Angle Grinder Dust Hood Single-Arm Depth Stop
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Solution Overview
Problem
Existing dust hoods for cut-off grinders are complex to handle due to depth stops mounted on both sides, increasing installation space requirements and frictional forces, making them difficult to adjust and install.
Innovation Solution
A dust hood design where the depth stop is mounted on the flange side via a single-arm bearing, eliminating the need for a bearing ring on the clamping nut side, allowing for a smaller installation space and simpler design, with a depth stop that can be adjusted by rotating about the axis of the cutting disk and featuring a position lock with a spring element for stepless adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If depth stops are mounted on both sides of the hood body, then the depth stop provides stable depth limitation, but the installation space requirement increases and frictional forces increase making adjustment difficult
Solution Approach 1:
The patent extracts the depth stop mounting from one side of the hood body, leaving only a single-arm bearing on the flange side. This removes the redundant bearing structure that caused increased friction and installation space requirements, while maintaining the depth limitation function through the single remaining bearing point.
Solution Approach 2:
The patent creates an asymmetric mounting configuration where the depth stop is mounted exclusively on the flange side via a single-arm bearing, rather than symmetrically on both sides. This asymmetric arrangement reduces the number of bearing surfaces from two to one, thereby reducing frictional forces and simplifying adjustment operations.
2Reliability
If depth stops are mounted on both sides of the hood body, then the depth stop provides stable depth limitation, but the installation space requirement increases
Solution Approach 1:
The patent removes the depth stop mounting structure from one side of the hood body, extracting only the essential single-arm bearing mounting on the flange side. This reduction in mounting locations directly decreases the installation space required while preserving the depth limitation function.
3Reliability
If a bearing ring is present on the clamping nut side, then the depth stop is supported on both sides, but the overall height of the dust hood increases
Solution Approach 1:
The patent extracts the bearing ring structure from the clamping nut side of the hood body, eliminating this redundant support element. The depth stop function is maintained through the single-arm bearing on the flange side alone, and removing the opposite-side bearing ring reduces the overall height of the dust hood.
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 results in a dust hood that is easier to handle, reduces frictional forces, and allows for a lower overall height, while maintaining effective dust containment and adjustable cutting depth, enhancing user convenience and reducing costs.
Implementation Method 1
increases both the complexity and the force required for depth adjustment (caused by friction)
Implementation Method 2
The position lock can incorporate a spring element integrated into the depth stop. This spring element can be used to implement a snap and/or detent mechanism, enabling step adjustment of the cutting disc
Data Source
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AI summary
A dust cover (100) having: a flange (90) for attaching the dust cover (100) to a transmission extension housing (210) of a cutting grinder (200); a cover body (10) for at least partially covering a circular cutting disc (220) on both sides; and a suction connection (40) by means of which removed surface material (S) can be suctioned from the cover body (10), wherein the dust cover (100) has a depth stop (80) by means of which a cutting depth of the cutting disc (220) can be limited, wherein the depth stop (80) is mounted on the cover body (10) by means of a single arm bearing (81) on the flange side.