Die Grinder Orthogonal Battery Mount for Compact Grip
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Solution Overview
Problem
Existing die grinders face challenges in providing a grip part that can be suitably held by a user without increasing the overall size of the tool, particularly in narrow spaces.
Innovation Solution
The die grinder design includes a battery housing with a battery mounting part arranged orthogonally to the drive axis, a compact motor housing, and a handle housing with an elongate grip part, ensuring the grip part can be easily held while maintaining a shorter overall length.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the length of the grip part is increased to improve workability, then the grip part can be more comfortably held by a user, but the whole length of the rotary tool is increased
Solution Approach 1:
The battery mounting part is positioned at the rear end of the handle housing in a direction orthogonal to the drive axis, utilizing the radial dimension rather than extending the axial length. This allows the grip part to be sufficiently long for comfortable holding while keeping the overall tool length compact.
2Reliability
If the battery is obliquely mounted to the battery mounting part, then the battery can be securely mounted, but the length of the battery housing in the front-rear direction increases
Solution Approach 1:
The battery mounting part is configured with a mounting direction orthogonal to the drive axis, utilizing the radial dimension for battery attachment. This orthogonal mounting approach secures the battery reliably while minimizing the front-rear length of the battery housing.
Data Source
AI summary
A die grinder includes a motor, a spindle and a main housing. The spindle is rotated around a drive axis that defines a front-rear direction of the die grinder. The main housing includes a motor housing, a handle housing and a battery housing. The handle housing is connected to a rear end of the motor housing and has an elongate grip part configured to be held by a user. The battery housing is connected to a rear end of the handle housing and has a battery mounting part configured such that the battery is mounted thereto. The battery mounting part is arranged in a position through which the drive axis passes and configured such that the battery is mounted in a direction orthogonal to the drive axis. A center axis of the grip part is arranged outward of the drive axis in a radial direction.