Razor Handle Assembly via Detachable Head and Tail Coupling

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Solution Overview

Problem

Conventional razor handle manufacturing methods involve slow work speeds and poor appearance quality due to glue exposure, complicating the assembly process and increasing defect rates.

Innovation Solution

The razor handle design features a detachable head and tail portion that are inserted through opposite ends of the handle body, eliminating the need for bonding and allowing for separate recycling, thus simplifying assembly and enhancing production speed.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If conventional bonding methods are used to assemble razor handle components, then structural integrity is maintained, but assembly speed decreases and appearance quality deteriorates due to glue exposure

Engineering Contradiction:

Improveassembly speedVSAvoidappearance quality

Core Design Contradiction:

ProductivityVSManufacturing precision

Solution Approach 1:

The invention extracts and eliminates the bonding agent (glue) from the assembly process by implementing a mechanical coupling system where the cartridge coupling portion and grip portion are directly connected through a recess-protrusion interface, preventing glue exposure and improving appearance quality while maintaining assembly speed

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The razor handle is segmented into distinct components (cartridge coupling portion, grip portion, head portion, tail portion) that can be independently manufactured and then quickly assembled through mechanical coupling, improving both productivity and appearance by eliminating the need for bonding agents

Inventive Principle:

Principle #1Segmentation

2Ease of manufacture

If conventional bonding methods are used to assemble razor handle components, then structural integrity is maintained, but assembly process complexity increases

Engineering Contradiction:

Improveassembly process simplicityVSAvoidassembly process complexity

Core Design Contradiction:

Ease of manufactureVSDevice complexity

Solution Approach 1:

The handle is divided into separable components with standardized coupling interfaces, allowing each component to be manufactured independently and assembled through simple mechanical coupling without complex bonding processes

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Instead of bonding components together and then dealing with cleanup and quality issues, the invention inverts the approach by designing components that mechanically couple directly, eliminating the bonding step entirely from the assembly process

Inventive Principle:

Principle #13The other way round (Inversion)

Data Source

PatentUS20240359349A1Razor handle

Publication Date: 2024.10.31 DORCO CO LTD

AI summary

Proposed is a razor handle. The razor handle may include a handle body including a first opening and a second opening formed at both ends thereof, and a head portion including a cartridge coupling portion at least partially exposed to the outside of the first opening, and a head body extending from the cartridge coupling portion and accommodated in the handle body through the first opening. The razor handle may also include a tail portion including a distal end portion at least partially exposed to the outside of the second opening, and a tail body extending from the distal end portion and accommodated in the handle body through the second opening. The head body may be detachably coupled to at least one of the handle body or the tail body, and the tail body may be detachably coupled to at least one of the handle body or the head body.