Christmas Lamp Holder Pressing Structure for Wire Tensile Stability

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Solution Overview

Problem

Existing Christmas lamp holders suffer from poor tensile strength, instability, and a tendency to shift, necessitating an improved design for stable fixation and enhanced tensile effect.

Innovation Solution

The lamp holder design incorporates first and second pressing protrusions in the grooves of the pressing block to press the outer insulation layer of the electrical wire, ensuring stable fixation and improved tensile strength.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If the wire is pressed through the grooves of the pressing block, then the lamp holder can be assembled, but the tensile strength is poor and the stability is insufficient

Engineering Contradiction:
Improvetensile strengthVSAvoidstability
Core Design Contradiction:
StrengthVSReliability

Solution Approach 1:

The pressing block features localized pressing protrusions at specific positions within the grooves, creating concentrated pressure points on the wire's insulation layer. This local quality enhancement provides focused mechanical grip exactly where needed, improving tensile strength and preventing wire pull-out without requiring overall structural complexity

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The pressing protrusions extend into the wire insulation layer from the pressing block surface, adding a vertical dimension to the pressing mechanism. This dimensional extension allows the protrusions to penetrate and anchor into the insulation layer, creating mechanical interlocking that significantly enhances both tensile strength and stability

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Device complexity

If the lamp holder uses a simple groove structure, then the device complexity is low, but the lamp holder shifts easily and fixation is unstable

Engineering Contradiction:
Improvestructure complexityVSAvoidfixation stability
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

Rather than complicating the overall groove structure, the invention introduces localized pressing protrusions at specific positions within the grooves. This selective enhancement maintains the simplicity of the basic groove design while adding fixation capability exactly where mechanical grip is needed, preventing shifting without overall structural complexity

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The pressing block's grooves are segmented into functional zones: smooth pressing sections for general compression and protrusion sections for mechanical anchoring. This segmentation allows each zone to perform its specific function optimally, with protrusions providing anti-shift capability while smooth sections maintain wire compression, achieving stable fixation without complex overall structure

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS12535198B2Structure of Christmas lamp holder
Publication Date: 2026.01.27 CHEN TSE-CHING
  • US12535198B2 patent drawing
  • US12535198B2 patent drawing
  • US12535198B2 patent drawing

AI summary

An improved structure of Christmas lamp holder including a lamp cover and a lamp holder body is so configured that when the lamp cover and the lamp holder body are engaged and fixed, in addition to pressing the electrical wire through the pressing block of the lamp cover, at the same time, the first and second pressing protrusions of the pressing block of the lamp cover press the outer insulation layer of the electrical wire to achieve a more stable pressing fixation effect and increase the load-bearing tensile force to obtain a better tensile effect.