Motor Bracket Layout for Compact Vibration-Protected Electronics

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Solution Overview

Problem

Existing motors face challenges in reducing size due to the need for a large space to protect electronic components from vibration, hindering compact design.

Innovation Solution

The motor design incorporates a frame, bracket, cover, and electronic components where the bracket has a first portion accommodated in the frame and a second portion protruding into the cover, with electronic components disposed at the second portion, allowing for a compact arrangement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a large space is ensured to protect electronic components from vibration, then reliability is improved, but motor size increases

Engineering Contradiction:

Improveprotection of electronic componentVSAvoidmotor size

Core Design Contradiction:

ReliabilityVSVolume of moving object

Solution Approach 1:

The electronic component is nested within the bracket structure, which itself is contained within the motor housing. The bracket serves as both a mounting structure and a protective enclosure, with the electronic component positioned in the second portion of the bracket that extends into the cover space, effectively nesting multiple functions within a compact arrangement.

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The bracket is designed with a three-dimensional structure that extends in multiple directions - the first portion accommodates the brush in the radial direction while the second portion extends axially into the cover to accommodate the electronic component. This multi-dimensional arrangement allows compact integration without requiring additional radial space.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Volume of moving object

If electronic component is disposed at the second portion of bracket protruding into cover, then motor size is reduced, but protection from vibration may be compromised

Engineering Contradiction:

Improvemotor sizeVSAvoidprotection of electronic component

Core Design Contradiction:

Volume of moving objectVSReliability

Solution Approach 1:

The bracket merges multiple functions into a single component: it serves as the mounting structure for the brush, the support for the electronic component, and the protective enclosure. By combining these functions, the design achieves compact size while maintaining protection, as the bracket's rigid structure provides vibration resistance without requiring separate protective housings.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The bracket exhibits different structural characteristics in its different portions - the first portion is designed for mechanical connection with the brush and frame, while the second portion extending into the cover is optimized for accommodating and protecting the electronic component. This localized structural optimization allows the electronic component to be protected within the compact space available in the cover region.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS12355310B2Motor

Publication Date: 2025.07.08 MINEBEAMITSUMI INC

AI summary

A motor includes a frame, a bracket, a brush, a cover, and an electronic component. The bracket includes a first portion accommodated in the frame and a second portion protruding from the first portion toward the cover. The second portion is accommodated in the cover. The brush is disposed at the first portion of the bracket. The electronic component is disposed at the second portion of the bracket.