Coaxial Connector Shell With Threaded Barrel For Vibration Resistance
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Solution Overview
Problem
Existing coaxial connectors for car cameras face difficulties in assembly due to the use of sealant, which can lead to loosening under high vibration conditions, compromising the connection's reliability.
Innovation Solution
A coaxial connector assembly featuring a shell with integrated mating tubes and a cylindrical insulator, where the contact portions extend into separate tubes for secure retention, combined with a sealing ring and injection molding for enhanced sealing and stability, along with fixing columns for circuit board attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If sealant is used to fix the barrel in the outer housing, then the assembling process is simplified, but the connection reliability deteriorates under high vibration conditions
Solution Approach 1:
The patent replaces the chemical bonding method (sealant) with a mechanical locking system. The barrel is fixed to the outer housing through a threaded connection where the barrel has external threads that engage with internal threads in the outer housing, providing a mechanically secure connection that resists vibration without requiring sealant.
Solution Approach 2:
The patent divides the connection system into separate functional components: the barrel with external threads, the outer housing with internal threads, and the threaded connection interface. This segmentation allows each component to be manufactured independently and assembled through a standardized mechanical interface, improving both manufacturing ease and connection reliability.
2Stability of the object's composition
If sealant is used to fix the barrel in the outer housing, then the assembly is held together, but the assembly difficulty increases and loosening risk appears under vibration
Solution Approach 1:
The patent replaces the complex process of applying and curing sealant with a simple threaded mechanical connection. The barrel threads directly into the outer housing, providing immediate mechanical stability without requiring chemical adhesives, thereby simplifying the assembly operation while maintaining assembly stability.
3Device complexity
If the contact portions are retained in the insulator, then the electrical connection is maintained, but the contact reliability deteriorates under vibration
Solution Approach 1:
The patent employs a nested structure where the conductive contact is retained within the insulator, which is itself retained within the barrel assembly. The contact is held in the insulator through a retained structure that prevents displacement, creating a nested arrangement that maintains electrical connection reliability even under vibration by ensuring each component remains properly positioned within the next.
Data Source
AI summary
A coaxial connector includes: a shell integrally formed as a unitary piece; and an insulator and a conductive contact retained to the insulator, the contact having an upper contacting portion and a lower contacting portion extending out of the insulator, wherein the shell includes a first mating tube opening upwards, a second mating tube opening upward and disposed in the first mating tube, a receiving cavity opening downward, and a third mating tube disposed in the receiving space, the insulator is assembled and fixed in the shell, and the upper contacting portion is exposed to the second mating tube and the lower contacting portion is exposed to the third mating tube.