Four-Way Shaver Head Swing Structure for Scratch Prevention

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Solution Overview

Problem

Conventional manual shavers face difficulties in shaving grip and safety hazards due to the inability of the shaver head to rotate laterally and automatically correct directions, leading to facial scratches during shaving.

Innovation Solution

A four-way swing structure for the shaver head that allows it to rotate both up and down and left and right, featuring a push-in mechanism assembly with a U-shaped elastic piece for stability and automatic resetting, enabling the shaver head to correct shaving direction and prevent scratches.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the shaver head is designed with a fixed structure, then the structure is simple and easy to manufacture, but the shaver head cannot rotate laterally to correct shaving direction, causing safety hazards and difficulty in operation

Engineering Contradiction:
Improveshaving direction correctionVSAvoidshaver head structure
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The shaver head is designed with dynamic rotational capabilities around two perpendicular axes. The first rotation axis allows the shaver head to rotate up and down, while the second rotation axis enables left and right rotation, transforming a fixed structure into a dynamically adjustable one that adapts to facial contours and corrects shaving direction automatically

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The rotation mechanism is divided into two independent rotational degrees of freedom. The first rotation mechanism handles up-down movement, while the second rotation mechanism handles left-right movement. This segmentation allows each mechanism to be optimized independently and simplifies the overall control of the complex motion

Inventive Principle:
Principle #1Segmentation

2Reliability

If the shaver head rotates only up and down around one axis, then the structure is simpler, but it cannot automatically correct left and right shaving direction, posing safety hazards

Engineering Contradiction:
Improveshaving safetyVSAvoidrotation mechanism
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The shaver head incorporates two independent rotation mechanisms that enable dynamic adjustment in two perpendicular directions. The first rotation mechanism allows up-down rotation, while the second rotation mechanism enables left-right rotation, creating a dynamically adaptive structure that automatically corrects shaving direction and enhances safety

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The rotation mechanisms utilize composite structural designs combining multiple components with different functions. The first rotation mechanism includes a first rotation component, while the second rotation mechanism includes a second rotation component, creating a composite mechanical system that achieves reliable multi-directional movement

Inventive Principle:
Principle #40Composite materials

3Ease of operation

If the shaver head is designed with multi-directional rotation capability, then shaving safety and ease of operation are improved, but the structure becomes more complex and difficult to manufacture

Engineering Contradiction:
Improvemanual shaving difficultyVSAvoidshaver head structure
Core Design Contradiction:
Ease of operationVSEase of manufacture

Solution Approach 1:

The complex multi-directional rotation mechanism is segmented into two independent rotation mechanisms. The first rotation mechanism handles up-down rotation, while the second rotation mechanism handles left-right rotation. This segmentation allows each mechanism to be manufactured and assembled separately, simplifying the overall manufacturing process despite the complex functionality

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The design uses dynamic rotational joints that allow movement in two perpendicular directions. By implementing the first rotation mechanism for up-down rotation and the second rotation mechanism for left-right rotation, the system achieves manual shaving ease while maintaining manufacturability through modular dynamic components

Inventive Principle:
Principle #15Dynamics

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 four-way swing structure enhances shaving efficiency by automatically correcting shaving direction, reducing safety hazards and facilitating easy replacement of the shaver head, thus improving user safety and convenience.

Implementation Method 1

a rotating section of the U-shaped elastic piece is assembled in the U-shaped assembly groove

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentUS12459142B1Four-way swing structure of shaver head
Publication Date: 2025.11.04 JIANGXI XIRUI MFG CO LTD
  • US12459142B1 patent drawing
  • US12459142B1 patent drawing
  • US12459142B1 patent drawing

AI summary

The present invention relates to a four-way swing structure of a shaver head, which includes: a shaver handle body, wherein a front end of the shaver handle body is provided with a clamping groove, a top and a bottom of the clamping groove are symmetrically provided with a first pin hole, and a bottom wall of the clamping groove is provided with two insertion holes; and a push-in mechanism assembly, wherein the push-in mechanism assembly includes a push-in mechanism, the push-in mechanism is partially positioned in the clamping groove, a second pin hole is vertically provided in a front end of the push-in mechanism, a pin is rotatably connected in the second pin hole, and two ends of the pin are each fixedly connected in the first pin hole. The present invention relates to the technical field of shavers.