Razor Handle Assembly Using Compressed Dual Shells and Elastomer Cover
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Solution Overview
Problem
Conventional razor handles lack a secure and ergonomic design that prevents the head from separating from the body, especially during mishandling, and do not provide an effective grip for users.
Innovation Solution
A razor handle assembly method involving a body formed by two shells with a rod and a clip member, where the shells are compressed together with a cover layer to enhance stability and grip, using a thermoplastic elastomer cover layer for improved user interaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional razor handles are designed with simple head-body attachment, then manufacturing complexity is reduced, but the head separates from the body during mishandling
Solution Approach 1:
The handle body is divided into two separate shells that are compressed together to form a unified structure. This segmentation allows for more complex attachment mechanisms while maintaining manufacturing simplicity, as each shell can be produced independently and then assembled through compression to secure the head firmly in place.
Solution Approach 2:
A thermoplastic elastomer cover layer is applied over the compressed shells to create a composite structure. This elastomer material provides flexibility and grip while the compressed shell structure provides structural integrity, together preventing head separation during mishandling without requiring overly complex attachment mechanisms.
2Ease of operation
If conventional razor handles lack ergonomic design, then manufacturing is easier, but users experience poor grip
Solution Approach 1:
A thermoplastic elastomer cover layer is applied over the compressed shells to create a flexible, ergonomic surface. This thin film provides enhanced grip and user comfort while the underlying compressed shell structure maintains structural integrity. The elastomer material can be molded into ergonomic shapes without significantly increasing manufacturing complexity.
3Stability of the object's composition
If two shells are compressed together, then stability and grip are enhanced, but assembly process becomes more complex
Solution Approach 1:
The rod is installed into the first shell before the shells are compressed together. This preliminary action simplifies the overall assembly process by pre-positioning internal components, making the subsequent compression step more straightforward. The rod serves as a structural element that helps maintain stability during compression while the compressed shells provide the final stable structure.
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
The solution provides enhanced stability by preventing the head from separating from the body and offers a better grip for users, enhancing the overall handling and aesthetics of the razor handle.
Implementation Method 1
using a thermoplastic elastomer cover layer for improved user interaction
Data Source
AI summary
A method for assembling a razor handle is provided. The method includes installing a rod into a first shell of a body of a razor handle, installing an attachment end of a head onto a front end of the first shell, installing a clip member onto a rear end of the first shell, positioning a second shell adjacent to the first shell, compressing the first shell and the second shell together, and covering the first and second shell with a cover layer. The clip member includes retention features to facilitate coupling to the first and second shells. The cover layer can entirely surround the first and second shells, can be overmolded on both shells, and can be formed of thermoplastic elastomer with a durometer value of between about 15 and about 20. The thermoplastic elastomer is substantially translucent or less opaque than the first and second shell.