Assembly Tool for Motor Vehicle Window Glass Alignment
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Solution Overview
Problem
Current methods for aligning the upper window glass edge parallel to the header profile in motor vehicles with automatic window regulators, especially those with a clip in slider at the front rail and a clamp slider at the rear side rail, are prone to misalignment due to tilting and require manual or unreliable tools, which are not robust or convenient.
Innovation Solution
An assembly tool with a main body and hook element that interposes between the window side edge and side rail to eliminate tilting and ensure parallel alignment, allowing vertical movement for mounting, and can be easily removed by rotating around a defined point after the glass is locked to the drive mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If manual or automated alignment without tools is used, then the alignment process is simple, but the manufacturing precision and reliability are poor due to tilting and tolerances
Solution Approach 1:
The patent introduces an alignment tool as an intermediary device between the window glass and the door frame. This tool includes a support element that engages with the window glass and a positioning element that engages with the door frame, providing a reliable geometric reference that eliminates tilting and ensures accurate parallel alignment during the mounting process.
Solution Approach 2:
The alignment tool is designed to be positioned and fixed before the final mounting of the window glass. The tool establishes the correct parallel alignment in advance, and the window glass is then mounted while the tool is still in place, ensuring that the alignment is achieved before the glass is permanently fixed to the drive mechanism.
2Manufacturing precision
If plastic blocks are used to stop glass movement, then parallel setting is achieved, but the glass is pushed too deep into the clamp slider causing misalignment
Solution Approach 1:
Instead of using plastic blocks that directly contact and push the glass, the patent employs an alignment tool with a support element that engages with the window glass at a distance from the clamp slider. This intermediary approach provides the necessary stopping function without transmitting excessive force to the glass, thereby preventing the glass from being pushed too deep into the clamp slider.
Solution Approach 2:
The alignment tool is designed with separate functional elements: a support element that contacts the window glass, a positioning element that contacts the door frame, and a connection element that links them. This segmentation allows the tool to provide precise parallel alignment while isolating the glass from excessive forces that would cause misalignment in the clamp slider.
3Ease of operation
If the glass is allowed to tilt within side rails during mounting, then the mounting process is flexible, but misalignment occurs between upper glass edge and header profile
Solution Approach 1:
The alignment tool serves as an intermediary that temporarily constrains the window glass during mounting. The tool's support element engages with the glass and the positioning element engages with the door frame, creating a rigid geometric reference that eliminates tilting. This allows flexible mounting operations while ensuring precise parallel alignment is maintained throughout the process.
Solution Approach 2:
The alignment tool is designed to be dynamically adjustable and removable. During the mounting process, the tool provides rigid constraints to prevent tilting. Once the window glass is securely fastened to the drive mechanism, the tool can be easily removed, allowing the system to transition from a constrained state to its final operational state without compromising the achieved alignment.
Data Source
Figure 1~2
Figure 3
Figure 4a~4c
AI summary
The invention relates to an assembly tool (10) for moveable side door window of a motor vehicle to align upper window glass edge (7) parallel to a header profile (8), eliminating the fact that the window glass (9) during mounting condition, when the glass is not yet locked to its drive mechanism, is tiltable to some extent within the side rails which could cause misalignment, characterised in that the assembly tool (10) comprises a main body which is configured to be positioned on the upper glass edge (7), and a hook element (1) which is configured to interpose into one side gap between window side edge and one side rail (6) with a spacer portion (5) of the hook element (1) in order to eliminate the tilting degree of freedom during the mounting process, but still enabling vertical movement of the glass (9) within the side rails during mounting process.