Tractor Coupling Insertion Indication for Faster Hitch Connection

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Solution Overview

Problem

It is difficult for users to visually determine complete insertion of the vehicle head connecting end into the traction rear arm during the mounting and connection process of a vehicle tractor, leading to inefficient and troublesome adjustments.

Innovation Solution

The vehicle tractor incorporates an insertion prompting mechanism with a turning-over plate and meshing gears that indicate complete insertion through positional cues, and an interface switching mechanism for quick access to connection components.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If visual observation is used to determine insertion completion, then the structure remains simple, but the user cannot accurately determine whether complete insertion has occurred

Engineering Contradiction:
Improveinsertion detection accuracyVSAvoidstructure complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent uses a prompting column with different colored sections (red and green) to indicate insertion status. When the vehicle head connecting end is completely inserted, the green section becomes visible, providing clear visual feedback to the user without requiring complex measurement devices.

Inventive Principle:
Principle #32Color changes

Solution Approach 2:

The turning-over plate acts as an intermediary mechanism that translates the insertion depth into a visible indication. As the vehicle head connecting end inserts, it pushes the turning-over plate, which in turn moves the prompting column to display the appropriate color, mediating between the physical insertion and visual confirmation.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Manufacturing precision

If multiple adjustments of insertion position are needed, then connection accuracy can be improved, but the operation time and complexity increase

Engineering Contradiction:
Improveconnection precisionVSAvoidconnection time
Core Design Contradiction:
Manufacturing precisionVSLoss of time

Solution Approach 1:

The insertion prompting mechanism provides immediate visual feedback through the color-changing prompting column. Users can see at a glance whether complete insertion has been achieved, eliminating the need for multiple trial adjustments and reducing connection time while maintaining precision.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The mechanism is designed to automatically indicate the correct insertion position through the turning-over plate and prompting column before the user needs to make adjustments. This preliminary visual guidance prevents unnecessary trial-and-error adjustments.

Inventive Principle:
Principle #10Preliminary action

3Productivity

If pin shafts are stored separately for quick access, then connection speed is improved, but the device structure becomes more complex

Engineering Contradiction:
Improveconnection speedVSAvoidmechanism complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The interface switching mechanism segments the storage space into distinct compartments (storage box and separating box) that can be independently accessed. Pin shafts are stored in an organized manner within these segmented spaces, allowing for quick retrieval without disrupting the overall structure.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The pin shafts are extracted from the main body and stored in a separate, easily accessible interface switching mechanism. This external storage solution provides quick access to connection components without adding significant complexity to the core traction structure.

Inventive Principle:
Principle #2Taking out (Extraction)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Facilitates efficient and quick connection by visually confirming complete insertion and providing easy access to connection components, enhancing operational efficiency and convenience.

Implementation Method 1

damping telescopic rods

Methodology Applied
Scientific EffectDamping: Damping

Implementation Method 2

meshing gear

Methodology Applied
Scientific EffectGear mechanism: Gear

Implementation Method 3

turning-over plate

Methodology Applied
Scientific EffectRotation:

Data Source

PatentUS20250381810A1Vehicle tractor
Publication Date: 2025.12.18 SHENZHEN YATU TRADING CO LTD
  • US20250381810A1 patent drawing
  • US20250381810A1 patent drawing
  • US20250381810A1 patent drawing

AI summary

The present invention relates to the field of tractors, and discloses a vehicle tractor. The vehicle tractor includes a traction front arm which is inserted and mounted in a trailer inserting end, and a traction rear arm which is mounted at a vehicle head connecting end. Through an arranged insertion prompting mechanism, under the action of damping telescopic rods and a connecting spring, a turning-over plate is abutted against the vehicle head connecting end, whereby a limiting effect is achieved, and the vehicle head connecting end is prevented from sliding; and on the other hand, when the turning-over plate turns over, the meshing gear on a front side of the turning-over plate moves upwards to be meshed with the transmission gear, at this time, the transmission gear rotates clockwise, connecting arms connected to the transmission gear through transmission shafts rotate clockwise along with the transmission gear.