Parking Lock Emergency Release Lever With Self-Securing Installation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing emergency releases for vehicle parking locks are complex to install and secure, requiring multiple components and risking component loss during installation.
Innovation Solution
A simplified emergency release lever design with a pivotable mechanism and guide projections that automatically secure without additional components, using a preloaded helical spring to maintain the normal position and a pivot pin with a key surface for easy actuation, allowing for secure installation and operation without separate securing steps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional emergency release design is used, then the parking lock can be released in emergency situations, but the installation process is complex and requires multiple securing components that may be lost
Solution Approach 1:
The patent removes securing components from the emergency release assembly, extracting only the essential functional elements (lever, pivot pin, guide projections) and eliminating unnecessary fastening parts that complicate installation and may be lost during assembly
Solution Approach 2:
The guide projections on the lever automatically engage with corresponding features on the pivot pin during installation, enabling self-alignment and self-securing without requiring separate securing components or complex assembly procedures
2Stability of the object's composition
If multiple securing components are used to secure the emergency release lever, then the lever can be firmly fixed, but the risk of component loss during installation increases
Solution Approach 1:
The patent completely removes securing components (screws, clips, fasteners) from the design, retaining only the lever, pivot pin, and guide projections that provide both movement guidance and automatic securing through geometric engagement
Solution Approach 2:
The guide projections serve dual functions: guiding the lever during installation/movement and simultaneously acting as the securing mechanism through automatic engagement with the pivot pin, eliminating the need for separate securing components
3Ease of manufacture
If the emergency release lever is designed with automatic securing through guide projections, then installation is simplified, but the mechanism requires precise geometric alignment
Solution Approach 1:
The guide projections are designed to automatically align the lever with the pivot pin during installation through self-guiding geometric engagement, eliminating the need for external alignment tools or complex positioning procedures while maintaining precise assembly
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
Facilitates easy and secure installation of the emergency release lever, reducing the risk of component loss and ensuring smooth operation with reduced component count, while maintaining the emergency release lever in a reliably defined normal position for normal vehicle operation.
Implementation Method 1
The emergency release lever can be spring-loaded into the normal position in order to always hold the emergency release lever in the normal position during the normal operation of the parking lock
Data Source
AI summary
An emergency release of a parking lock of a vehicle transmission arranged in a transmission housing 9 includes an actuating element of an actuator for actuating the parking lock is drivable so as to be linearly movable between an interlock position and a release position. The emergency release lever 3 is pivotable away from a normal position past an emergency release position into an installation position and, in a second end region, has two guide projections 15, 16, which are parallel to each other and extend radially toward the pivot pin 7, and between which a securing projection 10, which is fixedly connected to the transmission housing 9, projects when the emergency release lever 3 is in the normal position and in the emergency release position. In the installation position of the emergency release lever 3, the securing projection 10 is located outside the area between the two guide projections 15, 16 on the emergency release lever 3.