Shaving Razor Handle Tilt for Water Runoff
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Solution Overview
Problem
Shaving razor cartridges with water-soluble shaving aids tend to stick to horizontal surfaces and develop uneven skin-contacting surfaces when stored, leading to unpleasant sensations during shaving due to inadequate water runoff and drying.
Innovation Solution
A shaving razor system design where the handle is tilted at an angle of 7-15 degrees when resting, with contact areas on the handle and lateral edges minimizing direct contact of the shaving aid body with the surface, facilitating water runoff and drying without compromising ergonomics or aesthetics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the shaving aid body is placed on a horizontal surface for storage, then the razor is easy to store, but the shaving aid body sticks to the surface and may detach from the cartridge
Solution Approach 1:
The patent introduces a tilt angle dimension to the storage configuration. Instead of storing the razor horizontally with the shaving aid body directly contacting the surface, the razor is positioned at a tilt angle of 15-45 degrees, causing the shaving aid body to be elevated and spaced apart from the horizontal surface by a distance of 0.5-2 mm. This dimensional change prevents sticking while maintaining storage convenience.
2Stability of the object's composition
If the shaving aid body contacts the horizontal surface during storage, then the razor is stable for storage, but water runoff is inadequate and drying is poor
Solution Approach 1:
By positioning the razor at a tilt angle rather than horizontally, the patent creates vertical spacing between the shaving aid body and the horizontal surface. This dimensional adjustment enables water to run off the inclined surface effectively while the shaving aid body remains elevated, preventing water retention and uneven surface formation.
Solution Approach 2:
The patent extracts the shaving aid body from direct contact with the horizontal surface by spacing it apart through the tilted positioning. This separation removes the harmful interaction between the water-soluble shaving aid material and the storage surface, allowing proper drainage and drying.
3Object-generated harmful factors
If the razor is positioned at a tilt angle for storage, then water runoff and drying are improved, but the contact area with the surface is reduced
Solution Approach 1:
The patent trades horizontal contact area for vertical spacing by introducing a tilt angle. The razor contacts the horizontal surface along a line or small area at the handle and rear portion, while the shaving aid body is elevated in the vertical dimension. This dimensional trade-off maintains sufficient stability through point/line contact while enabling effective water runoff and drying.
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
Prevents sticking of the shaving aid body and promotes effective drying of the razor cartridge, maintaining shaving performance and comfort by ensuring the shaving aid body does not contact the surface, thus enhancing user experience.
Implementation Method 1
a shaving aid material that can include a water soluble polymer such as polyethylene oxide
Implementation Method 2
A shaving razor system design where the handle is tilted at an angle of 7-15 degrees when resting, with contact areas on the handle and lateral edges minimizing direct contact of the shaving aid body with the surface, facilitating water runoff and drying
Implementation Method 3
facilitating water runoff and drying without compromising ergonomics or aesthetics
Data Source
AI summary
A shaving razor system with a shaving razor cartridge having a first face with a first and second of lateral edges, the first face having a cap, a guard and at least one blade between the cap and the guard. A handle having a proximal end mounted to the shaving razor cartridge and a distal end. The handle includes a gripping portion between the proximal end and the distal end with a first lower surface toward the proximal end and a second lower surface toward the distal end. The shaving razor system has a rest position on a generally horizontal resting surface with areas of contact of the shaving razor system to the generally resting horizontal resting surface include the first lower surface, the second lower surface and the first lateral edge. The second lateral edge is spaced apart from the generally horizontal resting surface.