Gearbox Shifting Device Movable Receptacle Coupling
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Solution Overview
Problem
Existing switching devices for automatic vehicle transmissions face challenges in reliably coupling and decoupling the actuating lever from the transmission component, leading to wear and potential damage due to misalignment and force imbalances.
Innovation Solution
A movably mounted receptacle with a spring device, such as a leaf spring, allows for flexible coupling and decoupling of the actuating lever with the transmission component, ensuring precise engagement without wear, using a tapered receptacle and projection design for a form-fit engagement and minimizing rattling noises.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a rigid coupling mechanism is used between the actuating lever and transmission component, then precise engagement is achieved, but wear and damage occur due to misalignment and force imbalances
Solution Approach 1:
The receptacle is made movable relative to the actuating lever, allowing dynamic adjustment during engagement. This movement capability enables the coupling mechanism to accommodate misalignment and force imbalances, preventing wear and damage while maintaining engagement precision
Solution Approach 2:
The engagement parameters are changed by allowing positional variation of the receptacle. Instead of fixed rigid coupling, the system permits controlled movement and adjustment of engagement parameters to adapt to operational conditions, reducing stress and wear
2Stability of the object's composition
If the receptacle is rigidly fixed, then structural stability is maintained, but coupling reliability decreases when the actuating lever is not exactly in the intended position
Solution Approach 1:
The receptacle transitions from a rigid fixed state to a movable state, enabling it to adapt its position when the actuating lever is slightly misaligned. This dynamic capability ensures reliable coupling while maintaining overall structural stability through controlled movement within defined limits
3Power
If rigid components engage directly, then force transmission is efficient, but wear and damage occur at the engagement edges
Solution Approach 1:
The movable receptacle acts as an intermediary between the actuating lever and the transmission component. It absorbs and distributes forces, preventing direct edge-to-edge contact that would cause wear and damage, while still maintaining efficient force transmission through the coupling mechanism
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 enables reliable and wear-resistant coupling and decoupling of the actuating lever, preventing damage and noise, while allowing operation in both intended and unintended positions, enhancing the durability and performance of the switching device.
Implementation Method 1
the receptacle is movably mounted against the force of a spring device, which can have a leaf spring, for example
Data Source
AI summary
The invention relates to a shifting device for a gearbox, particularly an automatic gearbox, of a motor vehicle, comprising an actuating lever, which can be moved into different positions in order to select gears, and a movably supported transmitting component for transmitting movements of the actuating lever to at least one additional component, particularly to a cable control. The actuating lever can alternatively be decoupled from the transmitting component or coupled to the transmitting component. The shifting device is characterised in that, in order to cause a coupling, a projection of the actuating lever engages with a receptacle that is movably fastened on and/or in the transmitting component. Alternatively or additionally, it can be provided that, in order to cause a coupling, a projection of the transmitting component engages with a receptacle that is movably fastened on and/or in the actuating lever.