Portable Beauty Instrument Middle Frame for Compact Component Protection

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Solution Overview

Problem

Existing beauty devices suffer from disorganized internal structures, low space utilization, large volume, and compromised structural strength due to their design.

Innovation Solution

A portable beauty device with a middle frame comprising first and second mounting plates, side housings, and a front housing assembly that creates separate accommodating spaces for electrodes and circuits, enhanced by sealing members and connecting ribs to improve structural strength and space utilization.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If two housings are used to house circuits and components, then component protection is improved, but structural strength deteriorates and volume increases

Engineering Contradiction:
Improvecomponent protectionVSAvoidstructural strength
Core Design Contradiction:
ReliabilityVSStrength

Solution Approach 1:

The device is segmented into three functional zones using mounting plates: a first accommodating space for batteries, a second accommodating space for circuits, and a third accommodating space for electrodes. This segmentation allows each component to be protected in its dedicated space while maintaining overall structural integrity through the rigid mounting plates that form the framework.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The mounting plates are nested within the housing structure, with the first and second mounting plates arranged along different directions and connected to form the middle frame. The side housings and front housing assembly are then assembled around this nested framework, creating a compact integrated structure that protects components without excessive volume.

Inventive Principle:
Principle #7Nested doll (Nesting)

2Reliability

If two housings are used to house circuits and components, then component protection is improved, but device volume increases

Engineering Contradiction:
Improvecomponent protectionVSAvoiddevice volume
Core Design Contradiction:
ReliabilityVSVolume of moving object

Solution Approach 1:

The first and second mounting plates are arranged along different directions (first direction and second direction respectively) and connected to form a three-dimensional middle frame structure. This dimensional arrangement optimizes space utilization by distributing components along multiple axes rather than stacking them linearly, reducing overall device volume while maintaining protection.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The middle frame formed by the mounting plates is merged with the housing structure, where side housings and front housing assembly are integrated around the frame. This merging eliminates the need for separate protective housings, as the frame itself becomes part of the protective structure, reducing total device volume.

Inventive Principle:
Principle #5Merging (Combining)

3Volume of moving object

If components are arranged in separate accommodating spaces, then space utilization is improved, but device complexity increases

Engineering Contradiction:
Improvespace utilizationVSAvoidstructural complexity
Core Design Contradiction:
Volume of moving objectVSDevice complexity

Solution Approach 1:

The mounting plates serve multiple functions: they form the structural framework of the device, create separate accommodating spaces for different components, provide mounting surfaces for circuits and electrodes, and contribute to the overall housing structure. This multi-functionality reduces the need for additional separate structures, simplifying the overall device despite the segmented component arrangement.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The device is segmented into three functional zones using mounting plates: a first accommodating space for batteries, a second accommodating space for circuits, and a third accommodating space for electrodes. This segmentation allows each component to be protected in its dedicated space while maintaining overall structural integrity through the rigid mounting plates that form the framework.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentEP4371605B1Portable beauty instrument and charging base thereof
Publication Date: 2025.10.29 SHENZHEN ULIKE SMART ELECTRONICS CO LTD
  • EP4371605B1 patent drawingFigure 1
  • EP4371605B1 patent drawingFigure 2
  • EP4371605B1 patent drawingFigure 3~4

AI summary

Disclosed is a portable beauty device. The beauty device includes a middle frame, a rear housing, a front housing assembly, an electrode, and a processing circuit. The middle frame includes a first mounting plate extending along a first direction and a second mounting plate extending along a second direction. The rear housing at least partially surrounds the first mounting plate and defines a second accommodating space cooperatively with the first mounting plate. The front housing assembly is arranged on a side of the second mounting plate away from the rear housing, and defines a third accommodating space cooperatively with the second mounting plate. The electrode is arranged in the third accommodating space and at least partially exposes out of the front housing assembly. The processing circuit is arranged in the second accommodating space and connected with the electrode to drive the electrode to discharge. The middle frame is served as a mounting body of the front housing assembly and the rear housing, and defines different accommodating spaces for receiving the electrodes and the circuits respectively, which can not only improve overall structural strength of the beauty device, but also increase utilization of space inside the beauty device.