Vehicle Seat Reinforcement for Child Restraint Sinking Prevention
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Solution Overview
Problem
Conventional vehicle seat structures fail to prevent the front end of a child restraint system from sinking into the seat cushion during a forward impact, leading to increased component count and weight due to the need for additional strength members.
Innovation Solution
A vehicle seat design featuring sliding rails with locking mechanisms, a reinforcement structure between the side frames that prevents sinking, and an inclined coupling surface for the device mechanism, allowing for reduced components and weight while ensuring stable child restraint.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a pipe material is used as a strength member to prevent the front end of the child restraint system from sinking, then the sinking prevention function is improved, but the number of components and weight increase
Solution Approach 1:
The patent combines the strength member and the sinking prevention function into a single integrated structure. The side frame is designed to extend forward to directly support the front end of the child restraint system, eliminating the need for a separate pipe material strength member. This merging of functions reduces the number of components while maintaining the sinking prevention capability.
2Object-affected harmful factors
If a strength member is added to prevent sinking, then the sinking prevention function is improved, but the weight of the seat increases
Solution Approach 1:
The strength member function is merged into the side frame structure itself, which extends forward to support the child restraint system. This integration eliminates the need for additional weight-bearing components while maintaining structural integrity and sinking prevention capability.
3Object-affected harmful factors
If the pipe material is positioned to support the child restraint system, then the sinking prevention is improved, but the coupling of device mechanism becomes difficult due to obstruction by the lock release handle
Solution Approach 1:
The patent positions the coupling surface on the side frame in a spatial location that is not obstructed by the lock release handle. By strategically placing the coupling surface at a different position and orientation, the design allows the device mechanism to be coupled without interference, while the side frame continues to provide sinking prevention support.
Data Source
AI summary
To provide a vehicle seat that can prevent a front end portion of a child restraint system from sinking downward into a seat cushion when a forward impact force is applied to a vehicle body, and can also reduce the number of components and achieve weight saving. The vehicle seat includes a seat cushion and a slide rail 2, a locking mechanism is provided at the slide rail 2, a lock release handle 3 is suspended between the pair of right and left slide rails 2, the lock release handle 3 includes a first handle portion 3A and a second handle portion 3B, a front end portion of a reinforcement 23 is fixed to a front panel 22, the reinforcement 23 is provided with a coupling surface 31 to which a device mechanism 40 is coupled, the coupling surface 31 is inclined forwardly upward, and the coupling surface 31 is located on a front outer side from the second handle portion 3B as viewed from a direction perpendicular to the coupling surface 31.