Swivel Base Rear Cover Reinforcement for Battery Impact Protection

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Solution Overview

Problem

Swivel working machines face challenges with weight balance due to heavy batteries, risk of damage from external impacts, inefficient power transmission harness management, and difficulties in accessing and maintaining electrical components.

Innovation Solution

Incorporation of a reinforcement structure with buffers and a support frame to absorb impact, secure harnesses, and provide easy access for inspection and maintenance through inspection windows and a simplified bracket system for electrical components.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If the battery is mounted at the rear portion of the swivel base, then the working device can be driven by electric power output from the battery, but the weight balance between the front and rear of the machine body deteriorates and external impacts can damage devices mounted on the swivel base

Engineering Contradiction:

Improveelectric power output from the batteryVSAvoidweight balance between front and rear

Core Design Contradiction:

Use of energy by moving objectVSStability of the object's composition

Solution Approach 1:

A counterweight is provided at the rear portion of the swivel base to balance the weight of the battery and other devices. The counterweight compensates for the rearward weight shift caused by mounting the battery at the rear, thereby maintaining proper weight balance between the front and rear of the machine body during operation.

Inventive Principle:

Principle #8Anti-weight (Counterweight)

Solution Approach 2:

A reinforcement structure is provided at the rear portion of the swivel base to prevent or reduce deformation caused by external impacts. This reinforcement structure acts as a protective measure in advance, cushioning the battery and other devices from damage when external forces are applied to the rear portion.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

2Area of stationary object

If multiple electrical components are mounted in a limited space on the swivel base, then the machine can be compact, but the harness becomes vulnerable to damage from vibrations and external impacts

Engineering Contradiction:

Improvespace on the swivel baseVSAvoidharness resistance to damage

Core Design Contradiction:

Area of stationary objectVSReliability

Solution Approach 1:

The harness is segmented into multiple sections with each section independently routed and secured along different paths on the swivel base. This segmentation allows the harness to flex and move independently in response to vibrations and impacts, preventing concentrated stress and damage at single points.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Harness guides or protective channels are provided as intermediary structures to route and protect the harness between electrical components. These intermediaries shield the harness from direct exposure to vibrations and external impacts while maintaining efficient power transmission between components.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Stability of the object's composition

If electrical components are mounted at predetermined positions on the swivel base, then the machine structure can be stable, but the attachment process becomes inefficient and prone to variations in accuracy

Engineering Contradiction:

Improvemachine structure stabilityVSAvoidattachment efficiency

Core Design Contradiction:

Stability of the object's compositionVSProductivity

Solution Approach 1:

Multiple electrical components are mounted on a single removable bracket rather than being individually attached to the swivel base. This merging of mounting functions allows all components to be installed and positioned simultaneously as one unit, dramatically improving attachment efficiency while maintaining structural stability through the bracket's designed mounting positions.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The bracket is pre-configured with predetermined mounting positions and attachment features before being installed on the swivel base. This preliminary preparation ensures that when the bracket is mounted, all electrical components are already correctly positioned and secured, eliminating variations in attachment accuracy and improving overall installation efficiency.

Inventive Principle:

Principle #10Preliminary action

4Strength

If electrical components are mounted inside the swivel base for protection, then the machine structure is protected, but the components become difficult to access for inspection and maintenance

Engineering Contradiction:

Improvestructural protectionVSAvoidaccessibility for inspection and maintenance

Core Design Contradiction:

StrengthVSEase of operation

Solution Approach 1:

The bracket is designed as a removable component that can be easily detached from the swivel base. This dynamic mounting arrangement allows electrical components to be protected during normal operation while enabling quick and easy access for inspection and maintenance by simply removing the bracket, eliminating the need for complex disassembly procedures.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS20250019927A1Swivel working machine

Publication Date: 2025.01.16 KUBOTA CORP

AI summary

A swivel working machine includes a swivel base, a battery at a rear portion of the swivel base, a working device in front of the swivel base and drivable by electric power output from the battery, a rear portion exterior cover at the rear portion of the swivel base to cover a side, facing rearward of a machine body, of a space in which the battery is provided, and a reinforcement structure inward of the rear portion exterior cover with respect to the machine body to prevent or reduce deformation of the rear portion exterior cover inward with respect to the machine body due to an external force.