Threaded Stopper Assembly for Precise Antenna Phase Adjustment
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Solution Overview
Problem
Existing electrically adjustable antennas face inaccuracies in phase adjustment due to large structural fit gaps caused by the use of multiple parts in existing transmission devices, leading to errors in phase shift calibration and adjustment.
Innovation Solution
A transmission mechanism with a stopper assembly and direction-changing assembly, utilizing a drive shaft, a base with a thread, and a rotating component, reduces the number of parts, minimizing structural fit gaps and improving phase shift calibration accuracy, while also allowing for efficient assembly and cost-effectiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a combination of screw, machine base and nut is used to provide starting position for motor, then the transmission device can provide initial phase shift position calibration, but large structural fit gap results in inaccurate phase shift position calibration
Solution Approach 1:
The patent combines the screw, machine base, and nut into an integrated transmission mechanism where the drive shaft integrates the functions of all three components. This merging eliminates the large structural fit gaps between separate parts while maintaining the calibration function, directly resolving the contradiction between measurement precision and device complexity.
Solution Approach 2:
The transmission mechanism is segmented into functional modules: the drive shaft with integrated threads, the rotating component with stopper, and the base with positioning features. This segmentation allows precise positioning through the engagement of threaded portions while reducing overall structural complexity compared to traditional multi-part assemblies.
2Ease of manufacture
If three or more individual parts are used in transmission device, then the device can provide starting position for motor, but assembly difficulty increases and manufacturing cost increases
Solution Approach 1:
The drive shaft is designed as an integrated component that combines the functions of screw, base, and nut into a single manufactured part. This merging eliminates fit gaps between parts while simplifying assembly operations and reducing manufacturing complexity, directly addressing the contradiction between manufacturing precision and ease of manufacture.
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 transmission mechanism enhances the accuracy of phase adjustment, reduces assembly complexity, and lowers manufacturing costs by using fewer parts, enabling more precise calibration of the initial phase shift position and improving the overall efficiency of phase shifting in electrically adjustable antennas.
Implementation Method 1
a base, including a first thread; and a rotating component, positioned on the driving shaft, rotatable with the driving shaft, and including a second thread to engage the first thread; when the drive shaft rotates, the rotating component rotates with the drive shaft and slides relative to the base through an engagement of the first thread and the second thread
Data Source
AI summary
A transmission mechanism includes: a drive shaft; and a stopper assembly, the stopper assembly including: a base, including a first thread; and a rotating component, positioned on the driving shaft, rotatable with the driving shaft, and including a second thread to engage the first thread, wherein at least one of the base and the rotating component is configured with a stopper; when the drive shaft rotates, the rotating component rotates with the drive shaft and slides relative to the base through an engagement of the first thread and the second thread; and when the stopper resists the base or the rotating component, a relative sliding between the base and the rotating component stops.