Plug Biting Convex Portion for Cable Slippage
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Electronic plucked string instruments face issues with cable slippage and displacement due to external loads, particularly tensile forces, leading to loose fixation and potential solder breakage, as existing plugs lack effective mechanisms to secure cables under strong or repeated tension.
Innovation Solution
A plug design featuring a cylindrical attachment sleeve with a biting convex portion on its inner surface, which engages with the cable's insulated outer sheath and is secured by a set screw, combined with solder bonding to the shielded conductor layer for enhanced electrical conductivity and mechanical stability, preventing cable slippage and maintaining electrostatic shielding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a flat inner peripheral surface of the sleeve is used for cable contact, then the structure is simple, but the cable slips and displaces under tensile force
Solution Approach 1:
The inner peripheral surface of the sleeve is designed with localized biting convex portions that create high-friction contact points with the cable's insulated outer sheath. These convex portions are strategically positioned to engage with the cable surface, providing enhanced grip and preventing slippage under tensile force, while the rest of the sleeve maintains a simple cylindrical structure.
2Strength
If multiple set screws are used to fix the cable, then the fixation strength is improved, but the device complexity increases
Solution Approach 1:
Instead of distributing multiple set screws around the sleeve, the invention concentrates the fixation function at specific locations by providing biting convex portions at targeted positions on the inner peripheral surface. This allows a single set screw to effectively secure the cable by compressing it against these localized high-friction contact points, maintaining strong fixation while minimizing the number of fastening components.
3Adaptability or versatility
If the cable is allowed to slip under tensile force, then the structure remains flexible, but the soldered portion breaks and cable falls out
Solution Approach 1:
The biting convex portions on the sleeve's inner peripheral surface create preliminary resistance to cable movement before tensile force can cause slippage. By establishing high-friction contact points that engage with the insulated outer sheath, the structure proactively prevents the cable from displacing axially, thereby protecting the soldered connection from breaking and the cable from falling out of the plug.
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
The solution effectively suppresses cable slippage and set screw slack, ensuring long-term reliable electrical connection and electrostatic shielding, even under strong tensile forces and torsional moments, by integrating a biting convex portion and solder bonding in the plug's design.
Implementation Method 1
a set screw which is screwed into a peripheral wall portion of the attachment sleeve in such a manner that a leading end comes into contact with an insulated outer sheath of the cable while passing through the attachment sleeve in a radial direction, and clamps the cable with respect to a peripheral wall portion of the cable on the basis of a screwing compression force caused by the screwing
Implementation Method 2
a biting convex portion biting into the insulated outer sheath while receiving the screwing compression force of the set screw via the cable is integrally formed on an inner peripheral surface of the attachment sleeve
Implementation Method 3
combined with solder bonding to the shielded conductor layer for enhanced electrical conductivity and mechanical stability
Data Source
AI summary
The invention provides a plug for an electronic plucked string instrument having a structure for fixing with a set screw by inserting a cable into a sleeve in a plug side. A biting convex portion biting into an insulated outer sheath while receiving a screwing compression force of a set screw via a cable is formed integrally on an inner peripheral surface of an attachment sleeve in a plug side along a peripheral direction of a sleeve inner peripheral surface. The biting convex portion formed on the inner peripheral surface of the attachment sleeve in the plug bites into the insulated outer sheath of the cable. Thus, a slip displacement against a sleeve inner surface of the cable is inhibited by the biting convex portion and a slack of the set screw can be effectively suppressed even in a case where a stronger tensile force is applied to the cable.