Adjusting Device for Hair Cutting Blade Gap Control
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Solution Overview
Problem
Existing hair cutting devices require precise adjustment of the distance between movable and stationary blades for precise cutting, which is challenging for users due to the need for technical expertise and can lead to skin damage if not done correctly.
Innovation Solution
An adjustment device that allows users to adjust the cutting set of hair cutting devices easily and precisely, ensuring a minimal distance between the blades without disassembly, using a box-shaped structure with snap hooks and guides to secure the cutting set in place.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the distance between the movable blade and stationary blade is reduced to achieve extremely short cutting lengths, then the cutting precision and short cutting capability are improved, but the risk of skin damage increases and the adjustment difficulty increases
Solution Approach 1:
The patent introduces a comb as an intermediary element between the movable blade and stationary blade. The comb's teeth are positioned between the blade teeth, creating a physical barrier that prevents the movable blade from directly contacting the skin while still allowing it to cut hair. This mediator structure enables extremely short cutting lengths without the skin damage risk that would otherwise occur when blades are positioned very close together.
2Length of moving object
If the distance between the movable blade and stationary blade is adjusted to minimal distance for precise cutting, then the cutting length is reduced, but the adjustment requires technical expertise and is difficult to perform correctly
Solution Approach 1:
The patent implements a self-adjusting mechanism where the comb automatically positions itself between the blades at the correct distance. The comb's structure and the blade geometry are designed so that when the comb is inserted, it naturally establishes the optimal spacing without requiring the user to perform complex manual adjustments. The system serves itself by using the comb as both a functional element and an adjustment reference.
Solution Approach 2:
The comb is pre-positioned with teeth that match the blade tooth geometry, so that when inserted into the device, it automatically establishes the correct spacing between blades before cutting begins. This preliminary positioning of the comb eliminates the need for users to perform difficult manual adjustments of blade distances.
3Measurement precision
If the blades are adjusted to minimal distance for zero-overlap adjustment, then the cutting precision is improved, but the adjustment process requires complete disassembly and reinstallation
Solution Approach 1:
The comb is pre-manufactured with teeth that precisely define the correct spacing between blades. Before adjustment is needed, the comb is already positioned and secured in the device, having pre-established the optimal blade distance. This preliminary preparation eliminates the need for time-consuming disassembly and reassembly processes.
Solution Approach 2:
The comb structure itself serves as the adjustment mechanism. By simply inserting or repositioning the comb, the system automatically restores the correct blade spacing without requiring users to disassemble components or perform complex adjustment procedures. The comb performs the adjustment function as part of its normal operation.
Data Source
Figure 1a~2b
Figure 3~4
Figure 5a~6
AI summary
The present invention relates to an adjustment device (10) for a hair cutting device (20), wherein the hair cutting device (20) has a device housing (22) and a cutting set (24) fixedly connected to the device housing (22), wherein the cutting set (24) consists of a shearing blade (26) comprising blade tips (30) and a shearing comb (28) connected thereto, comprising comb tips (32), and wherein the shearing comb (28) can be detachably connected to the shearing blade (26) and thus also to the hair cutting device (20) by means of connecting elements (62).According to the invention, the adjusting device (10) is dimensioned such that it can receive and hold the shearing comb (28), so that the shearing comb (28) can be moved relative to the device housing (22) after loosening the connecting elements (62) together with the adjusting device (10), so that a distance between the knife tips (30) and the comb tips (32) can be defined.