Umbrella Rotation Base Foot Pedal Control Mechanism
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Solution Overview
Problem
There is a need for more compact and simpler rotation base designs for cantilever umbrellas to enhance flexibility and usability in outdoor settings.
Innovation Solution
The design incorporates a first and second support with a sprocket and control device, where the control device can be positioned to either prevent or allow rotation of the second support relative to the first support, utilizing a U-shaped member and foot pedal for engagement and disengagement, ensuring compactness and increased ground clearance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a rotation base design is made more compact, then device complexity is reduced and ground clearance is improved, but the ability to prevent rotation when needed becomes compromised
Solution Approach 1:
The control device is designed to be movable between two positions: a first position where it prevents rotation by engaging the radial projection, and a second position where it allows rotation by disengaging from the radial projection. This dynamic positioning mechanism enables the base to switch between locked and unlocked states, resolving the contradiction between compactness and rotation control reliability.
Solution Approach 2:
The control device acts as an intermediary mechanism between the user's input and the rotation control function. By positioning the control device to engage or disengage from the radial projection on the second support, it mediates the rotation state without requiring complex structural changes, thus maintaining compactness while ensuring reliable rotation control.
2Stability of the object's composition
If the control device is positioned to prevent rotation, then stability is improved, but flexibility and usability are reduced
Solution Approach 1:
The control device's ability to move between engaged and disengaged positions provides dynamic control over the base's stability and flexibility. When engaged, the base is stable and fixed; when disengaged, the base becomes flexible and rotatable. This dynamic switching resolves the contradiction between stability and positioning flexibility.
Solution Approach 2:
The system changes the rotational parameter of the base by moving the control device between positions. In the engaged state, rotation is prevented (fixed parameter); in the disengaged state, rotation is allowed (variable parameter). This parameter change enables the base to adapt between stability and flexibility as needed.
3Ease of manufacture
If the control device is made simpler to construct, then ease of manufacture is improved, but the ability to provide ground clearance and compactness is reduced
Solution Approach 1:
The control device is segmented into distinct components: a control device portion and a U-shaped member portion. This segmentation allows each part to be manufactured separately using simple processes, improving ease of manufacture, while the coordinated arrangement of these segments achieves the desired ground clearance and compactness when assembled.
Solution Approach 2:
The U-shaped member acts as an intermediary component that connects the control device to the radial projection engagement mechanism. This intermediary structure enables ground clearance and compactness without requiring complex integrated designs, thus improving ease of manufacture while maintaining the required geometric properties.
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 allows for flexible positioning of cantilever umbrellas while maintaining compactness and stability, providing improved usability and ground clearance, enabling the umbrella to rotate smoothly and withstand minor loads such as wind.
Implementation Method 1
The foot pedal is coupled with the first support at a pivot. The foot pedal has a first engagement member and a second engagement member. Movement of the foot pedal downward causes engagement members to disengage from the second support permitting the second support to rotate.
Data Source
AI summary
An umbrella base is provided that includes a first support, a second support and a control device, which can include a foot pedal. The second support is rotatably coupled with the first support. The foot pedal is coupled with the first support, e.g., at a pivot. The foot pedal has at least one lateral member. The lateral member projects downward from an arm. The lateral member is located on the same side of the second support as the foot pedal. Movement of the foot pedal downward causes lateral members to disengage from the second support permitting the second support to rotate.