Working Tool Handle Mount Structure for Compact Power Tools
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Solution Overview
Problem
Conventional working machines that rotate tools using motor power face issues with increased size and cumbersome attachment mechanisms for holding tools.
Innovation Solution
A working machine design featuring a transmission mechanism, a case with an attaching hole for the holding tool, and an intermediate member that supports the holding tool radially, allowing for easy attachment and reduced size, utilizing a screw mechanism for secure fixation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a dedicated holder is used to attach the holding tool to the main body, then the attachment is secure, but the size of the working machine increases
Solution Approach 1:
The holder is merged with the housing by forming it as an integrated structure where the holder becomes part of the housing itself. The attaching hole is directly formed in the housing, eliminating the need for a separate dedicated holder component while maintaining secure attachment functionality.
2Reliability
If a dedicated holder with multiple components is used, then the attachment is secure, but the attachment process becomes troublesome
Solution Approach 1:
The holder and housing are combined into a single integrated structure, reducing the number of components and simplifying the attachment process. The attaching hole is directly formed in the housing, allowing the holding tool to be attached directly without requiring assembly of multiple holder components.
Solution Approach 2:
The housing serves multiple functions: it houses the motor and simultaneously provides the attaching hole for the holding tool. This multi-functionality eliminates the need for a separate dedicated holder, making the attachment process simpler while maintaining security.
3Adaptability or versatility
If a ring-shaped holder with cutout portion is used, then the holding tool can be attached, but the device complexity increases
Solution Approach 1:
The holder structure is merged with the housing, eliminating the need for a separate ring-shaped holder with cutout portions. The attaching hole is directly formed in the housing, reducing structural complexity while maintaining the ability to attach the holding tool.
Solution Approach 2:
The dedicated holder component is extracted from the system and its functionality is integrated into the housing. Only the essential attaching hole remains, eliminating unnecessary structural elements like the ring shape and cutout portions.
Data Source
AI summary
In order to provide a working machine capable of suppressing an increase in size, a working machine that rotates a working tool with motive power of a motor includes a transmission mechanism that transmits a rotational force of the motor to the working tool, a front case in which the transmission mechanism is disposed, a holding tool that is attached to the front case so as to protrude from an outer surface of the case and is gripped by a worker, and an attaching hole which is provided in the front case and to which the holding tool is attached, and the attaching hole penetrates the front case in plan view intersecting with an axis that is a rotation center of the working tool.