Wind noise and water leaks in a new vehicle can be a significant source of customer dissatisfaction, create a perception
of poor quality, and cause warranty expenses. Proper adjustment of hinges and door latches while the car is in the factory and
the doors are being mounted can eliminate these problems. In the past, vehicle assembly technicians
guessed about where to position the hinges and latches and then slid a piece of paper between the body and
weather strip to feel the amount of pull in different locations.
With the I-Scan system, assembly technicians now have an electronic
“feeler” gauge that measures contact pressure while also acting as a direct feedback mechanism.
Technicians can use the gauge to help them optimize seal pressure and deflection around the door frame.
The I-Scan system is an intuitive, visual feedback tool that easily measures and displays door seal
pressures on a PDA or PC screen. The system enables the assembly technician to immediately see how the door seal force changes as he makes adjustments to the door latches and hinges as they mount the door. Having a tight door seal reduces air leaks and wind noise in the passenger compartment and helps eliminate water leaks. This system can also be used to characterize and benchmark seal pressures and designs.
Measurement Types
Locate:
Gaps in seals
Weak seals
Low or high pressure regions
Adjust door hinge and latch
Measure door closure forces
Reduce high pressures near weld beads
Increase low pressures at spot-weld dimples
Validation testing
Competitive benchmarking
Benefits
Help reduce window noise
Eliminate water leaks
Improve quality
Door seal pressure profile as latch is adjusted and door is mounted Graph displaying Pressure vs. Distance along the seal during a door seal adjustment
Handheld PDA
Used by
Automobile, truck and bus OEMs
Weather strip suppliers
Door and window manufacturers
Typical sensors used in this application
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I-Scan System
