Back Shaver Cutter Head with Counterweight and Elastic Rotation
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Solution Overview
Problem
Conventional back shavers have complex designs, making them difficult to manufacture and assemble, requiring excessive force for operation, resulting in poor hand feeling and incomplete hair removal.
Innovation Solution
A back shaver design featuring a cutter head assembly with a counterweight mechanism and elastic sheets, allowing for effortless operation and improved hand feeling, with the counterweight block and elastic sheets generating force moments to ensure close contact of the cutter heads with the skin.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a conventional back shaver design is used, then the structure is complete and functional, but the design structure becomes complex and difficult to manufacture and assemble
Solution Approach 1:
The back shaver is divided into distinct modular components: a handle assembly and a cutter head assembly that can be separately manufactured and assembled. The cutter head assembly further includes separable elements such as the cutter head frame, cutter heads, and connecting member, simplifying the manufacturing process for each component while maintaining overall functionality.
Solution Approach 2:
The patent extracts and removes unnecessary complex components from conventional designs. By simplifying the connection between the handle and cutter head, and eliminating redundant structural elements, the design achieves ease of manufacture without compromising the essential shaving function.
2Ease of operation
If a conventional back shaver is used, then the device can perform basic shaving, but a large amount of force is required and operating hand feeling is poor
Solution Approach 1:
A counterweight block is integrated into the cutter head frame to balance the weight distribution of the back shaver. This counterweight mechanism reduces the effort required by the user to operate the device, improving ease of operation by offsetting the force needed to maneuver the cutter head during shaving.
Solution Approach 2:
The connecting member enables dynamic rotation between the handle assembly and cutter head assembly, allowing the cutter head to adapt to different shaving angles and body contours. This dynamic adjustment reduces the force required by the user and improves operating hand feeling through flexible movement.
3Manufacturing precision
If a conventional back shaver is used, then the device can remove hair, but the force is difficult to grasp and shaving effect is incomplete
Solution Approach 1:
The rotating connection between the handle and cutter head assemblies provides dynamic adaptability, allowing the cutter heads to maintain optimal contact with the skin at various angles. This rotational freedom enables precise control over the shaving action, improving shaving precision while making the operating force easier to grasp and control.
Solution Approach 2:
The patent optimizes parameters such as the weight of the counterweight block (10g-30g) and the rotation angle range (≤30°) to achieve the desired balance between ease of operation and shaving precision. These parameter adjustments ensure that the cutter heads can gently rotate and closely attach to body skins for complete hair 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 simplifies the structure, enhances hand feeling, reduces effort required for operation, and achieves a more effective shaving experience with improved skin contact and hair removal.
Implementation Method 1
An additional weight mechanism is disposed on the cutter head frame... the additional weight mechanism is a counterweight block... the counterweight block and the cutter head frame are fixedly connected through screws
Implementation Method 2
elastic sheets are disposed on one side, close to the cutter head frame, of the connecting member. Sliding blocks are disposed on the back surface of the cutter head frame, and free ends of the elastic sheets slide corresponding to the sliding blocks
Data Source
AI summary
A back shaver includes a cutter head assembly and a handle. The handle is connected to the cutter head assembly. The cutter head assembly includes a cutter head frame, cutter heads, and a connecting member. The cutter heads are embedded in a front surface of the cutter head frame. A back surface of the cutter head frame is connected to the connecting member through rotating shafts. An additional weight mechanism is disposed on the back surface of the cutter head frame, and the additional weight mechanism is further disposed close to an upper edge of the back surface of the cutter head frame. The present disclosure has advantages of simple design and structure, good hand feeling, effortless operation, which achieves good shaving effect.