Razor Handle Segmented Pod Injection Molding
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Solution Overview
Problem
Existing razor handles with detachable cartridges face challenges in incorporating multiple features and a battery-powered device due to the complexity of injection molding, which often requires assembled moving parts that are difficult to mold in a single process.
Innovation Solution
A razor handle design where the first handle portion is injection molded with a battery-powered device, and a separate connecting pod is assembled and attached, allowing for various features and colors, with the pod connecting the razor cartridge securely to the handle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple injection molding steps are used to form the handle with additional features, then the handle can have more features, colors, and contours, but the manufacturing complexity increases and prevents molding of entire handle with cartridge-connecting members
Solution Approach 1:
The handle is divided into two main segments: the handle body formed by injection molding and the cartridge-connecting member formed separately and then attached. This segmentation allows each component to be optimized independently - the handle body can incorporate multiple features through multi-step injection molding while the connecting member can be designed for easy attachment, resolving the contradiction between feature richness and manufacturing complexity
Solution Approach 2:
The patent merges the handle body and cartridge-connecting member into a single integrated assembly through attachment processes. This combining approach allows the final product to function as a unified device with both the aesthetic and functional features of injection molding and the mechanical functionality of assembled connecting members
2Ease of operation
If cartridge-connecting members with moving features are assembled from distinct parts, then the connecting function is achieved, but the handle cannot be injection molded as a single piece
Solution Approach 1:
The cartridge-connecting member is segmented from the handle body and formed separately using processes suitable for creating moving features and mechanical connections. This separate formation allows the connecting member to incorporate hinges, springs, or other mechanical elements that would be difficult to integrate into an injection-molded handle body, while still achieving the desired cartridge connection function
Solution Approach 2:
The cartridge-connecting member acts as an intermediary component between the handle body and the razor cartridge. This intermediate element provides the mechanical interface and moving features needed for cartridge attachment and release, while allowing the handle body itself to be optimized for injection molding with aesthetic and ergonomic features
Data Source
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AI summary
According to the present invention, a razor handle (10) includes a connecting pod (14) and a first handle portion (12). The connecting pod has a cartridge-connecting member (26), and a handle-connecting member (24). The first handle portion includes a pod-connecting member (38), and includes a first molded portion (16), a battery-powered device (18), and a second molded portion (20). The battery-powered device is at least partially encased between the first molded portion and the second molded portion. The handle-connecting member of the connecting pod is connected to the pad-connecting member of the first handle portion such that the connecting pod and the first handle portion are not detachable during normal use of the razor handle. The cartridge-connecting member of the connecting pod is operable to connect to a selectively detachable razor cartridge (44).