Spring-Loaded Squirrel Baffle for Passive Climb Prevention
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Solution Overview
Problem
Existing squirrel-proof devices for bird nests require power supply and control circuits, which increase complexity and cost, and may harm birds or fail due to motor faults.
Innovation Solution
A squirrel-proof device comprising a housing with inverted or arc-shaped structures and connecting parts that move up and down or rotate, using a spring mechanism to apply downward and outward forces on squirrels, eliminating the need for power and control circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an electric motor and power supply system are used to drive the housing to rotate, then the squirrel repelling effect is improved, but the device complexity and cost increase
Solution Approach 1:
The patent removes the electric motor, power supply, and control circuit components from the device, retaining only the housing structure and spring mechanism. This extraction of complex components directly reduces device complexity while maintaining the squirrel repelling function through passive mechanical design.
Solution Approach 2:
The device uses the squirrel's own weight and the spring mechanism to automatically generate the repelling force. When a squirrel approaches, the spring compresses and releases, creating an upward and outward force that pushes the squirrel away, eliminating the need for external power sources or control systems.
2Ease of operation
If an electric motor and control circuit are installed, then the housing can be driven to rotate, but the cost and device complexity increase
Solution Approach 1:
The patent replaces the electric motor and control circuit system with a purely mechanical spring-based mechanism. The spring provides the necessary force to drive the housing rotation and movement through mechanical interaction alone, eliminating electrical components and their associated complexity.
3Reliability
If a motor-driven housing rotation mechanism is used, then squirrel encroachment is prevented, but the device may harm birds or fail due to mechanical issues
Solution Approach 1:
Instead of using a motor to actively attack or scare squirrels, the device uses a passive spring mechanism that gently pushes or redirects squirrels away from the nest. This inverted approach—using gentle mechanical guidance rather than aggressive active defense—reduces the risk of harming birds while maintaining protection effectiveness.
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 device effectively repels squirrels without power or control circuits, simplifying structure, reducing costs, and ensuring safety for birds by maintaining balance and throwing squirrels off.
Implementation Method 1
the connecting parts include a fixed base, a spring and a connecting base, wherein the fixed base is set on the supporting rod, the spring is nested on the supporting rod, the bottom of the spring is connected to the fixed base, the top of the spring is connected to the connecting base
Data Source
AI summary
The present utility model relates to a squirrel-proof device set on a supporting rod, comprising housing and connecting parts set between the housing and the supporting rod; wherein the connecting parts enable the housing to move upward along the supporting rod when the housing is exerted a downward force; the first housing is arranged above the second housing, the first and/or the second housing is connected to the supporting rod through the connecting parts; the second housing comprises an inverted circular table bottom housing or an arc bottom housing with diameter decreased from up to down, and the top of the second housing is connected to the bottom of the first housing. The utility model forms a squirrel-proof device that can move vertically and/or rotate, and when squirrels climb over the housing, they are affected by the downward and outward centripetal force, and cannot maintain balance and grip.