Seat Pressure Sensor Wiring Support to Prevent Connector Warping
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Solution Overview
Problem
Existing seat designs with detectors face issues with warping and damage of connecting portions in the transmission path due to applied loads, particularly when a large load is applied around the through hole, leading to potential damage and interference with peripheral members.
Innovation Solution
Incorporating a warp restraining member with an elliptically curved outer surface, made of resin material, which is inserted into the through hole to prevent warping of the connecting portion by fixing the fastening member and end portions of the transmission path forming portions on its outer surface, and using a holder film to securely attach these components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the connecting portion is disposed inside the through hole to avoid interference with peripheral members, then the transmission path is protected from external damage, but the connecting portion is susceptible to warping and damage when large loads are applied around the through hole
Solution Approach 1:
A warp restraining member is introduced as an intermediary component inside the through hole to support the connecting portion. This mediator prevents the connecting portion from warping under load while maintaining its protected position inside the through hole, thus resolving the contradiction between protection and structural strength.
Solution Approach 2:
The warp restraining member provides beforehand cushioning support to the connecting portion before loads are applied. By pre-positioning this support structure inside the through hole, the system prepares for potential warping forces, preventing damage before it occurs while maintaining the protected configuration.
2Productivity
If the transmission path is passed through the through hole to shorten the transmission path, then signal transmission efficiency is improved, but the connecting portion becomes vulnerable to warping under applied loads
Solution Approach 1:
The warp restraining member serves as a mediator that enables the transmission path to pass through the through hole for efficient signal transmission while simultaneously providing structural support to prevent warping, thus maintaining both productivity and reliability.
Solution Approach 2:
The combination of the transmission path forming portions and the warp restraining member creates a composite structure that leverages the advantages of both components: the transmission path provides signal conduction while the restraining member provides mechanical strength, achieving both efficient transmission and structural integrity.
3Ease of repair
If the connecting portion is exposed outside the through hole for easy access, then maintenance and repair are simplified, but the connecting portion is exposed to damage from peripheral members and warping under load
Solution Approach 1:
The warp restraining member acts as an intermediary that allows the connecting portion to remain protected inside the through hole while still enabling maintenance activities. The restraining member can be accessed or manipulated to facilitate repair without exposing the vulnerable connecting portion to external damage.
Data Source
AI summary
A seat is configured to suitably restrain a warping of a connecting portion in a signal transmission path, when the connecting portion is disposed inside a through hole provided in a pad member of the seat. The seat includes: a pressure sensor that detects a seating pressure of a seat occupant; a leading wire of the transmission path that extends from the pressure sensor; a cable of the transmission path that extends from an electronic control unit for a signal output from the pressure sensor; a warp restraining member that restrains a warping of a connecting portion of the leading wire and the cable; and a through hole formed in a pad member of the seat, from one end to another end in the thickness direction of the pad member. The warp restraining member is inserted into the through hole to thereby pass the transmission path through the through hole.