Razor Handle Movable Members for Ergonomic Grip
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Solution Overview
Problem
Current razor handle designs with replaceable cartridges face challenges such as high manufacturing costs, poor ergonomics, and durability issues due to complex components and tight tolerances, while also limiting consumer benefits like skin interaction and shaving performance.
Innovation Solution
A razor handle design featuring a rigid member with movable components and assemblies above and below, allowing for simpler and cost-effective manufacturing, improved ergonomics, and enhanced consumer benefits through skin interconnect members that can pivot and deliver benefits like heating or fluid dispensing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If additional components with prescribed motion are added to improve ergonomics and cartridge attachment, then consumer benefits are improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent merges the cartridge attachment mechanism and ergonomic grip into a single integrated handle body structure. The handle body directly engages the cartridge without requiring separate attachment components, while the ergonomic contour is formed as part of the same structural element, eliminating the need for additional parts with prescribed motion.
Solution Approach 2:
The handle body serves multiple functions simultaneously: it provides the structural framework, enables cartridge attachment through direct engagement features, and delivers ergonomic comfort through its contoured design. This multi-functional approach eliminates the need for separate specialized components for each function.
2Manufacturing precision
If tight tolerances are specified for additional components, then cartridge attachment precision is improved, but manufacturing cost and assembly difficulty increase
Solution Approach 1:
The patent segments the attachment interface into discrete engagement features (protrusions and recesses) that are formed as integral parts of the handle body and cartridge. This segmentation allows each feature to be manufactured independently with standard tolerances, avoiding the need for tight tolerances across the entire assembly while maintaining precise cartridge attachment.
3Adaptability or versatility
If heating elements and complex interfaces are added to deliver consumer benefits, then product functionality is improved, but manufacturing cost increases
Solution Approach 1:
The patent introduces a benefit delivery interface as an intermediary component that connects the handle body to the cartridge. This interface serves as a mediator that can deliver heating, cooling, or fluid benefits from the handle to the shaving surface, while maintaining a simple mechanical connection that does not require complex internal mechanisms within the cartridge itself.
4Area of stationary object
If large contact area of shaving surfaces is used, then shave coverage is improved, but handle ergonomics and performance deteriorate
Solution Approach 1:
The patent resolves the conflict between large shaving surface area and handle ergonomics by separating these functions into different spatial dimensions. The cartridge is designed with an extended head that provides a large shaving surface area in the horizontal plane, while the handle body maintains a compact, ergonomic grip in the vertical plane. This dimensional separation allows both large contact area and good ergonomics to coexist without compromising either performance or comfort.
Data Source
AI summary
A handle for a shaving razor in which the handle comprises a frame and a movable member assembly operably coupled to the frame such that the frame is disposed between the movable member assembly and where the movable member assembly portions are configured to move both above and below the frame. The movement can be linear or rotational. The movable member assembly comprises one or more springs. A method of manufacturing a razor handle comprising the steps of providing an upper portion with one or more upper elements, providing a lower portion with one or more lower elements, securing the upper portion to the lower portion wherein a rigid member extends between the upper portion and the lower portion.