Clutch Pedal Locking Plate Structure Without Dash Panel Mounting

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Solution Overview

Problem

Conventional clutch pedal locking devices are difficult to apply to work vehicles without a component for attachment on the engine room side, such as a dash panel or mount member, limiting their installation in certain vehicles.

Innovation Solution

A clutch pedal locking device with a simple structure, comprising a clutch pedal, a stay, a first plate attached to the clutch pedal, a first fixed portion on the vehicle body, and a rotation plate that rotates to lock the pedal in a stepped position, using a keyhole-shaped through-hole mechanism to ensure secure locking without additional engine room components.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a conventional clutch pedal locking device is attached to the front side of the clutch pedal, then the clutch pedal can be locked in a stepped-on state, but it becomes difficult to apply the device to work vehicles without a dash panel or mount member for attachment

Engineering Contradiction:
Improvelocking reliabilityVSAvoidadaptability to different vehicle types
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The locking device is divided into separate functional modules: a locking member that engages with the clutch pedal, a rotation member that provides the locking action, and a separate attachment mechanism. This segmentation allows the core locking function to be adapted to different vehicle types without requiring a complete redesign, enabling installation on various attachment surfaces including the steering wheel and dashboard.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The attachment mechanism is designed with universal adaptability to accommodate different vehicle types and attachment surfaces. The mechanism can be mounted on various components such as the steering wheel, dashboard, or other suitable surfaces, making it applicable to work vehicles regardless of whether they have a traditional dash panel or mount member.

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

2Reliability

If additional components such as a dash panel or mount member are added to enable locking, then the clutch pedal can be locked reliably, but the device complexity and cost increase

Engineering Contradiction:
Improvelocking reliabilityVSAvoidstructure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The attachment mechanism is integrated with the existing vehicle components rather than requiring separate additional structures. The locking member can be attached directly to available surfaces such as the steering wheel or dashboard, merging the locking function with existing vehicle anatomy and avoiding the need for separate dash panels or mount members.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The locking device utilizes the existing structural features of the vehicle (such as the steering wheel or dashboard surfaces) as attachment points, rather than requiring the vehicle to provide specialized mounting components. This self-service approach allows the locking device to function reliably using the vehicle's existing structure.

Inventive Principle:
Principle #25Self-service

3Ease of manufacture

If a simple locking mechanism is used, then the device cost is reduced, but the risk of erroneous locking during normal driving increases

Engineering Contradiction:
Improvemanufacturing simplicityVSAvoidanti-erroneous locking
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The rotation member is designed to rotate between locked and unlocked positions based on operational needs. This dynamic capability allows the simple locking mechanism to be reliably engaged or disengaged, preventing erroneous locking during normal driving while maintaining manufacturing simplicity. The rotation mechanism responds to user input or operational conditions to adjust the locking state appropriately.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The locking mechanism incorporates feedback through the rotation member's engagement state, which can be sensed or indicated to confirm whether the clutch pedal is locked or unlocked. This feedback ensures that the simple mechanism does not lock erroneously during normal driving, as the system can detect and respond to the actual operational state.

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS12145439B2Clutch pedal locking device
Publication Date: 2024.11.19 KUBOTA CORP
  • US12145439B2 patent drawing
  • US12145439B2 patent drawing
  • US12145439B2 patent drawing

AI summary

A clutch pedal locking device includes a clutch pedal, a stay attached to the clutch pedal, a plate attached to a lower surface of the stay and extending backward from the stay, a fixed portion provided to a lateral side of the clutch pedal and fixed to a work vehicle body, and a rotation plate suspended from and supported on the fixed portion so as to be rotatable about a rotation shaft. In a case where the rotation plate rotates until a longitudinal direction becomes substantially horizontal, the rotation plate comes into contact with an upper surface of the plate and a back surface of the stay, and the clutch pedal is locked in a state of being stepped on.