Vehicle Seat Weight Sensor Mounting for Tolerance and Noise Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The horizontal mounting type of weight detection sensors in vehicle seats experiences assembling tolerance issues, leading to errors in passenger weight detection due to rotation and increased contact noise, which affects airbag inflation accuracy.
Innovation Solution
A passenger distinguishing apparatus with a weight detection sensor assembled in a horizontal direction of a vehicle seat, utilizing a first and second damper to absorb assembling tolerance, along with sleeves to prevent shaking, minimizes errors and noise by stabilizing the sensor's position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of stationary object
If a weight detection sensor is assembled in a horizontal direction of the seat, then weight and cost can be reduced, but assembling tolerance causes rotation and detection error
Solution Approach 1:
A damper is introduced as an intermediary component between the weight detection sensor and the seat structure. This damper absorbs assembling tolerance and prevents rotation of the horizontally mounted sensor, thereby maintaining detection accuracy while preserving the weight and cost benefits of horizontal mounting
Solution Approach 2:
The damper provides beforehand cushioning by pre-absorbing assembling tolerance before it can cause rotation or detection errors. This compensatory measure ensures that even with horizontal mounting, the sensor maintains accurate weight detection
2Ease of manufacture
If a weight detection sensor is assembled in a horizontal direction of the seat, then cost can be reduced by not providing separate brackets, but assembling tolerance causes rotation and detection error
Solution Approach 1:
The damper serves as a mediator that absorbs assembling tolerance without requiring complex bracket structures. This simple intermediary component maintains detection accuracy while preserving the cost benefits of simplified assembly
Solution Approach 2:
The damper changes the mechanical parameters of the assembly by introducing elasticity and tolerance absorption, allowing the sensor to remain stable and accurate despite horizontal mounting and assembling variations
3Productivity
If a weight detection sensor is assembled in a horizontal direction of the seat, then production can be simplified, but contact noise increases due to assembling tolerance
Solution Approach 1:
The damper acts as a noise-absorbing intermediary between the sensor and the seat structure. It eliminates contact noise generated by assembling tolerance while maintaining the simple horizontal mounting structure that enables efficient production
4Weight of stationary object
If a weight detection sensor is assembled in a horizontal direction of the seat, then weight can be reduced, but assembling tolerance causes rotation by passenger weight
Solution Approach 1:
The damper serves as a stabilizing intermediary that prevents rotation of the lightweight horizontally-mounted sensor when passenger weight is applied. It maintains sensor stability while preserving the weight reduction benefits of horizontal mounting
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 solution reduces production costs, improves accuracy in passenger weight detection, and minimizes contact noise while maintaining a reduced weight and cost structure.
Implementation Method 1
a first damper for absorbing assembling tolerance of the weight detection sensor is disposed between the first bracket and the weight detection sensor
Data Source
AI summary
A passenger distinguishing apparatus is provided. The passenger distinguishing apparatus includes: a weight detection sensor that is assembled in a vehicle seat to detect a passenger's weight; and a first bracket and a second bracket that assemble the weight detection sensor in the seat, wherein the weight detection sensor has a length direction in a horizontal direction of the seat, and a first damper for absorbing assembling tolerance of the weight detection sensor is disposed between the first bracket and the weight detection sensor. Therefore, assembling tolerance can be absorbed with minimum parts, production can be improved, contact noise can be reduced, and a weight and cost can be reduced.