Anti-Clogging Blocking Member for Shaving Assembly Guard Tooth Slots
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Solution Overview
Problem
Conventional shaving and hair cutting appliances experience clogging issues due to long hairs getting stuck in angulated guard tooth slots, leading to hindered or stopped hair cutting, especially with close shaving trimmers designed for closer distances from the skin.
Innovation Solution
The introduction of an anti-clogging blocking member that extends between the moving tooth and the supporting arm, facilitating hair release from guard tooth slots by applying additional force and guiding cut hairs out of the slots, reducing friction and preventing clogging through strategically designed blocking parts and orientations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If thinner guard teeth and angulated guard tooth slots are used to achieve closer shaving distance, then the shaving effectiveness is improved, but hair clogging in the slots occurs more frequently
Solution Approach 1:
The blocking member extracts the harmful function of hair accumulation from the guard tooth slot by providing a separate ejection path. The blocking member extends into the slot and pushes cut hair outward through the side wall, separating the cutting function (guard tooth) from the ejection function (blocking member), thereby preventing clogging while maintaining close shaving capability
Solution Approach 2:
The blocking member acts as an intermediary element between the guard tooth slot and the cut hair. It mediates the interaction by applying a blocking force that redirects hair flow from the slot interior to the exterior through the side wall, preventing direct accumulation of hair in the slot while allowing continuous cutting operation
2Reliability
If complex rounding features and specialized guard tooth designs are added to improve trim effectiveness, then the shaving performance is improved, but the device complexity increases
Solution Approach 1:
The blocking member merges multiple functions into a single component: it blocks hair flow from the slot, pushes cut hair outward through the side wall, and maintains structural integrity of the guard tooth assembly. This consolidation reduces overall device complexity while improving trim effectiveness by ensuring continuous hair removal without clogging
Data Source
AI summary
Embodiments of present disclosure relates to a shaving assembly and a hair cutting appliance comprising the shaving assembly. The shaving assembly comprises: a supporting arm extending in a first direction; a cutting element comprising at least one moving tooth arranged along the first direction; a guard foil extending in the first direction and surrounding the cutting element, the guard foil comprising: a contact surface and a bent part, wherein an angle between the contact surface and the supporting arm is an acute angle, and at least one guard tooth slot is formed across the contact surface and the supporting arm, wherein the shaving assembly further comprises: a blocking member extending between the moving tooth and the supporting arm in a second direction that is substantially perpendicular to the contact surface, wherein the blocking member is adapted to facilitate hair being released from the guard tooth slot when the guard tooth slot is moved against the hair.