Semiconductor Device Nut Housing Alignment via Protrusion Guides
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Solution Overview
Problem
The mountability of nut housing members in semiconductor devices is poor due to the reduced stiffness of control terminals, leading to positional deviations and assembly challenges.
Innovation Solution
A semiconductor device design featuring a laminated substrate with a case having specific opening portions and a nut housing member with protrusions and a concavity, allowing for improved insertion and alignment of the nut housing member under the control terminal, enhancing the assembly process and positional accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the control terminal beam is fixed at the one leg portion, then the stiffness of the beam is reduced, but a positional deviation of the surface of the control terminal from the case tends to occur
Solution Approach 1:
The case is divided into multiple sections: a body portion, a first protrusion extending from the body, and a second protrusion extending from the body. This segmentation allows each part to serve a specific function - the body provides the housing structure, while the protrusions provide alignment and positioning features that ensure precise placement of the control terminal without requiring complex fixing mechanisms.
Solution Approach 2:
The case structure itself provides the positioning and alignment functions through its integrated protrusions, eliminating the need for separate fixing components or complex assembly procedures. The first protrusion aligns with the control terminal's first position and the second protrusion aligns with the second position, allowing the control terminal to be self-positioned during assembly.
2Manufacturing precision
If the nut housing member is inserted through the opening portion in the side surface of the case, then the control terminal can be positioned, but the nut housing member may not be inserted smoothly into the case
Solution Approach 1:
The first protrusion and second protrusion act as intermediary alignment features between the case and the control terminal. These protrusions guide the control terminal into the correct position as it is inserted, ensuring smooth assembly without requiring precise manual alignment or complex positioning mechanisms.
Solution Approach 2:
The case is pre-formed with the first protrusion and second protrusion that create alignment guides before the control terminal is inserted. This preliminary structuring of the case ensures that the control terminal automatically aligns with the correct position during insertion, making the assembly process smoother and more reliable.
Data Source
AI summary
When a nut housing member is inserted from a first opening portion into a case (terminal housing area) in a semiconductor device, first and second protrusions of the nut housing member slide on and pass through the first and second opening portions. Ultimately, the nut housing member is housed in the case (terminal housing area), with the first protrusion being in contact with a lower end of the second opening portion and the second protrusion being in contact with a lower end of the first opening portion. Even if the nut housing member is not inserted in parallel with the terminal housing area, the forefront does not hit against a first beam. Therefore, the nut housing member is inserted stably and housed reliably in the terminal housing area of the case, and the assemblability of the nut housing member with respect to the case is improved.