Power Tool Suction Coupling Layout for Secure One-Handed Release
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Solution Overview
Problem
Existing suction devices for hand-held power tools, such as hammer drills, lack a compact and ergonomic design with reliable locking mechanisms that prevent accidental release and ensure easy accessibility for one-handed operation.
Innovation Solution
The suction device features a compact design with locking and actuating elements adjacent to the drive unit, integrated locking levers, and a dual-locked clip mechanism, allowing for ergonomic handling and secure attachment to the power tool, with actuating elements positioned near the center of gravity to prevent accidental detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the actuating element and locking element are arranged away from the drive unit, then there is more space for component arrangement, but the axial design length increases and ergonomics deteriorate
Solution Approach 1:
The patent positions the actuating element and locking element in the radial direction adjacent to the drive unit rather than extending axially. This dimensional shift allows components to be arranged in the available radial space around the drive unit, achieving compact axial length while providing sufficient space for component arrangement through optimized radial layout.
2Volume of moving object
If the locking element is positioned far from the center of gravity, then there is more space for component layout, but the risk of accidental release increases
Solution Approach 1:
The patent positions the actuating element and locking element adjacent to the drive unit, which is located near the center of gravity of the suction device. This positioning creates a counterbalancing effect where the weight distribution and center of gravity provide inherent stability, preventing accidental release while maintaining adequate space for component layout through the compact arrangement.
3Ease of operation
If the actuating element is positioned for easy accessibility, then one-handed operation is enabled, but the locking mechanism complexity increases
Solution Approach 1:
The patent integrates the actuating element and locking element into a unified arrangement adjacent to the drive unit, where both elements work together in a compact configuration. This merging of functions allows the actuating element to be easily accessible for one-handed operation while the locking mechanism maintains simplicity through the direct coupling and integrated design, avoiding the need for complex separate systems.
4Reliability
If multiple locking elements are used to prevent accidental release, then reliability improves, but the device complexity and axial length increase
Solution Approach 1:
The patent designs the actuating element and locking element arrangement adjacent to the drive unit to serve multiple functions simultaneously. The single locking element provides reliable attachment while the integrated actuating mechanism enables easy release, and the positioning near the center of gravity adds inherent stability. This multi-functional design achieves reliable accidental release prevention without requiring multiple separate locking mechanisms, maintaining simplicity.
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 solution provides a compact, ergonomically designed suction device with reliable locking and easy accessibility, ensuring secure attachment and preventing accidental release, while maintaining a low axial length and minimizing components for enhanced usability.
Implementation Method 1
a spring element (26) arranged between an inner wall of the housing (14) and the locking lever (24), which pretensions the locking lever (24)
Implementation Method 2
a drive unit (16) arranged in the housing (14) for generating a suction flow... The drive unit in particular comprises an electric motor and a fan element
Data Source
AI summary
A suction device for a releasable connection to a hand-held power tool, in particular to a hammer drill, includes a housing with a drive unit arranged in the housing for generating a suction flow, and at least one locking unit for a mechanical coupling with the hand-held power tool. The coupling includes at least one locking element for direct locking with the hand-held power tool and at least one actuating element used to release the lock of the at least one locking element. The actuating element and/or the locking element are arranged at least partially adjacent the drive unit.