Blade Set with Transmitting Member for Hair Cutting Appliance

Solution Overview

Problem

Existing hair cutting devices, such as razors and trimmers, are not well-suited for both shaving and trimming operations due to design limitations, leading to user discomfort, performance issues, and increased manufacturing costs, with combined devices being heavy, complex, and requiring multiple cutting blade sets.

Innovation Solution

A blade set for hair cutting appliances featuring a stationary blade with a guide slot and a movable cutter blade, where the movable blade is secured by a transmitting member that is engaged differently from its insertion direction, allowing for a loss-proof mounting without additional securing elements, enabling both shaving and trimming with improved user experience and manufacturing efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a combined shaving and trimming device is used, then both shaving and trimming functions are available, but the device becomes heavy and complex requiring multiple cutting blade sets

Engineering Contradiction:

Improveshaving and trimming functionalityVSAvoiddevice structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The blade set is designed to perform both shaving and trimming functions using a single integrated structure. The stationary blade and movable cutter blade arrangement can accommodate different operating modes without requiring separate blade sets, making the device universal for both shaving and trimming applications

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent combines the shaving and trimming cutting mechanisms into a single integrated blade set. By merging the functional elements into one unified structure with a stationary blade and movable cutter blade, the device eliminates the need for multiple separate blade sets, reducing overall device complexity and weight

Inventive Principle:

Principle #5Merging (Combining)

2Adaptability or versatility

If a combined shaving and trimming device is used, then both shaving and trimming functions are available, but the device weight increases

Engineering Contradiction:

Improveshaving and trimming functionalityVSAvoiddevice weight

Core Design Contradiction:

Adaptability or versatilityVSWeight of moving object

Solution Approach 1:

The blade set is designed to perform both shaving and trimming functions using a single integrated structure. The stationary blade and movable cutter blade arrangement can accommodate different operating modes without requiring separate blade sets, making the device universal for both shaving and trimming applications

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent combines the shaving and trimming cutting mechanisms into a single integrated blade set. By merging the functional elements into one unified structure with a stationary blade and movable cutter blade, the device eliminates the need for multiple separate blade sets, reducing overall device complexity and weight

Inventive Principle:

Principle #5Merging (Combining)

3Reliability

If additional securing elements are used to mount the movable blade, then the mounting becomes more secure, but the device complexity and manufacturing cost increase

Engineering Contradiction:

Improvemounting securityVSAvoidnumber of components

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The transmitting member is designed to serve dual functions: it transmits the cutting motion from the drive mechanism to the movable cutter blade, and simultaneously acts as a securing element that mounts the movable blade to the stationary blade. This self-service design eliminates the need for separate securing components, reducing device complexity and manufacturing cost while maintaining reliable mounting

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS10124498B2Blade set, hair cutting appliance, and related manufacturing method

Publication Date: 2018.11.13 KONINKLIJKE PHILIPS NV

AI summary

The present invention relates to a hair cutting appliance and to a blade set for a hair cutting appliance including a blade set having a stationary blade constructed having a first wall portion and a second wall portion that define therebetween a guide slot, a movable cutter blade received at the guide slot, and a transmitting member configured to be engaged by a driving member, and to actuate the movable cutter blade relative to the stationary blade, wherein the movable cutter blade is laterally inserted into the guide slot, wherein the transmitting member is fed to the stationary blade in a feed direction that is different from an insertion direction of the movable cutter blade, and wherein the transmitting member is coupled to a main portion of the movable cutter blade, such that the movable cutter blade is undetachably retained at the stationary blade. The disclosure further relates to a method for manufacturing a respective blade.