Lever-Type Connector Guide Groove Assembly Alignment
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Solution Overview
Problem
The existing lever-type connectors face inefficiencies in assembly due to the difficulty in visually confirming the positions of support shafts, leading to poor work efficiency and potential interference between the operating portion and the wire bundle during assembly.
Innovation Solution
The design incorporates a guide groove in the lever's arm with a retracted portion that guides the support shaft to the bearing hole, allowing the operating portion to be displaced away from the wire bundle, preventing interference and ensuring proper alignment, while also featuring a reverse rotation restricting projection to prevent improper rotation and separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If guide grooves are formed in the arms to guide support shafts, then assembly alignment is improved, but the operating portion may interfere with the wire bundle during assembly
Solution Approach 1:
The guide groove is segmented into two functional portions: a guiding portion that provides alignment and a retracted portion that allows the operating portion to move away from the wire bundle path, eliminating interference while maintaining alignment functionality
Solution Approach 2:
The guide groove extends in the width direction of the arm, creating a lateral dimension for the support shaft movement path that allows the operating portion to clear the wire bundle while still guiding the support shaft to the bearing hole
2Ease of manufacture
If the operating portion approaches the wire draw-out surface during assembly, then the lever can be assembled with the housing, but interference with the wire bundle occurs
Solution Approach 1:
The guide groove provides a dynamic movement path for the support shaft, allowing the operating portion to first approach the wire draw-out surface for assembly, then retract laterally through the retracted portion to clear the wire bundle, making the assembly process adaptable to the presence of the wire bundle
3Manufacturing precision
If the guide groove has a narrow guiding opening, then positional relationship is specified and improper assembly is prevented, but assembly resistance increases
Solution Approach 1:
The guide groove is divided into a guiding portion with narrow opening that specifies positional relationship and prevents improper assembly, and a retracted portion with wider cross-section that reduces assembly resistance by allowing lateral movement clearance
Solution Approach 2:
Different portions of the guide groove have different cross-sectional characteristics: the guiding portion has a narrow opening for precision alignment while the retracted portion has a wider cross-section for reduced resistance, optimizing both precision and ease of assembly in their respective functional zones
Data Source
AI summary
A lever-type connector (F) includes a housing (10) having a wire bundle (27) drawn out from a wire draw-out surface (13). Guide grooves (36) formed in arms (31) of a lever (30) and are configured to guide support shafts (26) of the housing (10) to bearing holes (34) of the arms (31) when assembling the lever (30) with the housing (10). Retracted portions (39) are formed in the guide grooves (36) an are configured to allow an operating portion (32) to be displaced away from the wire bundle (27) when assembling the lever (30) with the housing (10).