Adjustable Hoop Clamp for Variable Rod Diameter Fastening

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Solution Overview

Problem

Existing hoops for fastening electronic devices on rod bodies are limited in their applicability due to the fixed spacing of fastening holes, leading to poor fastening effects on rod bodies with varying diameters.

Innovation Solution

A hoop design featuring a strap with multiple fastening holes, a strap buckle, a support member, and a driving member, allowing the hoop to be tightly secured onto rod bodies of varying sizes by adjusting the position of the support member using a hand torsion bar or similar driving mechanism.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the hoop uses fixed spacing fastening holes on the strap, then the structure is simple and easy to manufacture, but the scope of applicable rod bodies is limited and fastening effect is poor for varying diameters

Engineering Contradiction:
Improvescope of applicable rod bodiesVSAvoidhoop structure complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The support member is made movable relative to the buckle body through a driving member (such as a hand torsion bar or screw mechanism), allowing the distance between the support member and rod body to be dynamically adjusted. This enables the hoop to adapt to rod bodies of different diameters by moving the support member closer to or farther from the rod body, thereby resolving the contradiction between fixed fastening holes and variable rod body sizes.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The driving member changes the geometric parameter (distance) between the support member and the rod body. By adjusting this parameter, the hoop can accommodate rod bodies with different cross-sectional sizes even when using fixed-spacing fastening holes, thus improving adaptability without requiring complex adjustable fastening hole positions.

Inventive Principle:
Principle #35Parameter changes

2Reliability

If the support member is positioned close to the rod body, then the fastening effect is strong and sliding is prevented, but friction and wear increase

Engineering Contradiction:
Improvefastening stabilityVSAvoidfriction and wear
Core Design Contradiction:
ReliabilityVSObject-generated harmful factors

Solution Approach 1:

A cushioning member (such as an elastic pad or rubber layer) is introduced as an intermediary between the support member and the rod body. This cushioning member reduces direct contact and friction between the metal support member and the rod body surface, thereby decreasing wear while maintaining the compressive force needed to prevent sliding and ensure reliable fastening.

Inventive Principle:
Principle #24Intermediary (Mediator)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The hoop can be securely fastened to a wide range of rod body sizes, preventing sliding and compressive deformation, while minimizing friction and wear, and ensuring a stable connection.

Implementation Method 1

the driving member is configured to drive the support member to move in a direction close to or away from the buckle body

Methodology Applied
Scientific EffectMechanical Force: Mechanical Force

Implementation Method 2

the driving member drives the support member to move in the direction away from the buckle body to press the rod body, so that the strap is tightly held onto the rod body

Methodology Applied
Scientific EffectCompression: Compression

Implementation Method 3

the elastic pad is configured to reduce friction and wear between the support member and the rod body

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentEP4040033B1Hoop and electronic device
Publication Date: 2025.06.25 HUAWEI TECH CO LTD
  • EP4040033B1 patent drawingFigure 1~2
  • EP4040033B1 patent drawingFigure 3
  • EP4040033B1 patent drawingFigure 4

AI summary

A hoop and an electronic device are provided, and relate to the field of electronic device technologies, to increase a scope of rod bodies to which the hoop is applicable. A hoop (1) includes a strap (11), a strap buckle (12), a support member (13), and a driving member (14). The strap (11) is provided with a plurality of fastening holes (111) in a length direction. The strap buckle (12) includes a buckle head (121), a buckle body (122), and a buckle tail (123). The buckle head (121) and the buckle tail (123) are respectively located on two sides of the buckle body (122) and are connected to the buckle body (122), the buckle tail (123) is connected to one end of the strap (11), and the buckle head (121) is capable of being fastened to any one of the fastening holes (111), so that the strap (11) is held onto an existing rod body. The support member (13) is located on a side that is of the buckle body (122) and that is configured to face the existing rod body, the driving member (14) is connected between the support member (13) and the buckle body (122), and the driving member (14) is configured to drive the support member (13) to move in a direction close to or away from the buckle body (122). The hoop (1) is configured to fasten an electronic device such as a router, a camera, and an antenna to the existing rod body.