Rotating Battery Bracket Structure for Compact Wearables

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Solution Overview

Problem

Existing electronic devices, such as in-ear hearing aids and headphones, face challenges in miniaturization and lightweight design due to their structural design, which includes a main body with a large size and heavy weight.

Innovation Solution

A wearable device with a housing assembly and battery assembly, featuring a battery bracket that rotates and locks within an accommodating cavity, reducing the number of connecting parts and optimizing space utilization, allowing for easy battery replacement and maintenance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If traditional structural design with internal framework and external housing is used, then functional components can be assembled into unified structure, but device size and weight increase

Engineering Contradiction:
Improveassembly of functional componentsVSAvoiddevice weight
Core Design Contradiction:
Ease of manufactureVSWeight of moving object

Solution Approach 1:

The patent merges the internal framework and external housing into a unified integrated housing structure. The housing serves dual purposes as both structural support and external enclosure, eliminating separate framework components and reducing overall device weight while maintaining assembly capability for functional components.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The housing structure is designed to perform multiple functions simultaneously: providing structural support, serving as external enclosure, and facilitating component assembly. This multi-functional design eliminates the need for dedicated framework components, reducing weight while maintaining manufacturing ease.

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

2Ease of manufacture

If traditional structural design with internal framework and external housing is used, then functional components can be assembled into unified structure, but device volume increases

Engineering Contradiction:
Improveassembly of functional componentsVSAvoiddevice volume
Core Design Contradiction:
Ease of manufactureVSVolume of moving object

Solution Approach 1:

The patent merges the internal framework and external housing into a unified integrated housing structure. The housing serves dual purposes as both structural support and external enclosure, eliminating separate framework components and reducing overall device volume while maintaining assembly capability for functional components.

Inventive Principle:
Principle #5Merging (Combining)

3Device complexity

If battery bracket is fixed within accommodating cavity, then device structure is simplified, but battery replacement becomes difficult

Engineering Contradiction:
Improvedevice structureVSAvoidbattery replacement
Core Design Contradiction:
Device complexityVSEase of repair

Solution Approach 1:

The battery bracket is designed with rotatable connection to the housing, allowing it to rotate between a working position (where it closes the battery window) and a maintenance position (where it can be easily removed). This dynamic design maintains structural integrity during operation while enabling easy battery replacement for maintenance.

Inventive Principle:
Principle #15Dynamics

4Ease of repair

If battery bracket rotates freely, then battery replacement is easy, but device structure becomes complex

Engineering Contradiction:
Improvebattery replacementVSAvoiddevice structure
Core Design Contradiction:
Ease of repairVSDevice complexity

Solution Approach 1:

The battery bracket rotates about a pivot structure formed between the battery bracket and housing inner wall, enabling easy battery replacement while maintaining a relatively simple device structure through integrated pivot design.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentEP4697743A1Wearable device
Publication Date: 2026.02.18 SHENZHEN SHOKZHEAR CO LTD
  • EP4697743A1 patent drawingFigure 1
  • EP4697743A1 patent drawingFigure 2
  • EP4697743A1 patent drawingFigure 3

AI summary

A wearable device includes a housing assembly and a battery assembly, the housing assembly including an accommodating cavity and a battery window, the battery assembly including a battery bracket configured to mount a battery. A second pivot structure and a locking structure are formed between the battery bracket and an inner wall of the housing assembly. The battery bracket can rotate about the second pivot structure relative to the housing assembly to allow the battery bracket to enter and exit the accommodating cavity through the battery window. The locking structure can lock the battery bracket within the accommodating cavity in a state in which the battery bracket closes the battery window. By establishing a structural connection relationship between the battery bracket and the inner wall of the housing assembly by means of the second pivot structure and the locking structure, and by using the housing assembly as a structural mounting carrier for the battery assembly, a count of related connecting parts may be effectively reduced and the full utilization of the structure and space of the housing assembly may be realized, which is conducive to the miniaturization and lightweight design of the device. At the same time, by adjusting the battery bracket, it is convenient to replace the battery and maintain the integrity of the overall external structure of the device.