Jig With Movable Guide Members For Press-Fit Terminal Buckling
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Solution Overview
Problem
Existing press-fit terminal installation methods often result in buckling of press-fit sections during the installation process due to the lack of effective guidance and alignment, leading to damage and interruptions in the press-fitting process.
Innovation Solution
A jig and press-fitting device with movable guide members and insertion punches that provide comb-teeth shaped guide grooves and punch grooves to align and guide the press-fit terminals, preventing buckling by allowing upward and downward movement to ensure proper alignment and insertion without damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If press-fit terminals are pressed to fit into through-holes by pressing the shoulders, then the press-fit terminals can be installed to the substrate, but the press-fit terminals buckle and damage at the middle due to long length
Solution Approach 1:
The patent introduces a jig as an intermediary device that includes guide members with guide grooves and pressing members with pressing surfaces. The guide grooves guide the press-fit terminals during insertion, while the pressing surfaces apply controlled force to the shoulders. This intermediary system enables successful installation without buckling by coordinating guidance and pressing functions.
Solution Approach 2:
The jig is segmented into distinct functional components: guide members with comb-teeth shaped guide grooves for alignment and guidance, and pressing members with pressing surfaces for applying force to the shoulders. This segmentation allows each component to perform its specific function optimally, preventing buckling while enabling installation.
2Manufacturing precision
If the press-fit terminals are aligned by the jig main body, then the press-fit contacts are effectively press-fitted without buckling, but the press-fit sections are not guided during insertion into holes
Solution Approach 1:
The guide members serve multiple functions: they provide guide grooves for aligning the distal ends of press-fit terminals (alignment function) and simultaneously provide guidance during insertion into through-holes (guidance function). The comb-teeth shaped structure with protrusions achieves both alignment and guidance in a single component, resolving the contradiction between alignment precision and insertion guidance.
Data Source
AI summary
Provided are a jig and a press-fitting device that are capable of suppressing buckling during the press-fitting process. The jig has a jig unit in which a plurality of metal plate-shaped bodies for installing a press-fit terminal onto a substrate are combined. The jig unit includes a movable guide member having a guide groove through which a terminal main body can pass; an insertion punch having a punch groove corresponding to the guide groove, and having a pressing section formed therein; and a rear surface plate body. The movable guide member and the rear surface plate body are attached so as to be vertically movable relative to the insertion punch and, while the press-fit section is being press-fitted into the substrate by the insertion punch, the movable guide member and the rear surface plate body move upward relative to the insertion punch after the lower sides thereof abut to the substrate.