Elastic Fixing Member for Light Guide Plate Assembly

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Solution Overview

Problem

Existing fixing structures for light guide plates in in-vehicle displays, such as those using rubber blocks or tapes, face challenges in achieving high accuracy and reliability, leading to increased labor costs and operational difficulties in assembly and reworking.

Innovation Solution

An elastic fixing member with a body part and self-fixation part, designed in various shapes such as curved or straight, is used to securely attach the light guide plate to a backplane, featuring a rod and cap self-fixation mechanism, facilitating easy assembly and secure fixation through injection molding.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If tapes are used to fix the light guide plate, then the fixation can be achieved, but the assembly and reworking become difficult, and labor cost increases

Engineering Contradiction:
Improvefixation reliabilityVSAvoidassembly ease
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The fixing structure is divided into two distinct parts: a body part that contacts and fixes the light guide plate, and a self-fixation part that secures the entire fixing member to the backplane. This segmentation allows each part to be optimized for its specific function, improving both fixation reliability and assembly ease.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The self-fixation part is designed to automatically secure itself to the backplane without requiring additional fasteners or complex assembly steps. The elastic deformation mechanism enables the fixing member to clamp onto the backplane inherently, eliminating the need for tapes or separate fixation components, thereby simplifying assembly and reducing labor costs.

Inventive Principle:
Principle #25Self-service

2Reliability

If rubber blocks are used to fix the light guide plate, then fixation is achieved, but operability in terms of assembly is relatively less

Engineering Contradiction:
Improvefixation stabilityVSAvoidassembly operability
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The fixing function and the self-securing function are merged into a single integrated fixing member. The body part and self-fixation part form one component that performs both fixing the light guide plate and securing to the backplane, eliminating the need for separate rubber blocks and improving assembly operability.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The elastic properties of the fixing member are utilized to enable automatic securing through deformation. By changing the physical state from rigid (rubber blocks requiring manual placement) to elastic (automatically deforming to secure), the assembly process becomes more operational and easier to perform.

Inventive Principle:
Principle #35Parameter changes

3Productivity

If existing fixing structures are used, then light guide plate fixation is achieved, but high accuracy and high reliability of fixation cannot be ensured

Engineering Contradiction:
Improvefixation accuracyVSAvoidfixation reliability
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The fixing member utilizes elastic deformation to dynamically adapt to the backplane surface and secure itself reliably. The elastic properties allow the fixing member to maintain consistent contact force and positioning accuracy, ensuring both high fixation accuracy and high reliability that rigid structures cannot achieve.

Inventive Principle:
Principle #15Dynamics

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 elastic fixing member provides a stable and reliable fixation of both the light guide plate and itself on the backplane, enhancing the fixation effect while reducing assembly costs and improving accuracy, suitable for applications in transportation fields.

Implementation Method 1

elastic fixing member comprises: a body part and a self-fixation part, wherein the self-fixation part is configured to fix the elastic fixing member on a corresponding backplane in use

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentUS10642081B2Elastic fixing member for fixing light guide plate, corresponding backplane and liquid crystal display device comprising both
Publication Date: 2020.05.05 BOE TECHNOLOGY GROUP CO LTD
  • US10642081B2 patent drawing
  • US10642081B2 patent drawing
  • US10642081B2 patent drawing

AI summary

The present disclosure relates to the technical field of fixation of light guide plates, and in particular discloses an elastic fixing member for fixing a light guide plate, a backplane for use in conjunction therewith, and a liquid crystal display device comprising both. The elastic fixing member comprises: a body part and a self-fixation part, wherein the self-fixation part is configured to fix the elastic fixing member on a backplane in use. Correspondingly, the backplane comprises: a base and a side wall. Furthermore, a fixing structure and a mounting guide structure are arranged on the side wall of the backplane. The fixing structure is configured to maintain the fixation of the elastic fixing member on the backplane together with the self-fixation part of the elastic fixing member in use, and the mounting guide structure is configured to guide the elastic fixing member in use to fix it on the backplane.