Razor Handle With Rotating Fixing Pin for Component Separation

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Solution Overview

Problem

Existing wet razors made primarily of plastic materials pose environmental challenges due to their disposal issues, as components made of eco-friendly materials are difficult to separate and replace, hindering recycling and reuse.

Innovation Solution

A razor handle design featuring a grip portion with a hollow portion, a body portion with a latch portion and fixing pin mechanism that allows for easy separation and replacement by rotating the fixing pin around a rotational axis, facilitating the use of eco-friendly materials.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If eco-friendly materials are used to manufacture razor components, then environmental friendliness is improved, but separability and replaceability of components deteriorate

Engineering Contradiction:
Improveenvironmental impactVSAvoidseparability of components
Core Design Contradiction:
Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The razor handle is divided into separable components: a grip portion made of eco-friendly material and a body portion containing the fixing mechanism. The fixing pin and latch portion enable the grip portion to be detached from the body portion, allowing the eco-friendly component to be separated for proper disposal or recycling while maintaining ease of separation through the mechanical coupling mechanism.

Inventive Principle:
Principle #1Segmentation

2Ease of manufacture

If traditional plastic materials are used for razor handle, then ease of manufacture and component integration are improved, but environmental compatibility deteriorates

Engineering Contradiction:
Improvecomponent integrationVSAvoidenvironmental compatibility
Core Design Contradiction:
Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The razor handle is segmented into a grip portion (eco-friendly material) and a body portion (containing mechanical components). This segmentation allows the use of environmentally friendly materials for the grip portion while maintaining traditional materials for the functional body portion, thus improving environmental compatibility without compromising manufacturing ease.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The razor handle employs a composite structure combining eco-friendly materials (such as wood, bamboo, or biodegradable polymers) for the grip portion with traditional materials for the body portion. This composite approach allows each component to be optimized for its specific function while addressing environmental concerns.

Inventive Principle:
Principle #40Composite materials

3Ease of manufacture

If disposable razor design is used, then ease of manufacture and initial cost are improved, but waste generation and recyclability deteriorate

Engineering Contradiction:
Improveproduction simplicityVSAvoidwaste generation
Core Design Contradiction:
Ease of manufactureVSLoss of substance

Solution Approach 1:

The razor is designed with separable components where the grip portion can be detached from the body portion. This segmentation enables the reusable body portion to be retained while the grip portion can be replaced or disposed of, reducing overall waste generation compared to completely disposable razors.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The design allows the body portion containing the fixing mechanism to be recovered and reused, while only the grip portion needs to be discarded or replaced. This selective discarding and recovering approach reduces waste generation and improves recyclability compared to disposable razor designs.

Inventive Principle:
Principle #34Discarding and recovering

Data Source

PatentEP4613448A1Razor handle
Publication Date: 2025.09.10 DORCO CO LTD
  • EP4613448A1 patent drawingFigure 1
  • EP4613448A1 patent drawingFigure 2
  • EP4613448A1 patent drawingFigure 3

AI summary

According to an embodiment of the present disclosure, provided is a razor handle comprising: an elongated-type grip portion having a hollow portion; a body portion comprising a latch portion, wherein at least of the body portion configured to be accommodated in the hollow portion; a head portion configured to be connected to a razor cartridge, the head portion connected to one side of the body portion; and a fixing pin configured to be coupled to the other side of the body portion, wherein when the fixing pin is positioned on the other side of the body portion, the fixing pin is configured to be latch-coupled with the latch portion by rotating in a first direction around a rotational axis passing through the body portion and parallel to a longitudinal direction of the body portion.