Threadless Lens Module Adhesive Bonding Design

Solution Overview

Problem

Existing lens modules with threaded connections occupy significant space, reducing screen-to-body ratios in electronic devices and are difficult to manufacture due to high precision requirements, especially for smaller volumes.

Innovation Solution

A threadless lens module design using an adhesive accommodating slot between the lens barrel and the surrounding wall, where an adhesive is dispensed to securely connect the components, simplifying the structure and improving manufacturing efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If threaded connections are used to fix the lens barrel to the bearing seat, then the connection strength is improved, but the occupied space increases and the manufacturing complexity increases

Engineering Contradiction:

Improveconnection strengthVSAvoidoccupied space

Core Design Contradiction:

StrengthVSVolume of stationary object

Solution Approach 1:

The patent replaces the mechanical threaded connection system with a chemical adhesive bonding system. The adhesive is injected into the annular space between the lens barrel and bearing seat, curing to form a bonding layer that secures the lens barrel without requiring threads. This substitution eliminates the space needed for threaded structures while maintaining connection strength through chemical bonding.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces adhesive as an intermediary substance between the lens barrel and bearing seat. This adhesive layer serves as a mediator that creates a strong bond between the two components, replacing the direct mechanical interlocking of threads. The adhesive fills the annular space and provides both bonding strength and space efficiency.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Strength

If threaded connections are used to fix the lens barrel to the bearing seat, then the connection strength is improved, but the manufacturing complexity and difficulty increase

Engineering Contradiction:

Improveconnection strengthVSAvoidmanufacturing complexity

Core Design Contradiction:

StrengthVSEase of manufacture

Solution Approach 1:

The patent replaces the mechanical threaded connection system with a chemical adhesive bonding system. The adhesive is injected into the annular space between the lens barrel and bearing seat, curing to form a bonding layer that secures the lens barrel without requiring threads. This substitution eliminates the space needed for threaded structures while maintaining connection strength through chemical bonding.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent changes the bonding mechanism from mechanical (threads) to chemical (adhesive). This parameter change in the connection method simplifies manufacturing by eliminating the need for precise thread machining, tapping operations, and thread assembly alignment. The adhesive bonding process requires only injection and curing, significantly reducing manufacturing steps and complexity.

Inventive Principle:

Principle #35Parameter changes

3Stability of the object's composition

If threaded connections are used, then the structural stability is improved, but the screen-to-body ratio decreases

Engineering Contradiction:

Improvestructural stabilityVSAvoidscreen-to-body ratio

Core Design Contradiction:

Stability of the object's compositionVSArea of stationary object

Solution Approach 1:

The patent replaces the mechanical threaded connection system with a chemical adhesive bonding system. The adhesive is injected into the annular space between the lens barrel and bearing seat, curing to form a bonding layer that secures the lens barrel without requiring threads. This substitution eliminates the space needed for threaded structures while maintaining connection strength through chemical bonding.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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 adhesive-based connection enhances bonding strength, reduces manufacturing complexity, and increases the screen-to-body ratio of electronic devices by eliminating the need for threaded connections.

Implementation Method 1

an adhesive bonding layer is formed between the lens barrel and the surrounding wall

Methodology Applied

Scientific EffectAdhesion: Adhesive

Data Source

PatentUS11156797B2Lens module

Publication Date: 2021.10.26 AAC OPTICS SOLUTIONS PTE LTD

AI summary

The present disclosure provides a lens module. The lens module includes a lens and a bearing seat matching connected to the lens; the lens includes a lens barrel, the lens barrel includes a first barrel provided with an optical aperture and a second barrel wall bending and extending from the first barrel wall; the bearing seat includes a surrounding wall around the second barrel wall; the lens is assembled on the bearing seat, the lens and the surrounding wall form an adhesive accommodating slot. The second barrel wall and the surrounding wall are bonded via the adhesive accommodating slot. Compared with related technologies, the lens module of the present disclosure occupies a smaller space, increases a screen-to-body ratio of an electronic product, and has low production difficulty.