falling and contacting surrounding components.
Implementation Method 1
a sheet-shaped pressing member that presses the conductive members against the conductive component and metal frame, ensuring a stable and secure electrical connection through a resilient force
Implementation Method 2
maintaining a consistent frictional force between the conductive members and the electronic components
Implementation Method 3
A circuit board device incorporating a conductive component, a metal frame, and elastic conductive members
Data Source
AI summary
A circuit board device includes a conductive component, a metal frame, a conductive member, and a pressing member. The conductive component is disposed on an electronic board in a first direction and has a board face. The metal frame has a frame face intersecting the board face of the electronic board. The conductive member is disposed over the conductive component in the first direction and electrically connected to each of the conductive component and the metal frame. The pressing member presses the conductive member against the conductive component in the first direction.