Electrical Connection Box Angled Insertion Guide
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Solution Overview
Problem
The existing electrical connection boxes face challenges in ensuring unfailing engagement of engagement portions when the block is inserted into the housing at a direction different from the preset insertion direction, due to variations in the worker's gripping position and the density of electronic components.
Innovation Solution
The electrical connection box incorporates a design with first and second engagement portions, each featuring an engagement piece and guide piece, along with an inclined surface on the guide piece or guide receiving portion, allowing for guidance and engagement even when the block is inserted at an angle, ensuring secure fitting regardless of the insertion direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the block is inserted manually by a worker, then the assembly process is flexible and adaptable to different component densities, but the insertion direction may be inclined and engagement portions may not be reliably engaged
Solution Approach 1:
The guide piece and guide receiving portion with inclined surfaces perform preliminary guidance action before the engagement piece and engagement receiving portion make contact. The inclined surface starts guiding the guide piece in the insertion direction before the engagement piece contacts the engagement receiving portion, ensuring proper alignment is established in advance to prevent insertion direction errors
Solution Approach 2:
The guide piece and guide receiving portion act as intermediary elements between the block and housing during insertion. This intermediary mechanism with inclined surfaces facilitates smooth entry and proper orientation of the block, mediating the transition from manual insertion to precise engagement without requiring perfect initial alignment
2Stability of the object's composition
If the engagement portions are positioned at both ends of the block, then the block is securely fitted to the housing, but it becomes more difficult to engage all portions when insertion direction is inclined
Solution Approach 1:
The inclined surface on the guide piece or guide receiving portion performs preliminary alignment action before the engagement portions at both ends make contact. This preliminary guidance ensures that even when insertion starts at an angle, both engagement portions will be properly aligned and engaged sequentially
Solution Approach 2:
The inclined surface creates a curved guidance path that accommodates angular insertion. By forming the inclined surface by cutting out an end where the guide piece and guide receiving portion face each other, the design allows the block to self-correct its insertion angle and follow a curved path to proper alignment
Data Source
AI summary
An electrical connection box includes a block that houses a plurality of electronic components, a housing body in which an internal space for housing the block is formed, and engagement portions that are provided between the block and the housing body and fits the block to the housing body. The engagement portions include a first engagement portion corresponding to the one direction end of the block in a specific direction and a second engagement portion corresponding to the other direction end of the block in the specific direction. In the first engagement portion, an inclined surface of the guide receiving portion is formed. When the block is inserted into the housing body in the insertion direction, the inclined surface is formed by cutting out an end where the guide receiving portion faces a guide piece in the insertion direction.