Rotational Antenna With Hidden Pivot

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Solution Overview

Problem

Conventional rotational antennas with protruding pivots interfere with surrounding objects and are prone to damage, especially in limited spaces, due to their external design.

Innovation Solution

A rotational antenna design featuring a curved radiating member with a hidden pivot, where the pivot is housed inside the device and includes an axle and pivot holder, allowing for rotation and signal transmission without external protrusion, maintaining wireless communication efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the pivot is designed to protrude from the device body for rotation, then the rotational antenna can be easily operated, but the pivot interferes with surrounding objects and is prone to damage

Engineering Contradiction:

Improveease of operationVSAvoidreliability

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The pivot is nested inside the device body rather than protruding outward. The rotating member rotates within the housing, with the pivot concealed inside, eliminating the interference and damage risk while maintaining rotational functionality

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The rotation mechanism transitions from an external protruding pivot to an internal concealed pivot. The rotating member extends from the device body but rotates about a hidden axis inside, changing the spatial dimension of the rotation center from external to internal

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Device complexity

If the pivot protrudes from the device body, then the rotational antenna structure is simple, but the pivot easily touches and damages surrounding objects

Engineering Contradiction:

Improvedevice complexityVSAvoidharmful factors

Core Design Contradiction:

Device complexityVSObject-affected harmful factors

Solution Approach 1:

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The harmful protruding pivot is extracted and replaced with an internal rotation mechanism. The rotating member can still extend outward for operation, but the dangerous protruding pivot is removed and the rotation is achieved through internal mechanical means

Inventive Principle:

Principle #2Taking out (Extraction)

3Reliability

If the pivot is concealed inside the device body, then the antenna is protected from damage, but the wireless communication efficiency may be reduced

Engineering Contradiction:

ImprovereliabilityVSAvoidwireless communication efficiency

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The antenna employs a curved radiating member that can dynamically change its configuration. The curved portion can extend outward when needed for optimal signal reception while the pivot remains concealed inside, balancing protection with communication efficiency

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The radiating member features a curved portion instead of a straight design. This curved configuration allows the antenna to maintain effective radiating length for wireless communication while the pivot remains concealed inside the device body

Inventive Principle:

Principle #14Spheroidality (Curvature)

Data Source

PatentUS7541990B2Rotational antenna

Publication Date: 2009.06.02 WISTRON CORP

AI summary

A rotational antenna is disclosed. The rotational antenna includes a radiating member and a pivot. The radiating member preferably comprises a curved portion. The pivot further includes an axle and a body. The axle is coupled to the curved portion, and the body is electrically connected to a wireless communication device. Accordingly, the pivot is disposed within the wireless communication device and hidden inside the wireless communication device. The damage of the pivot can be avoided when moving the wireless communication device.