Fuse Unit Battery Cover Assembly via Abutment Rib
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Solution Overview
Problem
The existing fuse units for batteries face poor assemblability issues due to interference from the battery when the unit body is fixed at an inclined position, requiring the battery terminal to be unfastened, repositioned, and refastened for proper assembly of the battery cover.
Innovation Solution
Incorporating battery abutment ribs on the unit body that secure a mounting space for the battery cover, allowing for secure assembly even when the unit body is fixed at an inclined position, eliminating the need to unfasten and reposition the battery terminal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the unit body is fixed to the battery post via the battery terminal, then the fuse unit can be installed in the peripheral space of the battery, but the unit body may be fixed at an inclined position causing interference with the battery cover assembly
Solution Approach 1:
The battery abutment rib is pre-formed on the unit body during manufacturing, creating a positioning feature that automatically guides the unit body into the correct orientation during assembly. This preliminary structural preparation eliminates the need for post-installation adjustment of the unit body position.
Solution Approach 2:
The battery abutment rib acts as an intermediary element between the unit body and the battery side surface. It mediates the positioning relationship by providing a predetermined abutment surface that ensures proper orientation of the unit body relative to the battery, preventing interference with the battery cover assembly.
2Reliability
If the unit body is fixed at an inclined position, then the battery terminal connection is established, but the battery cover cannot be assembled due to interference from the battery
Solution Approach 1:
The battery abutment rib provides a localized positioning function at a specific location on the unit body (the portion facing the battery side surface). This local structural feature ensures proper orientation without affecting the overall connection reliability established by the battery terminal.
Solution Approach 2:
The solution adds a positional constraint in the dimensional space by introducing the battery abutment rib that contacts the battery side surface. This creates a new degree of freedom control that prevents the unit body from rotating into an inclined position, ensuring the battery cover can be assembled without interference.
3Ease of operation
If the unit body is correctly located at a predetermined turn position, then the battery cover can be assembled, but the battery terminal must be unfastened and refastened
Solution Approach 1:
The battery abutment rib is pre-formed on the unit body during manufacturing, creating a positioning feature that automatically guides the unit body into the correct orientation during assembly. This preliminary structural preparation eliminates the need for post-installation adjustment of the unit body position.
Solution Approach 2:
The battery abutment rib enables the unit body to self-position during assembly through automatic engagement with the battery side surface. The structure serves itself by providing inherent positioning guidance, eliminating the need for manual intervention to adjust and refasten the battery terminal.
Data Source
AI summary
A fuse unit (1) includes a unit body (10) fixed to a battery post (3) of a battery (2) via a battery terminal (4) and disposed along a top surface (2a) and a side surface (2b) of the battery (2), and a battery cover (20) mounted to the unit body (10) and configured to cover an outer periphery of the unit body (10). The unit body (10) has a battery abutment rib (17) at a portion of the unit body (10) facing the side surface (2b) of the battery (2). The battery abutment rib (17) is configured to secure a mounting space for the battery cover (20).