Fuse Element Locking Structure for Stable Horizontal Assembly
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Solution Overview
Problem
Conventional fuses used in automobile electric circuits face challenges in stabilizing the position and posture of multiple fuse elements within a casing, leading to displacement issues during assembly.
Innovation Solution
A fuse design featuring a fuse element with a coupling portion and holding portions in the casing, where the coupling portion is locked to a locking portion, stabilizing the position and posture of each fuse element, and allowing easy assembly by inserting the elements into the casing while it is in a horizontal position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple long fuse elements are accommodated in a casing, then the fuse can protect against overcurrent, but the position and posture of the fuse elements tend to be easily displaced
Solution Approach 1:
The coupling portion is preliminarily formed on the fuse element, and the locking portion is preliminarily formed on the holding portion before assembly. This preliminary preparation of locking structures ensures that when the fuse elements are inserted into the casing, they are automatically secured in the correct position and posture, preventing displacement during assembly and operation.
Solution Approach 2:
The coupling portion acts as an intermediary structure that connects the fuse element to the holding portion of the casing. This intermediate locking mechanism mediates between the fuse element and the casing, securing the fuse element in place and preventing displacement while maintaining the integrity of the overall structure.
2Ease of manufacture
If fuse elements are inserted into the casing in a horizontal position, then assembly is easier, but gravity may cause displacement of the fuse elements
Solution Approach 1:
The locking portion is preliminarily formed on the holding portion at the appropriate location before assembly. This preliminary preparation ensures that when fuse elements are inserted horizontally into the casing, the locking structure is already in place to immediately secure the fuse element, preventing gravity-induced displacement during the assembly process.
Solution Approach 2:
The locking structure provides preliminary anti-action against the gravitational force that would cause the fuse elements to displace during horizontal assembly. By pre-positioning the locking portion to engage with the coupling portion, the design counteracts the harmful effect of gravity before displacement can occur.
Data Source
AI summary
Therefore, the invention of the present application provides a fuse in which a position and a posture of a fuse element are easily stabilized and which is easily assembled, and a method for manufacturing the fuse. A fuse including a fuse element having a fusing portion; and a casing accommodating the fusing portion; where the fuse element has a long shape extending in a longitudinal direction of the casing and at least two or more fuse elements are provided; the fuse element has one end portion side coupled to each other by a coupling portion; a first holding portion that holds the fuse element is provided in one opening of the casing; and a locking portion that locks the coupling portion of the fuse element is provided in the first holding portion.