Detachable Five-Star Base with Nested Clamping for Rotation Prevention

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Solution Overview

Problem

Existing detachable five-star bases for swivel chairs suffer from insufficient structural strength, leading to easy rotation and disintegration when lifted off the ground, and existing solutions either have low structural strength or are difficult to disassemble and assemble efficiently.

Innovation Solution

A detachable five-star base design featuring clamping plates, arc-shaped groove plates, support blocks, connecting grooves, arc-shaped connecting plates, and jacking blocks, allowing for easy engagement and positioning during disassembly and assembly, with adjustable number of detachable feet for varying usage requirements, providing moderate resistance and high support strength.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If the five-star base uses an integral structure, then the structural strength is high, but the space occupation is large and replacement cost is high when damaged

Engineering Contradiction:
Improvestructural strengthVSAvoidspace occupation
Core Design Contradiction:
StrengthVSVolume of moving object

Solution Approach 1:

The five-star base is divided into a center block and multiple detachable feet. The center block remains integral while the feet can be separated for compact storage and selective replacement. Connection structures including clamping plates, arc-shaped groove plates, and positioning pins enable the segmented structure to maintain strength while reducing space occupation when disassembled.

Inventive Principle:
Principle #1Segmentation

2Volume of moving object

If the five-star base uses a detachable structure with easy disassembly, then the space occupation is reduced, but the structural strength becomes insufficient and feet rotate easily

Engineering Contradiction:
Improvespace occupationVSAvoidstructural strength
Core Design Contradiction:
Volume of moving objectVSStrength

Solution Approach 1:

Positioning pins and arc-shaped groove plates are pre-configured in specific positions to guide the feet into correct alignment during assembly. The clamping plates are pre-positioned to engage with the feet, providing immediate structural support upon connection. This preliminary configuration ensures that even with easy disassembly capability, the structure maintains sufficient strength when assembled.

Inventive Principle:
Principle #10Preliminary action

3Ease of operation

If the detachable feet are connected with simple connection structures, then the disassembly and assembly are easy, but the feet are easy to rotate and fall apart

Engineering Contradiction:
Improvedisassembly and assembly easeVSAvoidfoot stability
Core Design Contradiction:
Ease of operationVSStability of the object's composition

Solution Approach 1:

The connection structure employs nested components where positioning pins fit into positioning holes, clamping plates overlay the feet, and arc-shaped groove plates interlock with the center block. This nested arrangement provides multiple levels of constraint that prevent rotation and falling while allowing relatively simple disassembly by reversing the nesting sequence.

Inventive Principle:
Principle #7Nested doll (Nesting)

4Stability of the object's composition

If multiple connection components are used to prevent rotation, then the foot stability is improved, but the disassembly and assembly workload increases

Engineering Contradiction:
Improvefoot stabilityVSAvoidconnection structure complexity
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

Multiple connection functions are merged into integrated components. The clamping plates simultaneously provide clamping force and positioning guidance. The arc-shaped groove plates combine positioning, limiting, and support functions in a single element. This merging reduces the number of separate components while maintaining foot stability, thereby controlling disassembly and assembly workload.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentUS11464334B2Detachable five-star base
Publication Date: 2022.10.11 ANJI JINTAI FASTENER CO LTD
  • US11464334B2 patent drawing
  • US11464334B2 patent drawing
  • US11464334B2 patent drawing

AI summary

The disclosure belongs to the technical field of support structures, and in particular relates to a detachable five-star base. In the disclosure, the clamping plate, the arc-shaped groove plate and the support block are arranged on the center block, and the connecting groove, the arc-shaped connecting plate and the jacking block are arranged on the detachable foot to achieve the effective disassembly and assembly of the five-star foot. The disclosure has a reasonable and effective detachable structure of the five-star foot, the detachable feet are easy to be engaged and positioned before disassembly and assembly, the resistance is moderate, the operation is convenient, the support strength after installation is large. The friction and fixing effect between the detachable feet and the center block is good, the detachable feet are not easy to rotate and fall apart, and the number of detachable feet can be adjustable.