Shaving Head Blade Support with Reduced Cross-Section
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Solution Overview
Problem
Existing shaving heads face difficulties in rinsability due to debris accumulation between blade-shaped cutting members, affecting shaving performance and comfort.
Innovation Solution
The second portion of the supporting member, with a reduced cross-sectional area, extends over at least half of the supporting distance, increasing the free space between cutting members, enhancing rinsability and allowing for closer blade arrangement without compromising cleanliness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the supporting member has a basic cross-sectional area throughout its length, then the cutting member is strongly supported, but the free space between cutting members is narrow causing poor rinsability and debris accumulation
Solution Approach 1:
The supporting member features a variable cross-sectional area along its length: a basic cross-sectional area in the first portion (远离刀刃的部分) providing strong support, and a reduced cross-sectional area in the second portion (靠近刀刃的部分) creating larger free space for rinsability. This local differentiation resolves the contradiction between supporting strength and rinsability.
2Reliability
If the second portion of the supporting member extends over a short distance, then the supporting strength is maintained, but the free space between cutting members remains insufficient for effective rinsing
Solution Approach 1:
The cross-sectional area parameter of the supporting member is changed along its length, with the second portion having a reduced cross-sectional area that extends over at least half of the predetermined distance. This parameter change creates sufficient free space volume for effective rinsing while maintaining supporting strength through the first portion.
3Ease of operation
If the cutting members are arranged at larger mutual distances, then the rinsability is improved, but the shaving comfort decreases and skin irritation risk increases
Solution Approach 1:
The supporting member's cross-sectional area is locally reduced in the second portion, which creates additional free space between cutting members without requiring larger mutual distances. This local quality change enables both good rinsability and close blade arrangement for shaving comfort.
4Ease of operation
If the second portion of the supporting member has a reduced cross-sectional area extending over at least half of the predetermined distance, then the free space between cutting members is increased improving rinsability, but the supporting structure becomes more complex
Solution Approach 1:
The cross-sectional area parameter of the supporting member is changed along its length to create a variable cross-section. This parameter change increases free space for rinsability while maintaining structural integrity through the first portion with basic cross-sectional area.
Data Source
AI summary
The invention relates to a shaving head (5) comprising at least two bladeshaped cutting members (7, 7′, 7″) each having a straight cutting edge (9, 9′, 9″) extending parallel to a longitudinal direction (Y) of the shaving head. Each cutting member is supported in a cartridge (11) of the shaving head by means of a supporting member (17) which supports the respective cutting member in a supported area (23) on the respective cutting member. Said supported area extends over a predetermined distance (D) perpendicular to the longitudinal direction. Each supporting member has a first portion (25) in contact with the supported area at a location remote from the cutting edge of the respective cutting member and a second portion (27) in contact with the supported area at a location near the cutting edge of the respective cutting member. The first portion has a basic cross-sectional area, seen perpendicularly to the longitudinal direction, and the second portion has a reduced cross-sectional area. According to the invention, the second portion (27) of the supporting member (17) of at least one of the cutting members (7, 7′, 7″) extends over at least half of said predetermined distance (D). In this manner, the free space between two adjacent cutting members is considerably increased. As a result, the rinsability of the shaving head is improved, so that the risk of shaving debris accumulation between two adjacent cutting members is reduced.