Power Tool Rear Operation Display for Balance and Visibility

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing power tools often face challenges in ease of operation and visibility due to the location of the operation-and-display part, which can also affect the weight balance of the tool.

Innovation Solution

A power tool design that positions the operation-and-display part at the rear portion of the housing, connected to the control circuit board, allowing for improved ease of operation and visibility while optimizing the weight balance by eliminating the need for a front-mounted operation-and-display part.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If the operation-and-display part is positioned at the front portion of the housing, then visibility might be improved, but ease of operation is impaired

Engineering Contradiction:

ImprovevisibilityVSAvoidease of operation

Core Design Contradiction:

Illumination intensityVSEase of operation

Solution Approach 1:

The operation-and-display part is positioned at the rear portion of the housing instead of the conventional front portion. This inverted arrangement allows the user to view and operate the display with their dominant hand while maintaining a natural gripping posture, resolving the contradiction between visibility and ease of operation.

Inventive Principle:

Principle #13The other way round (Inversion)

2Ease of operation

If the operation-and-display part is positioned at the front portion of the housing, then ease of operation might be improved, but weight balance is impaired

Engineering Contradiction:

Improveease of operationVSAvoidweight balance

Core Design Contradiction:

Ease of operationVSWeight of moving object

Solution Approach 1:

By inverting the position of the operation-and-display part from front to rear, the weight distribution of the power tool is optimized. The rear positioning allows for better balance when the user grips the tool, as the weight is distributed more favorably along the length of the housing, resolving the contradiction between ease of operation and weight balance.

Inventive Principle:

Principle #13The other way round (Inversion)

3Ease of operation

If the operation-and-display part is positioned at the rear portion of the housing, then ease of operation and visibility are improved, but device complexity increases

Engineering Contradiction:

Improveease of operationVSAvoiddevice complexity

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The operation-and-display part is designed to perform multiple functions including displaying operational status, accepting user input through buttons or touch, and providing feedback. By integrating these functions into a single rear-positioned unit, the design achieves improved ease of operation without proportionally increasing device complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS20250153319A1Power tool and impact driver

Publication Date: 2025.05.15 MAKITA CORP

AI summary

A power tool includes: a motor having a rotor, which rotates about a motor rotational axis extending in a front-rear direction; an output part, which is disposed more forward than the motor and is rotated in response to rotation of the rotor; a housing including: a motor-housing part, which houses the motor; a grip part, which extends downward from the motor-housing part; a battery-holding part, which is connected to a lower-end portion of the grip part; a control circuit board, which is housed in the housing; and an operation-and-display part, which is disposed at a rear portion of the housing and is electrically connected to the control circuit board.