Automatic Transmission Clutch for Compact Forward-Reverse Gearboxes
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Solution Overview
Problem
Current transmission boxes for rolling machines lack efficiency while maintaining compactness and simplicity, particularly in their clutch mechanisms which require complex control systems and quick-wear parts.
Innovation Solution
A transmission housing with an automatic clutch mechanism that operates in both forward and reverse directions without the need for a dedicated control member, utilizing a movable part that transitions between engaged and disengaged states through bearing contact, eliminating the requirement for springs and maintaining a simple architecture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional clutch mechanisms are used with dedicated control elements, then the clutch can be controlled, but the device complexity increases and quick-wear parts are required
Solution Approach 1:
The clutch mechanism automatically engages and disengages based on the rotational speed difference between the drive element and shaft, without requiring external control elements. The movable part self-adjusts its position according to the speed differential, eliminating the need for forks, levers, or other dedicated control components.
Solution Approach 2:
The patent replaces the traditional mechanical control system (forks, levers, springs) with a direct mechanical coupling system where the movable part is driven by the rotating drive element itself. The control function is achieved through the inherent mechanical interaction between the drive element and movable part, eliminating complex control mechanisms.
2Ease of operation
If automatic clutch mechanisms are used, then operation is simplified, but the mechanism may require complex components like springs that wear quickly
Solution Approach 1:
The patent eliminates springs and other elastomeric components that are prone to wear and degradation. The clutch mechanism uses only rigid mechanical parts that can be easily replaced if needed, avoiding components with limited service life due to material degradation.
Solution Approach 2:
The patent removes springs and elastomeric elements from the clutch mechanism entirely. The automatic engagement and disengagement functions are achieved through pure mechanical interaction between rigid components, extracting the problematic elastomeric elements from the system.
3Volume of moving object
If the transmission box is made compact, then space is saved, but the clutch mechanism design becomes more constrained
Solution Approach 1:
The movable part of the clutch mechanism is integrated within the housing space, nested around the shaft. The drive system components are arranged concentrically and in compact configurations, maximizing space utilization while maintaining manufacturability.
Solution Approach 2:
The clutch mechanism components are merged with the existing transmission box structure. The housing serves multiple functions including structural support and clutch component mounting, reducing the need for separate components and reducing overall volume.
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 design enhances performance by automatically adjusting clutch states based on rotational speed differences, ensuring efficient operation in both forward and reverse gears without compromising the compactness and simplicity of the transmission box.
Implementation Method 1
to transition from the disengaged state to the engaged state when the rotational speed of said rotating driving element is greater than that of the shaft or shaft section with which the clutch mechanism is capable of cooperating
Data Source
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AI summary
Transmission gear box (1) comprising, at least partially accommodated in the housing (1), an output shaft (6), a rotating drive member (5) mounted to rotate freely about the shaft (6), a system (2) for rotating the rotating drive member (5) in forward and reverse gear and, arranged between the shaft (6) and the rotating drive member (5), a clutch mechanism (3) having an engaged state and a disengaged state, wherein the shaft (6) is free to rotate in any of the directions of rotation thereof, the automatic clutch mechanism (3) being configured, in forward gear, to shift from the disengaged state to the engaged state by rotating in forward gear the motor member (5) when the speed of rotation of the rotating drive member (5) is higher than that of the shaft (6), and from the engaged state to the disengaged state by rotating in forward gear the shaft (6) when the speed of rotation of the shaft (6) is higher than the speed of rotation of the rotating drive member (5). The clutch mechanism (3, 4) is also automatic in reverse gear.