Sliding Glazing Unit Assembly for Precise Y-Axis Fixation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for manufacturing vehicle glazing with vertical mobility face challenges in controlling lateral fixing tolerance and require complex adhesive application orientations, leading to imprecise and time-consuming production processes.
Innovation Solution
A method involving the use of fast-curing plastic material and adhesive injection within a U-shaped glass holder, secured by foam strips, allowing for precise fixation of the glazing without waiting for adhesive hardening, enabling high precision and faster production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If liquid adhesive is used to fix the glass holder, then bonding strength is improved, but the manufacturing process becomes complex and time-consuming due to orientation requirements and hardening delays
Solution Approach 1:
The adhesive system is segmented into two distinct components: a fast-curing plastic material for immediate mechanical fixation and a liquid adhesive for subsequent chemical bonding. This segmentation allows each material to perform its specific function optimally without interfering with the other, enabling rapid production while maintaining strong bonds.
Solution Approach 2:
The fast-curing plastic material is applied first to create immediate mechanical fixation of the glass holder to the glass. This preliminary action establishes positional stability and mechanical strength before the liquid adhesive is applied, eliminating the need to wait for adhesive hardening during assembly operations.
2Stability of the object's composition
If vertical orientation is used for adhesive application, then liquid adhesive containment is improved, but positioning precision along Y-axis deteriorates due to gravity reference limitations
Solution Approach 1:
The fast-curing plastic material acts as an intermediary between the glass holder and the liquid adhesive. It provides immediate mechanical fixation and positional stability, allowing the liquid adhesive to be applied without orientation constraints. The plastic material mediates the bonding process, enabling precise Y-axis positioning while the adhesive cures.
3Strength
If mechanical fixation is delayed until adhesive hardening, then bonding strength is improved, but production time increases due to waiting for complete polymerization
Solution Approach 1:
The bonding process is segmented into two phases: immediate mechanical fixation using fast-curing plastic material, and subsequent chemical bonding using liquid adhesive. This segmentation eliminates the need to wait for adhesive hardening before achieving mechanical strength, as the plastic material provides immediate fixation while the adhesive cures in the background.
Solution Approach 2:
The curing time parameter of the fixation material is changed from slow (traditional adhesive) to fast (plastic material curing in maximum 60 seconds). This parameter change enables mechanical fixation to be completed rapidly, dramatically reducing production time while maintaining bonding strength through the combined action of both materials.
4Manufacturing precision
If rigid fixation materials are used, then positioning precision is improved, but compensation for thermal expansion deteriorates
Solution Approach 1:
The fixation system uses a composite of two materials with different properties: fast-curing plastic material for immediate mechanical fixation and liquid adhesive for chemical bonding. The foam strips incorporated into this composite provide flexibility and thermal expansion compensation, while the plastic and adhesive materials provide precision and strength. This composite approach combines rigid and flexible properties to achieve both precision and adaptability.
Solution Approach 2:
Foam strips are incorporated into the fixation system to provide flexible compensation for thermal expansion. These flexible elements can expand and contract with temperature changes while maintaining the overall structural integrity and positioning precision provided by the fast-curing plastic material and adhesive.
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 method achieves precise fixation along the Y-axis with a tolerance of ±0.5 mm, reduces manufacturing time, and lowers costs by eliminating the need for adhesive hardening delays, while incorporating flexible materials for expansion compensation.
Implementation Method 1
a fast-curing plastic material is injected inside said U-shaped part... The fast-curing plastic material, once it has hardened, mechanically secures the position of the glass holder relative to the glass
Implementation Method 2
an adhesive is injected inside said U-shaped part, between said two pairs of foam strips of said fixing area
Implementation Method 3
integrates in its fixing zone(s) flexible material: foam strips... it makes it possible to create a compensation region for the different expansion coefficients of the different materials used for the glazing and for the means allowing its mobility
Data Source
Figure 1~2
Figure 3~4
Figure 5~7
AI summary
The invention relates to a method for manufacturing a vehicle glazing unit (1) and to a glazing unit (1) in which: - two pairs (7, 7') of foam strips (71, 72, 73, 74) are applied and fastened, each to a longitudinal edge of a fastening region (F, F'), - a pane holder (6, 6') having a U-shaped part fitting over an edge of the pane and the two pairs (7, 7') of foam strips, - a rapidly curing plastics material is injected inside the U-shaped part, between the two foam strips of each pair (7, 7'), and - an adhesive is injected inside the U-shaped part, between the two pairs (7, 7'). Figure for the abstract: [Fig. 4]