Flasher Fish Finder Axial Vibration Suppression
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Flasher type fish finders experience noise due to vibration caused by changes in the balance of the display rotating disk and motor when the device is inclined, resulting from movable play in the rotary shaft.
Innovation Solution
A configuration using magnets or ferromagnetic materials in the first and second installation parts to create an attraction or repulsive force along the axial direction of the rotary shaft, maintaining a constant balance between the display rotating disk and motor, thereby limiting movement and reducing vibration and noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the rotary shaft has movable play in the axial direction to accommodate inclination, then the device can adapt to inclined installation sites, but the balance of relative positional relationship between the display rotating disk and motor changes, causing vibration and noise
Solution Approach 1:
The patent introduces a counterweight member that rotates together with the display rotating disk, positioned opposite to the display rotating disk relative to the rotary shaft. This counterweight member has a weight that balances the weight of the display rotating disk, creating a balanced rotating assembly that eliminates vibration and noise caused by the movable play in the rotary shaft during inclined operation.
2Adaptability or versatility
If the display rotating disk is fixed to the rotary shaft with movable play, then the device allows for installation inclination adjustment, but the constant relative positional relationship between the display rotating disk and motor cannot be maintained
Solution Approach 1:
The counterweight member is configured to rotate together with the display rotating disk while maintaining a constant relative positional relationship with the motor. The counterweight member's positioning and balancing function ensure that even when the rotary shaft moves due to inclination changes, the overall rotating assembly remains balanced and the relative positions remain stable.
3Object-generated harmful factors
If magnets or ferromagnetic materials are used to create attraction or repulsive force in the axial direction, then the balance is maintained and vibration is suppressed, but the device complexity increases
Solution Approach 1:
The patent employs a counterweight member that is rotationally symmetric with respect to the rotary shaft, designed to balance the display rotating disk. This mechanical balancing approach uses the principle of counterweights to offset the effects of gravity and maintain stable operation during inclined installation, providing a simple and effective solution without requiring complex control systems or additional active components.
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
This solution effectively suppresses noise and maintains a constant balance between the display rotating disk and motor, regardless of the device's inclination, enhancing the operational stability of the flasher type fish finder.
Implementation Method 1
In the second installation part, fixed to a member not influenced by the play of the rotary shaft, a magnet or a ferromagnetic material is provided such that an attraction force or a repulsive force occurs in the axial direction of the rotary shaft with respect to the magnet or the ferromagnetic material provided in the first installation part
Implementation Method 2
The magnet is provided in at least one of the first installation part and the second installation part such that a surface of a first magnetic pole and a surface of a second magnetic pole are orthogonal to the rotary shaft
Data Source
AI summary
A flasher type fish finder has: a motor with a rotary shaft having play in an axial direction; a display rotating disk fixed to the rotary shaft; a first installation part; and a second installation part fixed to a member not influenced by the play. In the first installation part, a magnet or a ferromagnetic material is on the rotary shaft or the display rotating disk such that the center of gravity is at the rotary shaft center. In the second installation part, a magnet or a ferromagnetic material is provided occurring an attraction force or a repulsive force in the axial direction, for the magnet or the ferromagnetic material of the first installation part. The magnet is in at least one of the first installation part and the second installation part. The surfaces of a first magnetic pole and a second magnetic pole are orthogonal to the rotary shaft.