Two-Part Toolless Backrest Support for Office Chair Assembly
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Solution Overview
Problem
The installation of office chair backrests is often complicated and requires special tools, making it difficult for amateurs to ensure correct fitting, which can lead to damage or injury during use.
Innovation Solution
A backrest support designed in two toolless connectable parts with a manually actuable lock, allowing for secure and error-proof installation and removal without tools, using a push-in wedge connection and toggle lever mechanism for secure locking and tolerance compensation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the backrest support is designed as a single integrated part, then the structural strength and stability are improved, but the ease of assembly and disassembly deteriorates
Solution Approach 1:
The backrest support is divided into two separate support parts that can be connected and disconnected. This segmentation allows the backrest to be easily assembled and disassembled while maintaining structural integrity through the connection mechanism between the two parts.
2Reliability
If a special tool is used for installation, then the reliability of correct fitting is improved, but the ease of operation deteriorates
Solution Approach 1:
The connection mechanism is designed to be self-aligning and self-securing through manual operation. The releasable connection with manual locking allows the user to correctly assemble the backrest without special tools, while the design ensures proper alignment and secure fitting through the interaction between the two support parts.
3Adaptability or versatility
If the backrest is frequently assembled and disassembled, then the adaptability to location changes is improved, but the durability deteriorates
Solution Approach 1:
The backrest support system is designed with dynamic characteristics, allowing easy transition between assembled and disassembled states. The releasable connection mechanism enables repeated assembly and disassembly cycles while maintaining durability through its robust design that accommodates frequent operational changes.
4Ease of operation
If the connection between support parts is made loose for easy assembly, then the ease of operation is improved, but the stability deteriorates
Solution Approach 1:
The two support parts are designed with pre-configured connection features that guide proper alignment during assembly. The connecting surfaces and locking mechanisms are preliminarily positioned to ensure that when assembled, the connection achieves both ease of assembly and stable, play-free operation in the final state.
Data Source
AI summary
The invention relates to a backrest support for a seating furniture, in particular for an office chair.In order to provide a piece of seating furniture having a backrest, in the case of which particularly simple and safe installation and removal of the backrest is possible, it is proposed to design the backrest support (2) in two parts, having a first support part (4), which is connectable to a second support part (5) without a tool, with a releasable connection being formed, wherein, in the assembled state, the position of the two support parts (4, 5) with respect to each other can be secured without a tool by means of a lock (6).