Vehicle Junction Box Fixation for Component Tolerance Absorption
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Solution Overview
Problem
Existing electrical junction boxes do not adequately account for the tolerance in the external dimensions of electric components, leading to unreliable fixation and potential vibration issues when housed within the box.
Innovation Solution
Incorporating a slit in the fixation member of the electrical junction box to absorb the tolerance of electric components, combined with rib structures and reinforcing portions to securely fasten and stabilize the components, ensuring reliable fixation and vibration suppression.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixation member is used to fix the electric component to the casing, then the electric component is securely held in place, but the tolerance in external dimensions of the electric component causes unreliable fixation and potential vibration issues
Solution Approach 1:
The fixation member incorporates a slit that allows it to elastically deform and adapt to variations in the external dimensions of the electric component. This parameter change in the fixation member's shape enables it to accommodate tolerance ranges while maintaining secure fixation, resolving the contradiction between fixation reliability and manufacturing precision.
Solution Approach 2:
The fixation member transitions from a rigid structure to a dynamic one by incorporating a slit, allowing it to flex and adjust to the electric component's dimensional variations. This dynamic capability enables the fixation member to maintain reliable fixation despite manufacturing tolerances in the electric component's external dimensions.
2Strength
If the fixation member is made rigid to ensure stable fixation, then the electric component is firmly held, but it cannot absorb tolerance variations in the electric component's external dimensions
Solution Approach 1:
The fixation member incorporates a slit that allows it to elastically deform and adapt to variations in the external dimensions of the electric component. This parameter change in the fixation member's shape enables it to accommodate tolerance ranges while maintaining secure fixation, resolving the contradiction between fixation reliability and manufacturing precision.
Solution Approach 2:
The fixation member transitions from a rigid structure to a dynamic one by incorporating a slit, allowing it to flex and adjust to the electric component's dimensional variations. This dynamic capability enables the fixation member to maintain reliable fixation despite manufacturing tolerances in the electric component's external dimensions.
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 allows for effective absorption of tolerance variations in electric components, ensuring reliable fixation and reduced vibration, even during vehicle travel, thereby enhancing the stability and performance of the electrical junction box.
Implementation Method 1
a slit for absorbing a tolerance associated with external dimensions of the electric component is provided in the fixation member
Data Source
AI summary
Provided is an electrical junction box capable of housing an electric component while absorbing the tolerance of the electric component. The electrical junction box is an electrical junction box that is to be mounted in a vehicle, including: a casing that forms an outer shell; and a fixation member that fixes, to the casing, an electric component that is to be electrically connected to a vehicle-mounted load or an electricity storage device mounted in the vehicle, wherein a slit for absorbing a tolerance associated with external dimensions of the electric component is provided in the fixation member.