Bow Handle Housing Layout for Safer Angle Grinder Grip
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Solution Overview
Problem
Existing hand-held power tool housings lack ergonomic design, leading to uncomfortable grip and inadequate protection for users during machining operations, as the bow handle's orientation and spacing relative to the axis of rotation do not provide sufficient leverage and safety distance from the tool spindle.
Innovation Solution
The housing apparatus features a bow handle that projects significantly beyond the motor housing, with a gripping surface spaced far enough to offer enhanced ergonomics and safety, and includes a battery pack interface positioned on the handle housing away from the bow handle, allowing for comfortable grip and reduced exposure to removed material during machining.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the bow handle is positioned closer to the motor housing, then the device complexity is reduced, but the grip ergonomics and safety distance from the tool spindle deteriorate
Solution Approach 1:
The bow handle is positioned to extend beyond the motor housing in a direction perpendicular to the axis of rotation, utilizing spatial dimensionality to achieve both ergonomic grip distance and acceptable structural complexity. This dimensional arrangement allows the handle to project laterally rather than extending axially, resolving the contradiction between compact structure and ergonomic spacing.
2Device complexity
If the bow handle is positioned closer to the tool spindle, then the housing structure is simplified, but the safety distance from the tool spindle is reduced
Solution Approach 1:
The handle is oriented perpendicular to the axis of rotation and positioned to extend beyond the motor housing, creating lateral separation from the tool spindle. This dimensional positioning increases the safety distance and reduces exposure to flying debris while maintaining a relatively simple housing structure without requiring complex offset mechanisms.
3Ease of operation
If the bow handle projects significantly beyond the motor housing, then the grip ergonomics are improved, but the device dimensions increase
Solution Approach 1:
The bow handle is positioned asymmetrically, extending beyond the motor housing on one side rather than being centrally aligned or symmetrically distributed. This asymmetric positioning optimizes the grip ergonomics by placing the handle at the most effective distance from the user's hand, while the overall device length is managed by the asymmetric configuration rather than uniform extension in all directions.
Data Source
AI summary
The disclosure relates to a housing apparatus, in particular a hand-held power tool housing, for a hand-held power tool, in particular an angle grinder, with at least one handle housing which comprises at least one bow handle, with at least one motor housing which comprises a storage area in which a drive unit of the hand-held power tool can be disposed and which specifies an orientation of an axis of rotation of the drive unit, wherein, viewed in a direction parallel to the axis of rotation, the handle housing, in particular the bow handle, is disposed on the motor housing at least substantially entirely on a side of the motor housing facing away from a gearbox housing connection region of the motor housing, and with at least one battery pack interface for placement of at least one battery pack which is disposed on the handle housing on a side of the handle housing facing away from the bow handle.It is proposed that, viewed along a direction perpendicular to the axis of rotation, the bow handle projects largely beyond the motor housing.