Oscillating Tool Suction Mount With Bayonet Locking
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Solution Overview
Problem
Existing suction devices for oscillating handheld power tools are cumbersome to mount and lack versatility, particularly when used with saw blades, as they require screwing and are not easily adjustable for different angular positions, leading to potential detachment and reduced effectiveness in dust and chip extraction.
Innovation Solution
A suction device with a hollow cylindrical mounting section that allows for easy attachment to the gearbox extension housing without screws, featuring an encoding region for precise alignment, a swivelable locking mechanism, and an adjustable air outlet with limited rotation to ensure effective dust and chip extraction, along with a grille insert to prevent large particles from entering the air duct.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the suction device is secured with screws to the handheld power tool, then the attachment is secure and reliable, but the mounting process becomes cumbersome and time-consuming
Solution Approach 1:
The patent replaces the screw-based mechanical fastening system with a bayonet-style coupling mechanism. The mounting section features a coupling element that engages with a corresponding receptacle on the gearbox extension housing, allowing secure attachment through simple insertion and rotation motions rather than requiring multiple screws and tools.
Solution Approach 2:
The mounting mechanism incorporates rotational degrees of freedom, allowing the suction device to be easily attached and detached through dynamic insertion and withdrawal motions. The coupling element can be inserted at various angles and then rotated into the locked position, providing both ease of operation and secure attachment.
2Stability of the object's composition
If the suction device is made fixed in position, then the attachment is stable, but the adaptability to different angular positions and applications is reduced
Solution Approach 1:
The mounting section incorporates rotational freedom within the bayonet coupling mechanism, allowing the suction device to be positioned at different angular orientations while maintaining secure attachment. The coupling element can be rotated to different positions before locking, enabling adaptation to various application requirements while preserving attachment stability through the locked coupling mechanism.
3Adaptability or versatility
If the suction device allows free rotation on the gearbox extension housing, then the adaptability to different positions is improved, but the risk of unintentional detachment increases
Solution Approach 1:
The bayonet coupling mechanism provides controlled rotational movement during the mounting process, allowing the user to insert and rotate the suction device into the desired position. Once positioned, the coupling element locks into place, preventing further rotation and unintentional detachment, thus balancing adaptability with retention reliability.
Solution Approach 2:
The coupling mechanism is designed to engage in a preliminary insertion phase followed by a locking phase. During insertion, the coupling element can rotate freely to accommodate different positions. Once the desired position is reached, the coupling automatically locks, preventing further rotation and securing the attachment before any operational forces are applied.
Data Source
AI summary
A suction device for a handheld power tool that is adapted to be driven in oscillation and that is equipped with a gearbox extension housing for mounting of the suction device. The suction device having a body mounted on the gearbox extension housing of the handheld power tool via a mounting section and an air duct formed in the body, the air duct being delimited at one end by an air inlet and at an other end by an air outlet on which a suction apparatus or a dust exhauster is adapted to be detachably mounted. The mounting section of the body is formed essentially as a hollow cylinder and extends between a first plane and a second plane, which are substantially parallel.