Chair frame mechanism and chair having the same
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Solution Overview
Problem
Conventional chair frame mechanisms experience discomfort and collision interference due to complex power transmission structures, leading to poor user experience and failure to meet ergonomic design concepts.
Innovation Solution
A chair frame mechanism with a sequence component that controls the movement of the chair bracket, leg component, and back component along a preset trajectory, using a swing controlling element and sequence connecting rod to ensure orderly extension and folding, avoiding simultaneous movement and enhancing ergonomic design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single power source is used to adjust the leg component and back component, then the device complexity is reduced, but the leg component and back component move simultaneously causing collision interference and discomfort
Solution Approach 1:
The patent divides the power transmission into two independent systems: a first power transmission path for the leg component and a second power transmission path for the back component. This segmentation allows each component to be controlled independently, preventing simultaneous movement and collision interference while maintaining reasonable device complexity.
2Speed
If the chair bracket, leg component and back component move and switch positions simultaneously, then the adjustment speed is improved, but collision interference occurs and user comfort deteriorates
Solution Approach 1:
The patent implements preliminary action by designing a control mechanism that sequentially activates components. The leg component adjusts first through the first power transmission, and only after its adjustment is complete does the back component begin its adjustment through the second power transmission. This prevents collision interference and ensures user comfort while maintaining efficient adjustment speed.
3Reliability
If a complex power transmission structure is used to control component movement sequence, then the operation reliability is improved, but the device complexity increases
Solution Approach 1:
The patent employs dynamic control mechanisms including swing controlling elements, connecting rods, and guide grooves that automatically regulate the movement sequence based on real-time component positions. This dynamic approach ensures reliable sequential operation without requiring overly complex static transmission structures, achieving a balance between reliability and complexity.
Data Source
AI summary
A chair frame mechanism and a chair having the same are provided. The chair frame mechanism includes a movable component, a chair bracket, a leg component, a back component and a sequence component. The movable component is connected with the chair bracket. The leg component and the back component are pivotally connected with the chair bracket, respectively, and the back component is connected with the movable component. The sequence component is connected with the movable component and the chair bracket, respectively, and connected with the leg component and the back component by transmission, respectively. The sequence component is capable of controlling the chair bracket to move relative to the movable component along a preset trajectory, and orderly controlling the leg component and the back component to extend or fold relative to the chair bracket.