Sliding Gearbox Housing for Integrated Clutch Control
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Solution Overview
Problem
Existing transmission housings for wheeled machines require a clutch control member within the housing, which increases complexity and component count, including levers, forks, and seals.
Innovation Solution
The housing body itself acts as the clutch control member, sliding along the output shaft to engage and disengage the clutch, eliminating the need for internal control members like levers and forks, thereby simplifying the design and reducing components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a clutch control member (lever, fork) is used within the housing to control clutch engagement, then the clutch can be effectively controlled, but the device complexity and number of components increases
Solution Approach 1:
The housing body is merged with the clutch control function by incorporating a control element directly into the housing structure. The housing body includes a control element that can move between positions to control clutch engagement, combining what were previously separate components (housing and control mechanism) into a single integrated structure, thereby reducing overall device complexity while maintaining control reliability
Solution Approach 2:
The housing body serves multiple functions: it provides structural enclosure for the transmission components and simultaneously acts as the clutch control mechanism. By making the housing body multi-functional, the patent eliminates the need for dedicated control members, reducing the number of components while ensuring reliable clutch operation through the housing's integrated control element
2Ease of operation
If internal control members (lever, fork, seal) are used to control clutch engagement, then precise clutch control is achieved, but the number of components and assembly complexity increases
Solution Approach 1:
The control element is merged into the housing body structure, eliminating separate control members. The housing body includes the control element as an integral part, which reduces the number of components that need to be manufactured and assembled, thereby improving ease of manufacture while maintaining precise clutch engagement control through the integrated control mechanism
3Reliability
If multiple control components (lever, fork, seal) are used within the housing, then clutch control functionality is ensured, but the transmission housing requires more seals and assembly steps
Solution Approach 1:
By merging the control element into the housing body, the patent eliminates the need for separate control components and their associated seals. The integrated structure reduces the number of interfaces requiring sealing, thereby reducing seal requirements and component count while maintaining reliable clutch control functionality through the unified housing-control element assembly
Data Source
AI summary
The invention relates to a gearbox (1) comprising: a gearbox body (1A) defining an enclosure (1B), an input shaft (2), an output shaft (3) and a mechanism (4) for transmitting the movement of the input shaft (2) to the output shaft (3), said mechanism (4) for transmitting movement comprising at least one clutch (5) and a clutch (5) control device, the clutch (5) comprising a driving element (6) and a driven element (7) mounted rotatably secured to the output shaft (3) and having its axial movement limited in at least one direction along the output shaft (3), and the clutch (5) control device comprising a member for controlling the movement of the driving element (6) and the driven element (7) towards one another to allow the clutch (5) to pass from the declutched position to the clutched position. The control member is formed by the gearbox body (1A) mounted to slide along the output shaft (3).