Rotatable Joint Sanding Device Vacuum Sealing
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Solution Overview
Problem
Conventional sanding devices, especially those not used with vacuum systems, fail to effectively evacuate sanded particles and often have shortcomings in sanding performance, efficiency, and maneuverability, particularly in hard-to-reach places.
Innovation Solution
A sanding device with a base plate, a rotatable joint, and a supporting tube that allows for improved sanding and evacuation of particles, featuring a joint with a recess for the supporting tube and sealing members for enhanced suction and flexibility, enabling effective sanding and particle evacuation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional sanding devices are used without vacuum systems, then the device structure is simple, but the evacuation of sanded particles is ineffective
Solution Approach 1:
The patent combines the sanding device with a vacuum system into an integrated unit. The base plate includes a vacuum chamber that receives and seals with the work surface, creating a closed system that allows the vacuum to effectively capture and evacuate sanded particles during the sanding process.
Solution Approach 2:
The vacuum chamber is nested within the base plate structure, with the sanding mechanism positioned above it. The joint assembly connects the supporting tube to the base plate, creating a nested configuration where the vacuum system is integrated within the overall sanding device structure.
2Ease of operation
If conventional sanding devices are used, then the device is easy to operate, but the sanding performance and efficiency are insufficient
Solution Approach 1:
The joint assembly provides rotational movement between the base plate and supporting tube, allowing the sanding device to adapt to different angles and positions. This dynamic capability enables the operator to reach various surfaces while maintaining effective vacuum sealing and sanding contact.
Solution Approach 2:
The joint acts as an intermediary component that connects the base plate to the supporting tube, providing both mechanical connection and rotational flexibility. This intermediary structure enables the transmission of sanding force while allowing angular adjustment for improved accessibility.
3Device complexity
If conventional sanding devices are used, then the device structure is simple, but the maneuverability in hard-to-reach places is limited
Solution Approach 1:
The rotatable joint assembly enables the supporting tube to rotate relative to the base plate, providing the maneuverability needed to access hard-to-reach areas. This dynamic rotational capability allows the sanding surface to be positioned at various angles while maintaining the vacuum seal.
Solution Approach 2:
The device is segmented into distinct components: the base plate with vacuum chamber, the joint assembly, and the supporting tube. This segmentation allows the joint to rotate independently, providing flexibility for reaching difficult areas while keeping the vacuum sealing surface fixed relative to the sanding mechanism.
4Productivity
If conventional sanding devices are used with vacuum systems, then the evacuation of particles is improved, but significant shortcomings remain in suction efficiency and maneuverability
Solution Approach 1:
The rotatable joint assembly allows the supporting tube to be positioned at various angles while maintaining the vacuum seal between the base plate and work surface. This dynamic positioning capability improves both maneuverability and suction efficiency by allowing the vacuum inlet to remain optimally positioned regardless of the sanding angle.
Solution Approach 2:
The joint assembly serves as an intermediary that decouples the orientation of the supporting tube from the orientation of the base plate. This allows the vacuum system to maintain its sealing relationship with the work surface while the supporting tube can be angled for improved access to difficult areas.
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 design enhances sanding performance, efficiency, and surface quality by creating a vacuum chamber when used with a vacuum system, improving suction and evacuation of particles regardless of the tool's positioning, resulting in better sanding results and increased maneuverability.
Implementation Method 1
creating a vacuum chamber when used with a vacuum system, improving suction and evacuation of particles
Data Source
AI summary
A sanding device (1) includes a base plate (3) with opposite sanding and supporting surfaces (5,7); as well as a joint (29) operatively mounted onto the supporting surface (7) of the base plate (3) and rotatable about a first axis of rotation (93). A supporting tube is (69) operatively mounted onto the joint (29) and rotatable with respect to the joint (29) about a second axis of rotation (95).