Integrated Locking Mechanism With V-Shaped Flexible Blade
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Solution Overview
Problem
Existing blocking mechanisms for vehicle transmission trees are cumbersome, difficult to assemble, and occupy too much space, particularly in modern electric vehicle transmissions, while also requiring complex assembly operations and lacking sufficient mechanical resistance.
Innovation Solution
A compact blocking mechanism featuring a mobile ratchet with a locking finger, a thrust device with a cam capacity, and a swivel activation lever with a V-shaped flexible blade positioning organ, which simplifies assembly, reduces size, and maintains mechanical resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a traditional positioning member with flexible blade is used in the locking mechanism, then the positioning function is achieved, but the device occupies excessive space and assembly complexity increases
Solution Approach 1:
The patent merges the positioning member and actuating lever into a single integrated component. The positioning member is formed as one piece with the actuating lever, eliminating the need for separate positioning fingers and reducing the number of parts. This integration directly reduces device complexity and assembly steps while maintaining the positioning function through the preserved notched structure.
Solution Approach 2:
The integrated positioning member serves multiple functions simultaneously: it acts as both the actuating lever for moving the pawl and the positioning element for maintaining stable angular positions. The single component performs what previously required separate positioning fingers and actuating levers, reducing overall mechanism size and simplifying the device structure.
2Volume of moving object
If components are fixed along non-parallel fixing axes to improve compactness, then space is reduced, but assembly operations become more complex
Solution Approach 1:
By integrating the positioning member with the actuating lever, the patent reduces the total number of components that require fixing to the transmission casing. This integration simplifies assembly operations despite the use of non-parallel fixing axes, as fewer parts need to be installed and positioned.
3Strength
If the flexible blade is made more rigid to maintain mechanical strength, then mechanical resistance improves, but the device occupies more space
Solution Approach 1:
The integrated positioning member features localized reinforcement at critical stress points, particularly at the root of the flexible blade where it joins the actuating lever. This allows the blade to maintain sufficient mechanical strength for positioning while keeping the overall dimensions compact. The notched structure provides geometric reinforcement without increasing 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
The solution provides a more compact, easier-to-assemble blocking mechanism that maintains sufficient mechanical resistance, addressing the challenges of space constraints and complex assembly in modern vehicle transmissions.
Implementation Method 1
The positioning member comprises a flexible blade exerting a force, directly or indirectly, on the external periphery of the actuating lever
Data Source
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AI summary
The invention relates to a locking mechanism comprising: - a movable pawl (34) pivotally mounted between a locking position and a released position, the movable pawl comprising a cam surface (36); - a push device (38) comprising a cam follower (42) moving on the cam surface to move the movable pawl from the released position to the locking position; - an actuating lever (3) moving the push device and comprising a first notch and a second notch; - a positioning member (2) engaging in the first notch in the locking position and in the second notch in the released position; the positioning member comprising a flexible blade (200) comprising a form folded upon itself to form a V-shape.