Power Tool Dust Container Attachment Stability
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Solution Overview
Problem
Existing dust collection containers for power tools tend to detach due to excessive dust weight, leading to instability when used in orientations where the dust bag is directed vertically downward.
Innovation Solution
A dust collection container with a tubular member and biasing member, where the tubular member is attached to the power tool via a protrusion and wall part, and the biasing member stabilizes the engagement state by applying a biasing force, preventing detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the dust bag assembly is made simple and easily attachable, then ease of operation is improved, but stability of attachment deteriorates when directed vertically downward with excessive dust weight
Solution Approach 1:
The attachment mechanism is segmented into distinct functional elements: a protrusion on the tubular member and a corresponding groove on the discharge spout. This segmentation allows for simple attachment while maintaining stability through the engagement of these separate components.
Solution Approach 2:
The biasing member (spring) applies an upward biasing force that counteracts the downward force of gravity acting on the dust bag assembly when directed vertically downward. This counterweight mechanism prevents detachment due to excessive dust weight while maintaining ease of attachment.
2Device complexity
If a simple fitting arrangement is used, then device complexity is reduced, but the attachment state becomes unstable under external forces
Solution Approach 1:
The biasing member is pre-loaded to provide continuous biasing force that maintains the engagement between the protrusion and groove. This preliminary action ensures the attachment state remains stable under external forces without requiring complex active control mechanisms.
Solution Approach 2:
The biasing member acts as an intermediary element between the protrusion and the discharge spout, mediating the attachment force. This intermediary component simplifies the overall structure while ensuring stable attachment by continuously applying force to maintain engagement.
3Reliability
If the tubular member is fitted tightly around the discharge spout, then attachment stability is improved, but ease of attachment and removal deteriorates
Solution Approach 1:
The attachment interface uses asymmetric features: a protrusion on the tubular member that fits into a groove on the discharge spout. This asymmetric design provides stable attachment when engaged while allowing easy attachment and removal through simple insertion and withdrawal motions.
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 ensures a stable attachment of the dust collection container to the power tool, preventing accidental detachment and enhancing usability by maintaining engagement even under external forces.
Implementation Method 1
The biasing member is disposed adjacent to the wall part of the tubular member, and between the protrusion and the wall part in the first direction
Data Source
AI summary
A dust collection container includes a hollow member having a storage space, a tubular member fixed to the hollow member and defining a passage communicating with the storage space of the hollow member, and a biasing member. The tubular member includes at least one tubular wall, a protrusion, and a wall part. The at least one tubular wall extends along a first axis extending in a first direction. The protrusion protrudes from a first one of an inner peripheral surface and an outer peripheral surface of the at least one tubular wall in a direction orthogonal to the first axis. The wall part protrudes from the first one of the inner peripheral surface and the outer peripheral surface on which the protrusion is disposed. The biasing member is adjacent to the wall part of the tubular member, and between the protrusion and the wall part in the first direction.