Rotatable Child Car Seat With Eccentric Swivel and Locking
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Solution Overview
Problem
Existing car safety seats are cumbersome to position and remove, requiring caregivers to bend and arch their backs, which can be strenuous and inefficient, especially when rotating the seat for easy access.
Innovation Solution
A rotatable car safety seat design that allows for eccentric rotation and orientation change, enabling the seat to swivel and move closer to the rear door, reducing the need for excessive bending and incorporating a synchronized movement mechanism for easy one-handed operation, along with a locking mechanism for safety and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the safety seat is made rotatable to improve accessibility, then the ease of operation is improved, but the device complexity increases
Solution Approach 1:
The safety seat is designed with a rotatable mechanism that allows dynamic repositioning between fixed and rotated positions. The movement mechanism enables the seat to rotate about a central axis and deviate from it, providing adaptability for different access scenarios while maintaining stability when locked in position.
Solution Approach 2:
The rotatable mechanism is divided into separate functional components: a movement mechanism for rotation about the central axis, a locking mechanism for securing positions, and a deviation mechanism for changing orientation. This segmentation allows each component to be optimized independently while working together to provide easy operation.
2Ease of operation
If the seat is rotated towards the rear door to reduce bending, then the ease of operation is improved, but the stability of the seat may be compromised
Solution Approach 1:
The locking mechanism is designed to secure the seat in the rotated position before the child is removed. This preliminary locking action ensures that the seat maintains its rotated orientation during the child transfer process, providing stability while enabling easy access without requiring the caregiver to bend excessively.
Solution Approach 2:
The locking mechanism uses simple mechanical components that provide reliable locking without adding significant complexity or weight. The design prioritizes functional reliability over sophisticated mechanisms, ensuring stability in the rotated position through straightforward mechanical engagement.
Data Source
AI summary
A rotatable safety seat assembly comprises an upper portion with a seat and a seat rotational element having a fixed connection to the seat such that it is rotatable together with seat about a seat rotational axis, a lower portion configured for being mounted to a passenger's seat of a car and having a central axis spaced from the seat rotational axis. The seat assembly further comprises a movement mechanism connected to the seat rotational element and operable to translate rotation of the seat rotational element about the seat rotational axis into movement of the seat rotational element along a circular trajectory around the central axis and vice versa. The assembly can further comprise a locking mechanism operable to selectively enable a first unlocked state in which the movement mechanism is operable to enable the rotational movement of the seat with the seat rotational element about the central rotational axis of the lower portion while the locking mechanism prevents the rotational movement of the seat with the seat rotational element about the seat rotational axis, and a second unlocked state in which the seat with the seat rotational element is free to rotate about the seat rotational axis and the movement mechanism is operable to translate the rotational movement of the seat with the seat rotational element about the seat rotational axis into the rotational movement of the seat with the seat rotational element about the central rotational axis and vice versa.