Swing Dining Chair Multi-Stage Locking to Prevent Maloperation
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Solution Overview
Problem
Conventional swing dining chairs are prone to maloperation due to complex structural designs and lack of safe locking mechanisms, leading to potential safety hazards when transforming between a swing and a dining chair.
Innovation Solution
A swing dining chair with a multi-stage included-angle adjustment device and interlocking locking mechanisms, including first, second, third, and fourth locking devices, ensures safe and convenient operation by locking the seat and backrest at specific angles, preventing accidental transformation during use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple locking devices are added to prevent maloperation, then safety is improved, but device complexity increases
Solution Approach 1:
The locking mechanism is divided into multiple independent locking devices (first locking device for the swing arm, second locking device for the seat portion, third locking device for the backrest, and fourth locking device for the transforming mechanism). Each locking device independently secures a specific component, distributing the safety function across segmented elements rather than using a single complex locking system.
Solution Approach 2:
The locking devices are designed to automatically engage at predetermined positions during the transforming process. The first locking device automatically locks the swing arm when it reaches the horizontal position, and the second locking device automatically locks the seat portion when the backrest reaches the vertical position, eliminating the need for manual intervention and preventing maloperation.
2Device complexity
If a simple locking structure is used, then device complexity is reduced, but reliability of locking decreases
Solution Approach 1:
The locking mechanism is divided into multiple independent locking devices (first locking device for the swing arm, second locking device for the seat portion, third locking device for the backrest, and fourth locking device for the transforming mechanism). Each locking device independently secures a specific component, distributing the safety function across segmented elements rather than using a single complex locking system.
Solution Approach 2:
The locking devices are designed to automatically engage and disengage based on the mechanical position of the components. The automatic locking mechanism uses the motion of the swing arm and backrest to trigger the locking action, eliminating the need for external control systems or complex actuation mechanisms while maintaining high reliability.
3Ease of operation
If the backrest and seat portion form a large included angle for dining use, then comfort is improved, but safety decreases due to risk of child being thrown out
Solution Approach 1:
The backrest is designed with adjustable positioning capability, allowing it to form different included angles with the seat portion. The multi-position adjustment mechanism enables the backrest to be locked at various angles, including a smaller angle suitable for swing mode that prevents children from being thrown out, and a larger angle suitable for dining mode that provides comfort.
Solution Approach 2:
The included angle between the backrest and seat portion is changed as a variable parameter. The adjusting mechanism allows the backrest to be positioned at different angles relative to the seat portion, enabling the system to adapt to different usage scenarios (swing mode with smaller angle for safety, dining mode with larger angle for comfort).
Data Source
AI summary
A swing dining chair comprising supporting frames, swing arms and a chair body. The chair body comprises a seat and a backrest. A multi-stage included-angle adjustment device is arranged between the seat and the backrest. The swing arm is provided with a lifting base, and the seat is connected with the lifting base. A first locking device is arranged between the seat and the lifting base for locking the seat. A second locking device is provided for locking the first locking device. A third locking device is arranged between the seat and the lifting base for locking the multi-stage included-angle adjustment device. A fourth locking device is arranged between the swing arm and the supporting frame for locking the swing arm. The lifting base is provided with an unlocking mechanism for unlocking the fourth locking device. The present disclosure has a simple structure, achieves convenient operation, and avoids maloperation.