Loom Driving Shaft Gear Train for Easier Maintenance

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Solution Overview

Problem

Existing loom designs require complex operations for maintenance due to the need to release and reconnect the driving shaft and driving-force transmission mechanism, particularly when using pulleys and timing belts, complicating maintenance procedures.

Innovation Solution

The loom incorporates a driving-force transmission mechanism with a driving-force transmission shaft that protrudes from the side frame and is connected to the driving motor via a gear train, allowing the frame cover to be removed without disconnecting the driving shaft and transmission mechanism, and includes a separate space for the gear train within a driving box.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the driving shaft and driving-force transmission mechanism are connected via pulleys and timing belts protruding from the side frame, then the transmission function is achieved, but maintenance operations become complicated requiring release and reconnection of the transmission mechanism

Engineering Contradiction:
Improvetransmission functionVSAvoidmaintenance operation
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The invention divides the transmission system into two independent segments: the driving-force transmission mechanism (motor and pulleys) remains connected and housed in the driving box, while the frame cover can be independently removed for maintenance. This segmentation allows maintenance access without disrupting the transmission connection.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The invention extracts the driving-force transmission mechanism into a separate driving box that is independent from the frame cover assembly. This extraction allows the frame cover to be removed for maintenance while the transmission mechanism remains intact and connected within its own housing.

Inventive Principle:
Principle #2Taking out (Extraction)

2Reliability

If the driving shaft protrudes from the side frame for connection with the driving-force transmission mechanism, then the transmission connection is achieved, but the frame cover must be opened for maintenance complicating the procedure

Engineering Contradiction:
Improvetransmission connectionVSAvoidmaintenance procedure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The invention segments the overall structure into a driving box containing the transmission mechanism and a frame assembly with removable cover. This segmentation allows the frame cover to be accessed independently without requiring disconnection of the transmission components.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The driving-force transmission mechanism is extracted into a separate driving box that houses all transmission components (motor, pulleys, timing belts). This extraction eliminates the need to open the frame cover for transmission maintenance, simplifying the overall maintenance procedure.

Inventive Principle:
Principle #2Taking out (Extraction)

3Adaptability or versatility

If pulleys and timing belts are used for connecting the driving motor and driving shaft, then the transmission flexibility is achieved, but tension adjustment is required increasing operational complexity

Engineering Contradiction:
Improvetransmission flexibilityVSAvoidtension adjustment operation
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The timing belt tensioning mechanism is designed to be self-adjusting within the driving box, eliminating the need for manual tension adjustment operations. The system maintains optimal tension automatically through its internal mechanism.

Inventive Principle:
Principle #25Self-service

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

This configuration simplifies maintenance operations by eliminating the need to adjust tension in timing belts and allows independent lubrication of mechanical parts, reducing the complexity and improving maintenance efficiency.

Implementation Method 1

a gear train that connects the driving-force transmission shaft and the driving shaft

Methodology Applied
Scientific EffectGear: Gear

Data Source

PatentEP3919660B1loom
Publication Date: 2025.08.13 TSUDAKOMA KOGYO KK
  • EP3919660B1 patent drawingFigure 1
  • EP3919660B1 patent drawingFigure 2

AI summary

A driving-force transmission mechanism (80) includes a driving-force transmission shaft (82) that is provided so as to protrude from a side wall (12b) of a side frame (12) while extending parallel to a driving shaft (30) within a space of the side frame (12) and connected to a driving motor (20), and a gear train (84) that connects the driving-force transmission shaft (82) and a driving shaft (30).