Wireless Coil Transmission Mechanism Without Winding Frames

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Solution Overview

Problem

Conventional laser ranging apparatuses require winding frames with long mold design cycles and large sizes, hindering the development of thinner and more lightweight designs.

Innovation Solution

A signal transmission mechanism that adjusts the distance between transmitting and receiving coils by altering the positions of the transmitting and receiving assemblies, eliminating the need for winding frames and enabling wireless power supply, thus facilitating thinner and more lightweight laser ranging apparatuses.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If winding frames are used for wireless power transmission, then power transmission function is achieved, but device size and weight increase

Engineering Contradiction:

Improvewireless power transmissionVSAvoiddevice weight

Core Design Contradiction:

Use of energy by moving objectVSWeight of moving object

Solution Approach 1:

The patent removes the winding frame structure from the system and replaces it with a flexible circuit board that has coils directly printed on it. This extraction of the unnecessary frame structure reduces device weight and size while maintaining the wireless power transmission function through the printed coils on the flexible substrate.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent replaces the mechanical winding frame structure with a flexible circuit board that can be bent and shaped as needed. This substitution eliminates the rigid mechanical frame while maintaining the electrical connection and magnetic field generation required for wireless power transmission, thereby reducing overall device weight and size.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Use of energy by moving object

If winding frames are used for wireless power transmission, then power transmission function is achieved, but development cycle increases

Engineering Contradiction:

Improvewireless power transmissionVSAvoidmold design cycle

Core Design Contradiction:

Use of energy by moving objectVSLoss of time

Solution Approach 1:

The patent replaces the mechanical winding frame requiring mold design with a flexible circuit board where coils are printed directly using PCB manufacturing techniques. This substitution eliminates the need for complex mold design and manufacturing, significantly reducing the development cycle while maintaining wireless power transmission functionality.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent changes the manufacturing approach from mechanical assembly requiring molds to printed circuit board fabrication. This parameter change in the manufacturing process eliminates the mold design cycle and enables faster prototyping and production of wireless power transmission devices.

Inventive Principle:

Principle #35Parameter changes

3Use of energy by moving object

If winding frames are used, then wireless power transmission is achieved, but device thickness increases

Engineering Contradiction:

Improvewireless power transmissionVSAvoiddevice thickness

Core Design Contradiction:

Use of energy by moving objectVSLength of moving object

Solution Approach 1:

The patent extracts and removes the winding frame structure that adds thickness to the device. By using a flexible circuit board with printed coils, the system achieves wireless power transmission without the additional thickness required by mechanical frames, enabling thinner device designs.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent employs a flexible circuit board as the substrate for the coils, which can be made very thin compared to rigid winding frames. This use of flexible thin film technology enables the wireless power transmission function to be integrated into thin device profiles without requiring the thickness of traditional mechanical frame structures.

Inventive Principle:

Principle #30Flexible shells and thin films

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 mechanism enhances signal transmission efficiency, reduces development time, and allows for consistent appearance without the need for winding frames, enabling thinner and more lightweight laser ranging apparatuses.

Implementation Method 1

The transmitting coil supplies electricity to the receiving coil by wireless electricity transmission

Methodology Applied

Scientific EffectElectromagnetic induction: Electromagnetic Induction

Data Source

PatentEP4647810A1Signal transmission mechanism, laser ranging apparatus, and mobile robot

Publication Date: 2025.11.12 SHENZHEN LDROBOT CO LTD

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AI summary

Disclosed in the present application are a signal transmission mechanism, a laser ranging apparatus, and a mobile robot. The signal transmission mechanism of the present application comprises a transmitting module and a receiving module, the transmitting module being provided with a transmitting coil and a transmitting assembly, the receiving module being provided with a receiving coil and a receiving assembly, and the receiving assembly and the transmitting assembly being oppositely disposed. The transmitting coil is disposed on the transmitting assembly, and the receiving coil is disposed on the receiving assembly. The signal transmission mechanism provided in the embodiments of the present application is not limited by fixed structure heights of winding frame molds, so that newly developed model structures can be designed to be lighter and thinner.