Transmission Mount Stopper Fixing Structure
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Solution Overview
Problem
Conventional transmission mounts with stoppers fail to effectively control lateral movement of the powertrain during sharp turns, leading to reduced steering performance and potential noise issues due to the stopper's limited durability and inability to manage loads in the width direction.
Innovation Solution
A transmission mount structure featuring a housing bracket with stopper-fixing holes and an inner steel member that securely fixes the stopper, allowing it to contact the transmission bracket during turns and suppress powertrain movement, while the inner steel member's curved protruding portions control vertical movement and prevent excessive deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional stopper is used that only controls downward movement of the core, then the insulator is protected from excessive vertical deformation, but the powertrain cannot be controlled in the lateral direction during sharp turns, reducing steering performance
Solution Approach 1:
The stopper is extended from a single downward-protruding rib to multiple ribs protruding in different directions (upward, leftward, rightward). This dimensional expansion allows the stopper to control powertrain movement not only vertically but also laterally during sharp turns, simultaneously improving insulator durability and steering performance.
Solution Approach 2:
The stopper is designed with multiple ribs serving different functions: the upward rib prevents excessive upward movement, the leftward and rightward ribs control lateral movement during turns. This multi-functional design allows a single component to address both vertical protection and lateral control requirements.
2Ease of operation
If a separate stopper is bonded to the external portion of the transmission mount to control powertrain displacement during steering, then steering responsiveness is improved, but the bonding portion is weakened by frequent turning, deteriorating robustness
Solution Approach 1:
The stopper is integrated with the insulator as a single integral component rather than being a separate bonded part. This eliminates the bonding interface that would be weakened by frequent turning, while still providing the necessary lateral control function during steering operations.
Solution Approach 2:
The stopper acts as an intermediary element between the insulator and the powertrain bracket, providing mechanical contact and control without requiring adhesive bonding. This direct mechanical connection maintains robustness while enabling steering control.
3Device complexity
If the stopper is not securely fixed to the housing, then the structure remains simple, but the stopper may separate or produce noise during operation
Solution Approach 1:
The stopper is nested within the housing structure, with its root portion inserted into the housing cavity and secured from the interior side. This nested configuration provides secure fixation while maintaining a compact and simple overall structure.
Solution Approach 2:
The stopper is divided into distinct functional segments: the root portion for secure attachment to the housing, the body portion forming the lateral surfaces, and the multiple ribs for different directional control. This segmentation allows each part to be optimized for its specific function while maintaining structural simplicity.
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 securely fixes the stopper, prevents noise and separation, enhances steering performance by suppressing powertrain movement, and effectively controls vertical movement, thereby improving the overall stability and responsiveness of the vehicle during turns.
Implementation Method 1
isolates vibrations of the powertrain owing to elastic deformation of the insulator 5
Implementation Method 2
The stopper 7 has a rib 7a, which protrudes upwards from the lower side thereof in order to prevent the core 6 from moving downwards at a predetermined distance or more, thereby suppressing excessive elastic deformation of the insulator 5
Data Source
AI summary
A transmission mount installed in a vehicle body in order to support the weight of a transmission includes a housing bracket including a housing having stopper-fixing holes and stopper-position-fixing portions, a stopper having insertion-protruding portions formed so as to be inserted into the stopper-position-fixing portions, fixing pieces formed so as to be inserted into the stopper-fixing holes and curled, and fixing holes formed near the fixing pieces, and an inner steel member having protruding pieces formed so as to be inserted into the fixing holes formed in the stopper. The stopper contacts a transmission bracket of a powertrain when a transmission of the powertrain is biased to the left in response to a right turn of a vehicle, thereby suppressing movement of the powertrain and further improving steering performance.