Razor Handle Grip and Structural Reinforcement via Segmented Shells
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Solution Overview
Problem
Conventional razor handles lack effective gripping surfaces and structural reinforcement, leading to potential separation during use and inadequate user comfort.
Innovation Solution
A handle design featuring a body composed of interlocking shells with protrusions and slots, reinforced by a center rod, and a cover layer with varying projection heights to enhance grip and prevent rotation, combined with a thermoplastic elastomer cover for improved handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional razor handles are used, then manufacturing is simple, but gripping security is insufficient and structural reinforcement is lacking
Solution Approach 1:
The handle is divided into multiple functional segments: a body portion, a cover layer with grip enhancements, and an internal rod structure. This segmentation allows each component to serve specific functions - the body provides structural support, the cover layer provides grip security through projections, and the rod prevents separation - thereby improving reliability without requiring a completely complex redesign.
Solution Approach 2:
The handle combines different materials with complementary properties: the body is formed from a rigid material providing structural strength, while the cover layer uses a softer material with varying projection heights to provide enhanced grip security. This composite approach allows the handle to simultaneously achieve structural reinforcement and improved gripping without excessive complexity.
2Strength
If conventional razor handles are used, then manufacturing is simple, but structural reinforcement is insufficient leading to potential separation
Solution Approach 1:
The internal rod structure is pre-positioned within the body portion during manufacturing to prevent separation before use. The rod is strategically placed to provide reinforcement at critical stress points, ensuring structural integrity is established in advance rather than requiring complex assembly steps or post-manufacturing modifications.
Solution Approach 2:
The rod acts as an intermediary element between the body portions, mediating the connection and preventing separation. This intermediate structural element provides the necessary reinforcement without requiring direct complex interlocking mechanisms between the main body components, thereby strengthening the handle while controlling overall complexity.
3Ease of operation
If conventional razor handles are used, then the design is simple, but user comfort is inadequate due to poor tactile interaction
Solution Approach 1:
The cover layer features projections with varying heights distributed across its surface, creating local variations in tactile properties. These localized height differences provide enhanced grip security and improved user comfort at specific contact points without requiring complex changes to the entire handle structure, thereby improving ease of operation with controlled complexity.
Data Source
AI summary
A handle for a razor cartridge is provided. The handle includes a body formed of a first material and defining a centerline, the body having a front end and a rear end, wherein the front end is coupled with the attachment end and wherein the body comprises a first shell and a second shell that are releasably coupled together. A cover layer formed of a second material at least partially overlies the body and surrounds entirely at least a portion of the body. The cover layer has a base surface having a plurality of projections extending therefrom. Each projection of the plurality of projections is interposed between a pair of immediately adjacent projections. Each projection defines a height where the height of each projection is greater than the height of one of the immediately adjacent projections and less than the height of the other immediately adjacent projection.