Automatic Gear Shift Lever Actuation for Parking Position
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Solution Overview
Problem
There is a risk of accidental vehicle movement due to drivers failing to shift the gear stage to the parking gear stage after completing driving, leading to potential accidents.
Innovation Solution
A transmission apparatus and system that automatically shifts the gear stage to the parking gear stage without a detent when the ignition is turned off, using a gear shift lever, detent groove, driver, and actuator to pivot the gear shift lever and separate it from the detent groove, allowing for smooth transition without resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the gear shift lever contacts the detent groove to generate detent during gear shifting, then the gear stage positioning is stable and secure, but the gear shifting produces resistance and requires manual force that may not be sufficient when the ignition is off
Solution Approach 1:
The system performs preliminary detection of the ignition state before gear shifting occurs. When the ignition is detected to be off, the control unit preemptively activates the driver to generate driving force that separates the detent groove from the gear shift lever, eliminating detent resistance before the shifting action is attempted, thus ensuring smooth and easy gear stage transition.
Solution Approach 2:
The system dynamically adjusts the interaction between the detent groove and gear shift lever based on ignition state. When ignition is on, normal detent contact is maintained for stable positioning. When ignition is off, the driver dynamically separates the detent groove from the gear shift lever, changing the mechanical interaction from contact with resistance to separation without resistance, enabling easy gear shifting.
2Ease of operation
If the driver generates driving force to separate the detent groove from the gear shift lever, then the gear stage can be shifted without detent resistance, but additional components (driver, driving force transmitter) are required
Solution Approach 1:
The system uses the existing ignition state detection capability to automatically trigger the driver operation. The control unit monitors the ignition state and autonomously activates the driver when needed, eliminating the need for manual intervention or complex additional control mechanisms. The system serves itself by using its own state information to initiate the necessary action for smooth gear shifting.
Solution Approach 2:
The driver and driving force transmitter are designed to serve multiple functions: they not only separate the detent groove during ignition-off conditions to enable smooth shifting, but also work in coordination with the existing gear shifting mechanism during normal operation. The support structure also serves dual purposes by providing both structural support and housing for the driver mechanism.
Data Source
AI summary
Provided herein are a transmission apparatus and a transmission system. The transmission apparatus includes a gear shift lever configured to receive a user command for shifting gear stages, a detent groove configured to be in contact with the gear shift lever and generate detent when the gear stages are shifted by the gear shift lever, a driver configured to generate a driving force when the ignition is turned off in a state in which the gear shift lever is positioned at a non-parking gear stage, and a driving force transmitter configured to separate the detent groove from the gear shift lever by the driving force.