Angle Grinder Dust Shroud Slideable Hatch
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Solution Overview
Problem
Existing dust shrouds for angle grinders often have removable hatches that are easily lost or not replaced, leading to incomplete dust collection and safety hazards when grinding into corners, as they do not securely attach to the shroud and can interfere with operation.
Innovation Solution
A dust shroud with a slideable access hatch that is integrally connected to the shroud, allowing easy opening and closing without the need for manual handling, featuring a finger tab for safe operation and guide channels to maintain the hatch's position, ensuring it remains attached and functional.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a removable hatch is used to allow corner grinding, then accessibility to the grinding disc is improved, but the hatch is easily lost or not replaced leading to incomplete dust collection
Solution Approach 1:
The patent applies the dynamics principle by making the hatch removable and reattachable rather than fixed. The hatch can be dynamically removed when corner grinding is needed and securely reattached when normal dust collection is required. This dynamic design allows the system to adapt between two operational states: enclosed mode for dust collection and open mode for corner grinding access.
Solution Approach 2:
The patent applies segmentation by dividing the shroud into separate components: the main shroud body and the detachable hatch portion. This segmentation allows the hatch to be independently removed and reattached, providing flexible access to the grinding disc while maintaining the integrity of the main dust collection structure when the hatch is secured.
2Adaptability or versatility
If the hatch is made removable for corner grinding access, then versatility is improved, but the hatch interferes with operation when not properly secured
Solution Approach 1:
The dynamic removability of the hatch enables the system to switch between operational modes. When secured, the hatch provides a safe enclosed structure for normal operation. When removed, it enables corner grinding versatility. The operator can dynamically adjust the configuration based on the specific grinding task at hand.
Solution Approach 2:
The hatch is extracted as a separate detachable component from the main shroud body. This extraction allows the hatch to be completely removed when corner grinding is needed, eliminating any interference with the grinding operation while still providing the option to reattach for dust collection when working in open areas.
3Ease of operation
If a hinge-attached hatch is used, then ease of opening is improved, but the hatch does not stay open and may close during use
Solution Approach 1:
Rather than using a hinge that allows partial movement, the patent employs complete removability. The hatch can be fully detached and reattached, providing a stable secured position when attached and complete openness when removed. This eliminates the instability problem of hinged designs where the hatch might partially close during operation.
Solution Approach 2:
The hatch is completely extracted from the shroud structure through a removable connection rather than a hinged connection. This complete separation eliminates any risk of the hatch inadvertently closing or shifting position during operation, as it can be fully removed when needed and securely reattached when dust collection is required.
Data Source
AI summary
A dust shroud for an angle grinder includes an access hatch which slides along the shroud body to selectively expose an edge of a grinding disc to allow grinding into a corner. The hatch remains attached to the shroud body in both the open and closed position, making the hatch easier to use and less likely to become lost, resulting in increased worker compliance in properly using the hatch.