Plastic Tailgate Glazing With Integrated Light Assembly Molding
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Solution Overview
Problem
Existing vehicle tailgates with integrated light assemblies face issues such as complexity, cost, labor-intensive assembly, aerodynamic inefficiencies, and aesthetic disruptions due to multiple components and seams, which hinder compliance with lighting regulations and overall vehicle performance.
Innovation Solution
A method of manufacturing a plastic glazing for vehicle tailgates using a multi-shot injection molding process that integrates light units and other components into a seamless, one-piece monolithic structure, reducing components and seams through techniques like three-shot injection molding and mold cavity adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If multiple separate light components are assembled to form a light assembly, then the lighting functionality is achieved, but the assembly complexity and labor intensity increase
Solution Approach 1:
The patent combines multiple separate light components (lamps, housings, lenses, reflectors) into a single integrated light assembly that is molded as one piece. This merging eliminates the need for separate assembly steps and reduces the number of parts, directly resolving the contradiction between achieving lighting functionality and reducing assembly complexity
Solution Approach 2:
The integrated light assembly performs multiple functions (housing, lens, reflector, lamp holder) within a single component structure. This multi-functionality allows the same component to replace several separate parts, reducing assembly complexity while maintaining all necessary lighting functionalities
2Shape
If multiple separate vehicle components are used, then the functionality is achieved, but the number of seams and openings increases, affecting aesthetics and aerodynamics
Solution Approach 1:
The patent merges the light assembly with the tailgate body into a single integrated structure where the light assembly appears as a seamless portion of the tailgate. This eliminates visible seams and openings between separate components, improving surface continuity and aerodynamics while maintaining all light assembly functionalities
Solution Approach 2:
The light assembly is nested within the tailgate structure such that it forms an integral part of the overall component. The light assembly is positioned and integrated within the tailgate body, creating a unified appearance without external seams or gaps
3Productivity
If separate light components are assembled, then the light assembly can be configured, but the assembly time and labor costs increase
Solution Approach 1:
The light assembly is pre-configured and integrated into the tailgate structure during the molding process itself, rather than being assembled separately afterward. This preliminary integration of multiple components into a single unit eliminates subsequent assembly steps, directly reducing assembly time and increasing productivity
Solution Approach 2:
By combining multiple light components into a single integrated assembly that is molded as one piece, the patent eliminates the need for separate assembly operations. This merging of components into a unified structure dramatically reduces assembly time and labor requirements
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
This approach reduces labor costs, enhances aesthetic appearance, improves aerodynamic performance, and ensures compliance with vehicle lighting regulations by integrating light units within a unified, seamless plastic glazing.
Implementation Method 1
A method of manufacturing a plastic glazing for vehicle tailgates includes injecting a first material into a molding apparatus to form a first component of the plastic glazing
Implementation Method 2
injecting a second material into the molding apparatus to form a second component of the plastic glazing, wherein the second component combines with at least the first component
Data Source
AI summary
A method of manufacturing a plastic glazing of a tailgate of a vehicle, the method comprising: injecting a first material into a molding apparatus to form a first component of the plastic glazing, wherein the first component comprises a panel of the plastic glazing; injecting a second material into the molding apparatus to form a second component of the plastic glazing, wherein the second component combines with at least the first component, wherein at least a portion of the first component and the second component comprises a transparent cover of a molded light assembly; and injecting a third material into the molding apparatus to form a third component, wherein the third component combines with at least the first component.