Child Safety Seat Backrest Locking for Easy Height Adjustment
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Solution Overview
Problem
Conventional child safety seats with height-adjusting mechanisms often have complex structural designs and inconvenient operation, failing to adequately accommodate children of different heights.
Innovation Solution
A child safety seat with a simplified height-adjusting mechanism featuring a tooth-shaped structure on the engaging board, an engaging mechanism with pivotally connected engaging members, and a driving device that allows the backrest to move upwardly and downwardly or fix at specific heights, facilitated by a user-friendly operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional height adjusting mechanism is used to adjust backrest height, then the backrest can be adjusted within a specific range, but the structural design becomes complicated
Solution Approach 1:
The height adjusting mechanism is segmented into distinct functional components: a driving device with a driving member, an engaging member with engagement protrusions, and a backrest with engagement grooves. This segmentation allows each component to perform its specific function independently, simplifying the overall structure while maintaining adjustment capability across multiple predetermined positions.
2Adaptability or versatility
If a conventional height adjusting mechanism is used, then backrest height can be adjusted, but the operation becomes inconvenient
Solution Approach 1:
The engaging member is designed to automatically engage with the backrest at predetermined positions through the interaction of engagement protrusions and grooves. The driving member, when actuated, automatically drives the engaging member to engage or disengage from the backrest, eliminating the need for manual intervention at each adjustment position and making operation convenient.
3Device complexity
If a simplified engaging mechanism is used, then structure and manufacture cost are reduced, but the ability to securely hold backrest at specific heights may be compromised
Solution Approach 1:
The engaging member combines multiple functions into a single component: it provides engagement protrusions that fit into grooves on the backrest, acts as a driving interface for the driving member, and maintains continuous contact with the backrest during adjustment. This merging ensures secure positioning at all predetermined heights while keeping the structure simple and cost-effective.
Data Source
AI summary
A child safety seat includes a seat body, an engaging board, a backrest, and an engaging mechanism. The engaging board is connected to the seat body. A tooth-shaped structure is formed on the engaging board. The backrest is movably disposed on the engaging board. The engaging mechanism is disposed between the engaging board and the backrest. The engaging mechanism includes an engaging member and a driving device. The engaging member is pivotally connected to the backrest for engaging with the tooth-shaped structure. The driving device is pivotally connected to the engaging member and movably connected to the backrest. When the driving device moves between a locking position and a releasing position relative to the backrest, the driving device drives the engaging member to rotate relative to the backrest.