Shaver Cartridge Pivot Support and Coupling Mechanism
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Solution Overview
Problem
Conventional shavers have a weak pivot support structure that can lead to undesirable separation or breakage of the cartridge from the handle when external force is applied, and the coupling mechanism is complex and prone to undesirable removal.
Innovation Solution
A shaver design featuring a removable cartridge with a connector mounting part and a handle assembly that includes a holder mounted to rotate around a pivot shaft, utilizing a removing means with elastic steps and hooks for secure coupling, and a support means with elastic members to facilitate smooth rotation and resist external forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the pivot support shafts are directly coupled to the cartridge body to enable rotation, then the cartridge can rotate during shaving, but the pivot support structure becomes weak and may break or separate when external force is applied
Solution Approach 1:
The cartridge assembly is divided into separate functional components: the cartridge body (110) containing blades, the connector (130) for coupling, and the holder (230) mounted on the handle assembly. The pivot support function is transferred from the cartridge body to the holder, which is firmly mounted on the handle assembly. This segmentation allows the cartridge body to rotate smoothly while the holder provides strong structural support and resists external forces.
2Ease of operation
If the pivot support shafts are inserted into holes in the cartridge body to support rotation, then the cartridge can be mounted, but the supporting force is weak and the structure is prone to breakage
Solution Approach 1:
The connector (130) serves as an intermediary component between the cartridge body (110) and the holder (230). The connector includes a cartridge coupling part that couples to the cartridge body and a holder coupling part that couples to the holder. This intermediary structure provides reliable mechanical coupling with hooks (233) engaging elastic steps (133), ensuring the cartridge is firmly supported while allowing easy attachment and detachment.
3Device complexity
If the coupling part uses spring elastic force to removably couple the cartridge to the handle, then the coupling mechanism can be simple, but the structure becomes complex and prone to undesirable removal when external force is applied
Solution Approach 1:
The coupling mechanism incorporates dynamic elements including elastic steps (133) that can be compressed and expanded, and hooks (233) that engage with these steps. When the cartridge is attached, the elastic member (S3) compresses and the hooks engage with the elastic steps, creating a secure connection. When external force is applied or the button (241) is pressed, the elastic steps expand allowing the hooks to disengage, enabling controlled removal. This dynamic design provides both secure coupling and easy removal.
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 enhances the coupling force between the cartridge and handle, prevents separation or breakage under external force, and allows for smooth rotation, simplifying the removable structure and improving shaving efficiency.
Implementation Method 1
a manipulating means which is installed in the housing in such a way as to be operated in conjunction with the removing means, and separates the holder from the holder mounting part, when physical force is applied to the removing means by elastic force, and is restored to an original position thereof
Implementation Method 2
a support means which is installed in the housing in such a way as to be operated in conjunction with the holder and elastically supports rotating motion of the holder using elastic force
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
Disclosed herein is a shaver. The shaver includes a removable cartridge and a handle assembly. The removable cartridge includes a cartridge body, at least one blade mounted to the lower surface of the cartridge body, a connector mounting part provided on the upper surface of the cartridge body, and a connector mounted to the connector mounting part and having a holder mounting part. The handle assembly includes a handle body, a housing provided on a front end of the handle body, a holder mounted to a front end of the housing in such a way as to rotate around a pivot shaft, a removing means functioning to removably couple the holder to the holder mounting part, a manipulating means installed in the housing to be operated in conjunction with the removing means, and a support means elastically supporting rotating motion of the holder using elastic force.