Razor Cartridge Spring Fingers Rinse-Through

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Solution Overview

Problem

Prior art razor cartridges with spring fingers for dynamically mounting blades often obstruct rinse-through due to the inward extension of spring fingers, preventing effective water flow between the blades.

Innovation Solution

The razor cartridge design incorporates L-shaped spring fingers extending in different directions from intermediate supports, reducing obstruction and enhancing rinse-through by positioning them between the ends of the cartridge frame.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If spring fingers extend from the ends of the cartridge frame inward to dynamically mount blades, then blade dynamic mounting is achieved, but rinse-through is obstructed at the ends of the cartridge

Engineering Contradiction:

Improveblade dynamic mountingVSAvoidrinse-through obstruction

Core Design Contradiction:

Adaptability or versatilityVSObject-generated harmful factors

Solution Approach 1:

The spring fingers are configured to extend in different directions (laterally outward from intermediate supports) rather than all extending inward from the same direction, creating spatial separation that allows rinse-through while maintaining blade mounting functionality

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

Intermediate supports are introduced as intermediary structures between the frame ends and the spring fingers, allowing the spring fingers to extend laterally outward from these intermediate points rather than directly from the frame ends, thereby resolving the conflict between mounting and rinse-through

Inventive Principle:

Principle #24Intermediary (Mediator)

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 configuration allows for improved rinse-through characteristics without compromising the dynamic mounting of blades, ensuring effective cleaning and maintenance of the razor cartridge.

Implementation Method 1

The spring fingers flex when forces are placed on the blade they are supporting. The flexing of the spring fingers permits limited movement of the blade.

Methodology Applied

Scientific EffectElasticity: Elasticity

Implementation Method 2

This configuration allows for improved rinse-through characteristics without compromising the dynamic mounting of blades, ensuring effective cleaning and maintenance of the razor cartridge.

Methodology Applied

Scientific EffectFluid flow:

Data Source

PatentEP1937444B1Blade mounting members for a razor cartridge

Publication Date: 2013.04.17 EVEREADY BATTERY CO INC

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AI summary

According to the present invention, a razor cartridge (12) a frame (16), at least two blades (18), a first group (19) of at least two spring fingers (20), and a second group (21) of at least two spring fingers (22). At least one spring finger (of the first group) extends toward the first end (54) of the frame and at least one other spring finger extends towards the second end (56) of the frame. At least one spring finger (of the second group) extends toward the second end of the frame and the cantilevered end of at least one other spring finger extends towards the first end of the frame. The first and second groups of spring fingers cooperate to dynamically mount the at least two blades in the frame such that each blade can move relative of the frame and the other blade (s) during normal shaving.