Razor Connector Angled Locking Element Universal Handle Compatibility

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Solution Overview

Problem

Existing razor designs lack flexibility to accommodate different handle designs and materials, limiting customization options and ergonomics, and often require specific connection mechanisms that prevent compatibility with various razor handles.

Innovation Solution

A connector system featuring a retracting shaft with a locking element that expands in an angled direction, allowing for a secure and adaptable connection between a blade assembly and a razor handle of any shape, feature, or material, using a friction-locking connection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of repair

If a blade assembly is removably attached to a razor handle using existing connection mechanisms (snap-fit, threaded, or magnetic), then the blade assembly can be replaced when worn out, but the blade assembly becomes incompatible with razor handles of different models

Engineering Contradiction:
Improveblade assembly replaceabilityVSAvoidcompatibility with different razor handle models
Core Design Contradiction:
Ease of repairVSAdaptability or versatility

Solution Approach 1:

The connector is designed with a standardized interface that can be universally applied across different razor handle models. The connector body with its specific geometric features (cylindrical shape, longitudinal groove, engagement protrusions) creates a universal connection system that works with multiple handle designs, allowing the same blade assembly to be compatible with various razor models while maintaining secure attachment and easy replaceability

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Reliability

If razor designs are optimized for specific handle shapes and materials, then the connection mechanism can be secure and reliable, but the design lacks flexibility to accommodate different handle designs and materials

Engineering Contradiction:
Improveconnection securityVSAvoidaccommodation of various handle designs and materials
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The connection system is divided into separate functional components: the connector body, the retracting shaft, and the locking element. This segmentation allows each component to be optimized independently - the connector body provides universal compatibility, the retracting shaft enables controlled engagement, and the locking element ensures secure connection. This modular approach maintains connection reliability while adapting to different handle designs and materials

Inventive Principle:
Principle #1Segmentation

3Strength

If a connector uses a locking mechanism to securely attach the blade assembly, then the connection is robust, but the connector structure becomes more complex

Engineering Contradiction:
Improveconnection robustnessVSAvoidconnector structural complexity
Core Design Contradiction:
StrengthVSDevice complexity

Solution Approach 1:

The locking element is designed to automatically engage and lock when the connector is assembled with the razor handle. The retracting shaft, when actuated, causes the locking element to expand in an angled direction that naturally interfaces with the handle's cavity, creating a self-locking mechanism. This self-service approach provides robust connection strength while minimizing the need for additional complex locking components or assembly steps

Inventive Principle:
Principle #25Self-service

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 connector system enables easy replacement of blade assemblies and provides compatibility with various handle designs, enhancing user convenience, flexibility, and customization options while ensuring a secure and robust connection.

Implementation Method 1

The connector is designed to couple the blade assembly to the razor handle by a non-positively locking connection, more specifically by a friction-locking connection

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentEP4570460A1Razor connector
Publication Date: 2025.06.18 BIC VIOLEX SINGLE MEMBER SA
  • EP4570460A1 patent drawingFigure 1
  • EP4570460A1 patent drawingFigure 2
  • EP4570460A1 patent drawingFigure 3A~3B

AI summary

A connector (10,10',10") for engaging a blade assembly (20) to a razor handle (30,30',30") comprising a connector body (100, 100', 100") extending between a handle engaging portion (300, 300', 300") and a blade assembly engaging portion (200) along a longitudinal axis (A, A', A") wherein the handle engaging portion (300, 300', 300") comprises a retracting shaft (310, 310', 310"), an actuator (320, 320',320") and a locking element (330,330',330") coupled to the retracting shaft (310,310',310") wherein the actuator (320,320',320") is configured to move the retracting shaft (310,310',310") such that the locking element (330,330',330"), expands in an angled direction (b) with respect to the longitudinal axis (A, A',A").