Dust bag for power tool and power tool
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Solution Overview
Problem
Conventional dust bags for power tools lack efficient mechanisms for dust discharge and shape maintenance, leading to user inconvenience and potential interference during operation.
Innovation Solution
A dust bag design featuring a frame with non-flexible and flexible portions that allows for extensibility and compressibility, maintaining a cuboidal shape and facilitating dust discharge by enabling users to easily extend and compress the bag with external force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a rigid frame is used to maintain the bag shape, then the bag maintains its outer shape, but the bag cannot be easily compressed for dust discharge
Solution Approach 1:
The frame is divided into multiple rod-like members connected by flexible portions, creating a segmented structure that can maintain shape while allowing compression. Each segment contributes to the overall rigidity while the flexible connections enable deformation during dust discharge.
Solution Approach 2:
The frame transitions from a static rigid structure to a dynamic structure with flexible portions that can deflect and change shape. This allows the frame to adapt between maintaining its cuboidal shape during normal operation and compressing when external force is applied for dust discharge.
2Ease of operation
If the bag is made completely flexible for easy compression, then the bag can be easily compressed, but the bag cannot maintain its outer shape
Solution Approach 1:
Different portions of the frame have different flexibility characteristics. The rod-like members provide rigidity in certain directions to maintain shape, while the flexible portions provide compliance in other directions to enable compression. This local differentiation of mechanical properties resolves the contradiction.
3Shape
If a traditional rigid frame is used, then the bag maintains shape, but the bag interferes with power tool layout
Solution Approach 1:
The dynamic frame structure allows the bag to maintain its cuboidal shape during normal operation for proper dust collection, but can be compressed when needed. This reduces the overall space requirement and allows for more compact power tool integration without sacrificing functional shape maintenance.
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 enhances dust discharge convenience, prevents the bag from sagging, and allows for a compact power tool layout by maintaining the bag's shape and enabling efficient dust collection.
Implementation Method 1
at least one flexible portion coupled with the at least one non-flexible portion and extending in an intersection direction intersecting with the first direction and the second direction so as to have flexibility in the first direction. The frame may be configured to be extensible and compressible in the first direction due to the at least one flexible portion deflected when an external force is applied in the first direction.
Data Source
AI summary
A dust bag includes a frame disposed inside the bag main body. The frame includes at least one non-flexible portion extending in the first direction and/or a second direction perpendicular to the first direction so as not to have flexibility in the first direction, and at least one flexible portion coupled with the at least one non-flexible portion and extending in an intersection direction intersecting with the first direction and the second direction so as to have flexibility in the first direction. The frame is configured to be extensible and compressive in the first direction due to the at least one flexible portion deflected when an external force is applied in the first direction. A total width of the at least one flexible portion in the first direction is equal to or wider than a total width of the at least one non-flexible portion in the first direction.