Compact Drill Dust Collector Layout for Better Grip Clearance

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Solution Overview

Problem

Conventional dust collectors attached to drilling tools are bulky, limiting the operability of pistol-type drilling tools due to their size, particularly the length of the tool body and dust collector, which obstructs the user's hand grip and requires a larger space between the dust collector and the grip part.

Innovation Solution

A compact dust collector design that is removably attached to the drilling tool, featuring a sliding part with a suction port, a dust transfer passage, and a tool connection passage, where the filter is positioned forward of the inlet to minimize the rearward portion of the dust storing part, allowing the dust collector to be shortened while maintaining sufficient space for the filter and user hand grip.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Length of moving object

If the dust collector is made compact to improve operability, then the length of the tool body is reduced, but the space required for the filter and internal passages is reduced

Engineering Contradiction:

Improvelength of dust collectorVSAvoidarrangement of filter and passages

Core Design Contradiction:

Length of moving objectVSDevice complexity

Solution Approach 1:

The patent repositions the filter from a conventional rearward location to a forward location within the dust collector body. This dimensional rearrangement allows the dust storing part to be minimized in rearward extension, enabling the overall dust collector length to be reduced while maintaining adequate space for the filter and air flow passages.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The patent inverts the conventional arrangement by placing the filter forward of the inlet rather than rearward. This inversion allows the dust storing space to be compact in the rearward direction, which directly contributes to reducing the overall length of the dust collector and improving operability.

Inventive Principle:

Principle #13The other way round (Inversion)

2Ease of operation

If the filter is positioned rearward of the inlet, then the air flow path is conventional, but the dust storing part becomes bulky and increases overall length

Engineering Contradiction:

ImproveoperabilityVSAvoidvolume of dust storing part

Core Design Contradiction:

Ease of operationVSVolume of moving object

Solution Approach 1:

The patent inverts the conventional filter positioning by placing it forward of the inlet. This inversion allows the dust storing part to be minimized in the rearward direction, reducing its bulk and enabling the dust collector to be more compact without compromising the air flow path functionality.

Inventive Principle:

Principle #13The other way round (Inversion)

3Ease of operation

If the dust collector length is reduced, then operability is improved, but the space for air flow management and dust separation is reduced

Engineering Contradiction:

ImproveoperabilityVSAvoidair flow efficiency

Core Design Contradiction:

Ease of operationVSUse of energy by moving object

Solution Approach 1:

The patent repositions the filter forward within the dust collector body, creating efficient spatial arrangement that maintains adequate air flow path length while reducing the overall rearward extension. This dimensional optimization allows compact design without compromising air flow efficiency for dust separation.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The patent incorporates a sliding part that can move forward and rearward within the dust collector. This dynamic element allows the suction port to be positioned optimally during operation while maintaining a compact overall design, balancing operability with sufficient space for air flow management.

Inventive Principle:

Principle #15Dynamics

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 compact design enhances operability by reducing the overall length of the dust collector, allowing for easier handling and reduced interference with the grip part, while maintaining efficient dust collection and air flow management.

Implementation Method 1

The filter is configured to separate the dust from the air flow

Methodology Applied

Scientific EffectFiltration: Filter (physical)

Implementation Method 2

collect dust by using an air flow generated by the drilling tool and led into the tool body from the inlet

Methodology Applied

Scientific EffectAir flow transport: Advection

Data Source

PatentUS11446780B2Dust collector

Publication Date: 2022.09.20 MAKITA CORP

AI summary

A dust collector includes a body configured to be removably attached to a lower side of a tool body of a drilling tool, a dust storing part to be disposed on a lower side of the body, a sliding part having a suction port and held by the body so as to be slidable in a front-rear direction, a dust transfer passage extending within the sliding part and connecting the suction port and an inlet of the dust storing part, and a tool connection passage disposed within an internal space of the body and configured to connect an outlet of the dust storing part and an inlet of the tool body of the drilling tool. The dust storing part includes the inlet, a filter, a dust storing space and the outlet. The filter is disposed forward of the inlet of the dust storing part.