Adjustable Door Glass Assembly Gap Control Mechanism

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Solution Overview

Problem

Existing door glass assemblies in vehicles face challenges in maintaining a constant gap between the door glass and the garnish, leading to uneven appearances and increased noise due to varying gaps, which complicates assembly and requires repeated adjustments.

Innovation Solution

A door glass assembly with a position adjusting part that includes a holder and an adjusting bolt, allowing for the adjustment of the slider's position to maintain a consistent gap between the door glass and the garnish by rotating the adjusting bolt, which is screw-coupled to the slider and fixed to the holder, enabling easy adjustment of the gap without exposing the mechanism internally.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If the door glass is assembled without a position adjusting part, then the assembly process is simple, but the gap between the door glass and garnish cannot be kept constant

Engineering Contradiction:
Improvegap consistencyVSAvoidassembly structure
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent applies the dynamics principle by providing a position adjusting part that allows the door glass position to be adjusted dynamically during assembly. The adjusting part includes an adjusting member that can be rotated to change the position of the door glass relative to the garnish, enabling gap consistency to be achieved while maintaining a relatively simple overall structure. This resolves the contradiction by making the system adaptable rather than fixed.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent applies parameter changes by using an adjusting member whose position can be changed through rotation. The adjusting part changes the positional parameter of the door glass relative to the garnish, allowing the gap to be precisely controlled. This enables manufacturing precision improvement through parameter adjustment without requiring complex assembly structures.

Inventive Principle:
Principle #35Parameter changes

2Manufacturing precision

If the door glass position is adjusted after assembly, then the gap consistency can be improved, but the assembly operation must be repeated or re-adjustment is required

Engineering Contradiction:
Improvegap uniformityVSAvoidassembly time
Core Design Contradiction:
Manufacturing precisionVSLoss of time

Solution Approach 1:

The patent applies preliminary action by providing the position adjusting part as an integrated component of the assembly structure, allowing gap adjustment to be performed as part of the normal assembly process rather than requiring disassembly and reassembly. The adjusting member can be accessed and operated from the interior of the vehicle, enabling precise gap control without time-consuming repeated assembly operations.

Inventive Principle:
Principle #10Preliminary action

3Ease of operation

If the slider position is fixed, then the assembly structure is simple, but the gap between door glass and garnish varies at different portions

Engineering Contradiction:
Improveappearance qualityVSAvoidslider mechanism
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent applies dynamics by transforming the fixed slider into an adjustable component. The position adjusting part is coupled to the slider and can change its position relative to the door glass, allowing the slider mechanism to adapt to different gap requirements. This maintains ease of operation by providing a user-friendly adjustment mechanism while avoiding excessive complexity through the use of a straightforward rotating adjusting member.

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

Enables easy and precise adjustment of the gap between the door glass and the garnish, maintaining a consistent appearance and reducing noise by allowing for the manipulation of the door glass's position within the vehicle, ensuring uniformity and aesthetic integrity.

Implementation Method 1

an adjusting bolt configured to be rotatably installed at the holder and be screw-coupled to a rear end of the slider

Methodology Applied
Scientific EffectScrew mechanism: Screw

Data Source

PatentUS10974576B2Adjustable door glass assembly
Publication Date: 2021.04.13 HYUNDAI MOTOR CO LTD
  • US10974576B2 patent drawing
  • US10974576B2 patent drawing
  • US10974576B2 patent drawing

AI summary

A door glass assembly includes a door frame configured to form a door of a vehicle, a door glass configured to be installed in the door frame to be ascended and descended relative to the door frame, a garnish configured to be engaged with an outer surface of the door frame so that the outer surface of the door frame is finished with the garnish, a slider installed on the door glass and having a front end received in the door frame to guide the door glass, and a position adjusting part provided on an inner surface of the door glass and configured to adjust a gap between an end portion of the door glass and the garnish.