Coaxial Connector Built-In Capacitor Assembly

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Solution Overview

Problem

Conventional coaxial connectors with built-in capacitors require double crimping of lead wires, leading to reduced productivity in the assembly process.

Innovation Solution

A coaxial connector design that incorporates a capacitor function portion by sandwiching an inner dielectric between the core wire connection terminal and the inner terminal, eliminating the need for lead wires and allowing for easy assembly, miniaturization, and adjustable capacitance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a conventional capacitor with lead wires is used in the coaxial connector, then the capacitor function can be achieved, but the assembly process requires double crimping of lead wires which reduces productivity

Engineering Contradiction:
Improveassembly productivityVSAvoidassembly process complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent merges the capacitor structure with the connector terminals by using the core wire connection terminal and inner terminal as the capacitor electrodes directly, eliminating the need for separate lead wires and external capacitor components. This integration reduces the number of assembly steps and crimping operations required.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent extracts and eliminates the lead wires from the capacitor assembly, using only the essential terminal structures that are already part of the connector. This removal of unnecessary components simplifies the assembly process and improves productivity.

Inventive Principle:
Principle #2Taking out (Extraction)

2Volume of moving object

If a conventional capacitor with lead wires is used, then the capacitor function is achieved, but the connector size increases and miniaturization is hindered

Engineering Contradiction:
Improveconnector volumeVSAvoidassembly efficiency
Core Design Contradiction:
Volume of moving objectVSProductivity

Solution Approach 1:

The capacitor function is merged into the existing terminal structures of the connector, eliminating the need for separate capacitor components and lead wires. This integration achieves miniaturization while maintaining assembly efficiency.

Inventive Principle:
Principle #5Merging (Combining)

3Productivity

If the capacitor is built into the connector using terminal structures, then assembly is simplified and productivity enhanced, but the capacitance value becomes fixed and less adjustable

Engineering Contradiction:
Improveassembly productivityVSAvoidcapacitance adjustability
Core Design Contradiction:
ProductivityVSAdaptability or versatility

Solution Approach 1:

The patent enables capacitance adjustment by changing physical parameters such as the distance between terminals or the dielectric properties of the insulator material. This allows capacitance values to be modified without changing the overall connector structure or assembly process.

Inventive Principle:
Principle #35Parameter changes

4Ease of manufacture

If lead wires are used for capacitor connections, then the capacitor can be assembled into the connector, but the assembly process becomes more complex requiring multiple crimping operations

Engineering Contradiction:
Improveassembly easeVSAvoidconnector structure complexity
Core Design Contradiction:
Ease of manufactureVSDevice complexity

Solution Approach 1:

The patent removes lead wires from the connector structure, using only the essential terminal components. This extraction simplifies the overall connector structure while maintaining ease of manufacture through reduced assembly steps.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The capacitor electrodes are merged with the connector terminals, eliminating the need for separate lead wire connections and crimping operations. This merging simplifies both the structure and the manufacturing process.

Inventive Principle:
Principle #5Merging (Combining)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This design simplifies the assembly process, enhances productivity, and allows for easy adjustment of capacitor capacity by varying the dielectric material and thickness, while ensuring stable assembly and increased capacitor capacity through optimized electrode contact areas.

Implementation Method 1

an inner dielectric 40 that is sandwiched between a tip end portion of the core wire connection terminal 50 and a rear end portion of the inner terminal 30, and thereby composes a capacitor function portion 100 while using, as opposite electrodes, the tip end portion of the core wire connection terminal 50 and the rear end portion of the inner terminal 30

Methodology Applied
Scientific EffectCapacitance: Capacitance

Implementation Method 2

an inner dielectric 40 that is sandwiched between a tip end portion of the core wire connection terminal 50 and a rear end portion of the inner terminal 30

Methodology Applied
Scientific EffectDielectric: Dielectric

Data Source

PatentUS7670182B2Coaxial connector with built-in capacitor
Publication Date: 2010.03.02 YAZAKI CORP
  • US7670182B2 patent drawing
  • US7670182B2 patent drawing
  • US7670182B2 patent drawing

AI summary

A coaxial connector with a built-in capacitor includes: a core wire connection terminal having, on a rear end thereof, a core wire connection portion for connecting thereto a core wire of a coaxial cable; an inner terminal having, on a tip end thereof, a fitted/connected portion fitted and connected to an other party's terminal; an insulator holding the inner terminal while covering an outer circumference of the inner terminal, and having a holding hole of the core wire connection terminal on a rear end thereof; a shield terminal having, on a tip end thereof, a cylindrical shell portion that covers an outer circumference of the insulator, and having, on a rear end thereof, a shield conductor crimping portion for crimping and connecting thereto a shield conductor of the coaxial cable; and an inner dielectric that is sandwiched between a tip end portion of the core wire connection terminal and a rear end portion of the inner terminal, and thereby composes a capacitor function portion while using, as opposite electrodes, the tip end portion of the core wire connection terminal and the rear end portion of the inner terminal.