Brake Rod Guard Assembly for Obstacle-Induced Deformation

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Solution Overview

Problem

Traveling vehicles used for land cultivation or reclamation often experience brake rod deformation due to obstacles, leading to brake failure, and existing solutions to mitigate this involve costly design changes and guard installations.

Innovation Solution

A guard assembly with a pair of guards extending in the front-back direction below the brake rods, overlapping them vertically, reduces upward thrust on the brake rods and protects against lower surface impacts, thereby minimizing deformation without significant cost increases.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a guard surrounds the periphery of the brake rod to prevent deformation, then the brake rod deformation is reduced, but the cost of the traveling vehicle significantly increases

Engineering Contradiction:
Improvebrake rod deformation preventionVSAvoidvehicle cost
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The guard is positioned specifically below the brake rod to protect only the critical lower portion that is most susceptible to deformation from obstacles. This localized protection approach prevents the need for a complete surrounding guard, thereby reducing material costs and manufacturing complexity while maintaining adequate protection where it is most needed.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The guard structure is divided into multiple segments (first guard and second guard) that can be independently positioned and installed. This segmentation allows for flexible installation and reduces the overall material required compared to a continuous surrounding guard, while still providing effective protection against deformation.

Inventive Principle:
Principle #1Segmentation

2Reliability

If a guard is installed below the brake rod to absorb upward thrust, then brake rod deformation is reduced, but the device complexity increases

Engineering Contradiction:
Improvebrake rod deformation preventionVSAvoidguard assembly structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The guard assembly serves multiple functions: it absorbs upward thrust from obstacles, prevents lateral deformation, and can be integrated with existing vehicle structures. By designing the guard to perform multiple protective functions simultaneously, the need for additional separate protective components is reduced, thereby managing device complexity while maintaining comprehensive protection.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS11964639B2Traveling vehicle
Publication Date: 2024.04.23 KUBOTA CORP
  • US11964639B2 patent drawing
  • US11964639B2 patent drawing
  • US11964639B2 patent drawing

AI summary

A traveling vehicle includes a mechanical brake link mechanism to transmit operation of a brake pedal to a brake device housed in a case and to control brakes of right and left rear wheels. The brake link mechanism includes a pair of brake rods extending in a front-back direction at sides of the case. A guard assembly includes a pair of guards extending in the front-back direction below the pair of brake rods. The pair of brake rods overlaps the pair of guards in a vertical direction. In a side view of the traveling vehicle, the pair of brake rods includes a higher portion positioned above a lower surface of the case to be distanced by a predetermined interval or more and positioned above the lower surface of the case, and a lower portion positioned below the higher portion. The pair of guards overlaps at least all of the lower portions in the vertical direction.