Manual Parking Release Mechanism With Bullet Lock Retention
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional devices for releasing a parking state in vehicles, especially electric vehicles, face challenges due to high weight, inability to maintain the released state, damage to transmission gears from excessive torque, and high costs and installation limitations of electronic actuators, leading to inconvenient and unreliable manual release methods.
Innovation Solution
A manual parking state release device with a first cable, first and second frames, and a bullet mechanism that allows for stable manual release and maintenance of the parking state through controlled rotation and fixation of the frames using a groove and bullet system, reducing manipulation load and preventing unintentional rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional lever type handle is used to release the parking state, then the structure is simple, but the high weight of electric vehicles causes the parking state to cannot be released or may not maintain the released state
Solution Approach 1:
The patent implements a dynamic two-stage rotational mechanism where the second frame rotates in a first direction during operation and in a second direction during return, with the bullet dynamically moving between different positions within the groove to provide temporary and fixed fixing at appropriate stages. This dynamic adaptation allows the mechanism to effectively release the parking state despite the high weight of electric vehicles.
2Reliability
If a separate tool is used to release the parking state, then the parking state can be released, but the use of a dedicated tool and one-touch manipulation method are not possible, resulting in repeated operations and excessive torque application
Solution Approach 1:
The patent implements a self-service mechanism where the bullet automatically moves to appropriate positions within the groove based on the rotation direction of the second frame. During operation, the bullet moves to provide temporary fixing and then fixed fixing at the parking release position. During return, it automatically moves back to the initial position. This eliminates the need for separate tools and repeated operations, allowing one-touch manipulation while maintaining reliable parking state release.
3Ease of operation
If the parking state is released using an electronic actuator, then the release can be achieved, but the electronic actuator is expensive and has installation limitations, and the battery is discharged after several operations
Solution Approach 1:
The patent replaces the electronic actuator system with a pure mechanical two-stage rotational mechanism. The mechanism uses the bullet moving within the groove to provide temporary and fixed fixing during rotation, eliminating the need for electronic components, batteries, and complex control systems. This mechanical substitution reduces device complexity and cost while maintaining ease of operation for parking state release.
4Device complexity
If conventional manual release devices are used, then the structure is simple, but they cannot maintain the parking release state due to high vehicle weight, causing vehicles to return to parking state unexpectedly
Solution Approach 1:
The patent implements preliminary action by having the bullet move to the parking release position within the groove before the parking state release is completed. The bullet provides fixed fixing at this position, preliminarily securing the released state. This preliminary securing action ensures that even under high vehicle weight, the parking release state is maintained and unexpected return to parking state is prevented.
Solution Approach 2:
The patent introduces the bullet as an intermediary element within the groove of the second frame. This intermediary provides temporary fixing during rotation and fixed fixing at the parking release position, acting as a mediator between the user's operation and the parking state release. This intermediary mechanism ensures reliable state maintenance without increasing overall device complexity.
Data Source
AI summary
Disclosed is a manual parking state release device. The manual parking state release device according to one aspect of the present invention may include a first cable configured to release a parking state of a transmission, a first frame configured to apply an external force to the first cable while rotating in a first direction so that the parking state of the transmission is released, a second frame configured to rotate the first frame in the first direction while rotating in a second direction when a user's external force is applied, and a bullet configured to prevent the second frame from unintentionally rotating in the first direction so that a parking release state of the transmission is maintained.