Angle Grinder Protective Hood Radial Groove Mounting
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Solution Overview
Problem
Existing angle grinder designs require axial space for protective hoods with clamping collars, making it difficult to achieve a compact and flat design, especially in the gear head area.
Innovation Solution
The protective hood features an open-edged recess that can be pushed and rotated onto a neck section with a groove-shaped receiving means, eliminating the need for an axial clamping collar, and is secured by a spring-loaded loading or blocking means to prevent loosening or twisting, allowing for a more space-saving attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a protective hood with an axial clamping collar is used, then the protective hood can be securely attached to the power tool, but the axial space requirement increases, making it difficult to achieve a compact and flat design
Solution Approach 1:
The protective hood is attached by pushing it radially onto the neck section in the plane of the disc-shaped part, rather than axially. The receiving means is formed as a circumferential groove on the neck section that engages with the edge section of the protective hood. This radial/dimensional attachment approach eliminates the need for axial clamping collars and reduces axial space requirements while maintaining secure attachment.
2Length of moving object
If the protective hood is pushed onto the neck section in the plane of the disc-shaped part, then axial space is saved and compact design is achieved, but the attachment mechanism becomes more complex
Solution Approach 1:
The receiving means is integrated directly into the neck section of the power tool as a circumferential groove, combining the attachment feature with the existing structural element. The edge section of the protective hood engages with this groove, and a loading or blocking means acts on the edge portion to prevent detachment. This merging approach avoids adding separate complex attachment mechanisms while achieving secure radial attachment.
3Ease of operation
If the protective hood can be easily attached and removed without tools, then ease of operation is improved, but the attachment security may be compromised
Solution Approach 1:
The protective hood is designed to be attached and detached by the user without requiring tools. The disc-shaped part with open-edged recess is pushed radially onto the neck section and engages with the circumferential groove through its edge section. The loading or blocking means provides automatic retention, allowing easy tool-free attachment and detachment while maintaining secure attachment during operation.
Data Source
Figure 1~2
Figure 3
AI summary
The tool has a neck section (24) comprising a screw-shaped receiving unit for an edge section (42) of a disk-shaped part (28) of a protection cover (22). The screw-shaped receiving unit is extended in a circumferential direction of the neck section. The edge section is engaged in the receiving unit during sliding of the neck section. The cover is held at the neck section in an axial direction in a form-fit manner. The cover supported in a mounting position by a loading and/or locking unit against detachment or rotation in the circumferential direction or radial direction.