Ergonomic Razor Handle Taper for Head Shaving Control
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Solution Overview
Problem
Existing shaving razors are not well-suited for head shaving, as they often restrict the user's grip and lack ergonomic design for proper control and manipulation, making it difficult to shave the head effectively.
Innovation Solution
A shaving razor system with a handle that has a maximum width of 28mm to 31mm at the enlarged distal end portion, tapering 10 degrees to 15 degrees along a first length to a second width of 21mm to 25mm, providing improved grip and control for head shaving.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If existing shaving razors are used for head shaving, then the basic shaving function is maintained, but the user lacks proper control and manipulation due to non-ergonomic handle design
Solution Approach 1:
The handle features an enlarged distal end portion with specific dimensional characteristics (maximum width 20-40mm, maximum thickness 5-10mm) that differs from the proximal portion, creating localized ergonomic qualities optimized for head shaving control while maintaining basic shaving functionality
Solution Approach 2:
The handle incorporates an enlarged distal end portion that adds dimensional presence to the grip area, providing multiple surfaces and angles for finger placement that enable various grip orientations suitable for different head shaving positions and angles
2Ease of operation
If handles with loops or rings are used to hold user's hand, then grip stability is improved, but the user's ability to manipulate the razor is restricted
Solution Approach 1:
The enlarged distal end portion provides a dynamic grip surface that adapts to different finger configurations and manipulation styles, allowing the user to transition between various grip positions and angles without being constrained by a fixed loop or ring structure
Solution Approach 2:
The ergonomically shaped enlarged distal end portion serves multiple functions simultaneously: it provides stable grip anchoring, enables various manipulation angles, and accommodates different finger sizes and preferences, making it universally adaptable for head shaving tasks
Data Source
Figure 1
Figure 2
AI summary
A shaving razor system (10) with a cartridge (12) having a proximal end (18) and a distal end (20). A handle (14) having a proximal end portion (22) is connected to the distal end of the cartridge. The handle has an enlarged distal end portion (24). The handle has a maximum width of 28mm to 35mm at the enlarged distal end portion and tapers 10 degrees to 15 degrees along a first length LI that extends from a terminal end of the handle to a second width of 20mm to 25mm toward the proximal end portion. The handle has a maximum thickness of 8mm to 14mm along the first length.