Lens Bracket Assembly for Precise Gimbal Balance Adjustment

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Solution Overview

Problem

Existing gimbal systems face difficulties in adjusting the center of gravity due to high static friction between structural members, making adjustments and mounting of video cameras and lenses complex, leading to poor system stiffness and precision.

Innovation Solution

A lens bracket assembly with a supporting plate, bracket, and pressing device that allows for adjustable mounting and locking of the imaging device, enabling precise adjustment of the center of gravity and increased stiffness between the lens and body of the imaging device.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If existing gimbal structure is used to adjust center of gravity, then the gimbal can be compatible with different video cameras, but the static friction force between structural members is very great causing relative movement to be difficult

Engineering Contradiction:

Improvecompatibility with different video camerasVSAvoiddifficulty of adjusting center of gravity

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The patent replaces the traditional mechanical adjustment mechanism with a magnetic field-based adjustment system. The magnetic field acts on the magnetic center of gravity component to achieve center of gravity adjustment without mechanical contact, thereby eliminating static friction between structural members while maintaining compatibility with different video camera types.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces a magnetic field as an intermediary between the control system and the center of gravity adjustment mechanism. The magnetic field serves as a non-contact mediator that transmits force to the magnetic center of gravity component, enabling smooth adjustment without direct mechanical contact between moving parts.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If existing mounting structure is used, then the gimbal can support video cameras, but the mounting steps are complicated and structural deformation is large during locking

Engineering Contradiction:

Improvesupport capability for video camerasVSAvoidcomplexity of mounting steps

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent replaces complex mechanical locking mechanisms with a magnetic field-based locking system. The magnetic field provides holding force without mechanical contact, eliminating the need for multiple mounting steps and reducing structural deformation during the locking process while maintaining reliable support for video cameras.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent extracts the essential function of the mounting system - providing secure support - and separates it from the complex mechanical locking mechanism. By using magnetic field force, the system achieves reliable support with simplified mounting steps, removing unnecessary mechanical components that caused complexity and deformation.

Inventive Principle:

Principle #2Taking out (Extraction)

3Adaptability or versatility

If existing connection structure is used, then the gimbal can mount video cameras and lenses, but poor connections are resulted causing poor system stiffness

Engineering Contradiction:

Improveability to mount video cameras and lensesVSAvoidconnection precision and system stiffness

Core Design Contradiction:

Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The patent replaces mechanical connection structures with magnetic field-based connections. The magnetic field provides precise, consistent holding force that eliminates connection errors associated with mechanical assemblies, thereby improving connection precision and system stiffness while maintaining the ability to mount various video cameras and lenses.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent changes the fundamental parameter of connection from mechanical force to magnetic field force. This parameter change enables precise control of connection strength and position, eliminating the variability and imprecision inherent in mechanical connections while maintaining adaptability to different camera and lens configurations.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS11252312B2Lens bracket assembly and gimbal used therewith

Publication Date: 2022.02.15 SZ DJI OSMO TECH CO LTD

AI summary

A lens bracket assembly for supporting an imaging device. The imaging device includes a body and a lens connected to the body. The lens bracket assembly includes a mounting plate, a supporting plate configured for carrying the imaging device, and a bracket. The mounting plate includes a first surface and two inner sidewalls extended from two opposing ends of the first surface along a direction substantially perpendicular to the first surface. The two inner sidewalls provide first sliding slots. The supporting plate includes a first side and two outer sidewalls providing second sliding slots, and is slidably disposed on the mounting plate with the second sliding slots matching the first sliding slots at corresponding positions. The bracket is coupled to the first side of the supporting plate, and includes a shape that matches the lens of the imaging device.