Shaver Handle Snap-Fit Mechanism Prevents Shock Disassembly
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing shaver handles with flexible yokes are prone to disassembly when subjected to force, such as during a drop, which can lead to damage or improper assembly, and there is a need for a design that allows easy assembly and retention of shaving cartridges while preventing disassembly under shock conditions.
Innovation Solution
A shaver handle design featuring a front and lower part assembly with snap-fitting mechanisms, flexible hooks, and an abutment member that prevents disengagement of the hooks from the slot, combined with a plunger and spring system for cartridge retention and easy replacement, ensuring the handle remains assembled even under applied forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the handle is designed as a one-piece plastic structure with a button, then the assembly is simple and manufacturing is easy, but the handle is prone to disassembly when subjected to force such as during a drop
Solution Approach 1:
The handle is divided into multiple pieces (upper part and lower part) that are assembled together using snap-fitting mechanisms. This segmentation allows the handle to be manufactured separately and then joined, improving reliability by preventing disassembly under shock while maintaining ease of manufacture through modular construction
Solution Approach 2:
The flexible hooks are nested within the slot structure, and the abutment member is positioned within the handle assembly to engage with the hooks. This nested arrangement ensures that the hooks remain constrained within the slot and cannot disengage even when force is applied to the handle
2Adaptability or versatility
If the handle is divided into multiple pieces, then assembly flexibility and repairability improve, but the pieces may disassemble when force is applied to the handle
Solution Approach 1:
The flexible hooks are pre-positioned and snap-fitted into the slot before the handle is subjected to any external force. The abutment member is preliminarily positioned to engage with the hooks, creating a pre-established constraint system that prevents disassembly under subsequent shock or force
Solution Approach 2:
The flexible hooks are designed to be elastic and resilient, allowing them to deform slightly under force while maintaining engagement with the slot. This flexibility enables the hooks to absorb shock and prevent disassembly, while still allowing for easy assembly and disassembly when needed
3Strength
If the button is made fixed and rigid, then structural stability improves, but the button cannot facilitate easy cartridge removal
Solution Approach 1:
The button is designed with flexible hooks that can move and deform elastically. When force is applied to the button during normal operation, the hooks flex to facilitate cartridge removal. When shock or impact force is applied, the same elastic properties allow the hooks to absorb the force while maintaining engagement with the slot, providing both ease of operation and structural stability
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 design effectively prevents disassembly of the handle and its components, particularly the button and plunger, when subjected to shock, while allowing easy assembly and cartridge replacement, enhancing the handle's resilience and user experience.
Implementation Method 1
an elastic element to return said slide element from the release position to the rest position
Implementation Method 2
the button comprises at least one pair of opposed flexible hooks which are snap-fitted with the longitudinal tracks of the slot and hold the button onto the handle
Data Source
Figure 1A
Figure 1B
Figure 2
AI summary
A handle for a shaver having a front portion, a removable shaving cartridge, an upper part and a lower part assembled together, and a movable button positioned in the front portion of the handle and adapted to facilitate the removal of the shaving cartridge. The upper part of the handle has a slot with two longitudinal edges forming a pair of opposed tracks, the button has a pair of opposed flexible hooks which are snap-fitted with the longitudinal tracks of the slot and hold the button onto the handle, and the lower part of the handle has an abutment member which is engaged between the flexible hooks, the abutment member being adapted to prevent the flexible hooks from disengaging the tracks of the slot.