Vehicle Engine Mount with Interlocking Protrusions and Grooves
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Solution Overview
Problem
Existing engine mounts are vulnerable to external shocks, prone to separation and corrosion due to gaps that allow moisture and pollutants to enter, and have complex assembly structures.
Innovation Solution
The engine mount design incorporates protrusions and insertion grooves on the inner case and housing for secure assembly, a curling portion with a support prominence to prevent separation, and a vulcanized integral diaphragm with a ring plate to prevent water and pollutant entry, simplifying assembly and enhancing durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a hook-shaped curling portion is used to assemble the bracket and housing, then the assembly structure is simplified, but the engine mount becomes vulnerable to external shocks and prone to separation
Solution Approach 1:
The connection structure is divided into multiple functional elements: the curling portion provides initial positioning and simplified assembly, while the protrusions and insertion grooves provide additional mechanical interlocking. This segmentation allows each element to perform its specific function optimally without compromising overall reliability.
Solution Approach 2:
The protrusions are pre-formed on the inner case and the insertion grooves are pre-formed on the housing before assembly. This preliminary preparation ensures that when the bracket is installed, the protrusions automatically align with and engage the insertion grooves, providing immediate shock resistance without requiring complex assembly procedures.
2Ease of manufacture
If a small gap exists in the curling portion for assembly, then the assembly process is simplified, but moisture and pollutants can enter causing corrosion
Solution Approach 1:
The protrusions fit into the insertion grooves in a nested manner, creating an interlocking structure that eliminates gaps. The inner case with protrusions is nested within the housing that has insertion grooves, forming a tight seal that prevents moisture and pollutant ingress while maintaining assembly simplicity.
Solution Approach 2:
The protrusions and insertion grooves act as intermediary elements between the inner case and housing. These intermediaries create a mechanical interlock that simultaneously achieves simple assembly and prevents gap formation, thereby blocking the pathway for moisture and pollutants.
3Reliability
If multiple fitting devices and cocking portions are used to secure the bracket, then resistance to external shock is improved, but the assembly structure becomes complicated
Solution Approach 1:
The functions of multiple fitting devices and cocking portions are merged into a single integrated structure of protrusions and insertion grooves. This unified design provides equivalent or superior shock resistance while significantly simplifying the assembly structure by eliminating the need for separate fitting devices and multiple cocking portions.
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 design firmly fixes the engine mount against external shocks, prevents corrosion, and simplifies assembly, thereby improving durability and productivity.
Implementation Method 1
high-frequency vibration with small amplitude or large amplitude which is generated while a vehicle travels is transmitted to the engine mount and fluid in the engine mount repeatedly flows up and down therein by contraction and restoration of a main rubber body disposed in the engine mount, such that the vibration energy of the engine is reduced
Implementation Method 2
at least one or more protrusions are formed on the outer circumference of the inner case, at least one or more insertion grooves where the protrusions are inserted are formed in the housing, and the protrusions of the inner case are inserted in the insertion grooves of the housing to improve strength and durability
Implementation Method 3
a hook-shaped curling portion 1a is formed at the lower portion of the housing 1, such that the end of the body 6 and the engine mount are combined with a car body frame (not shown) inside the curling portion 1a and a bracket 5 with a locking prominence at the end is inserted therein
Data Source
AI summary
An engine mount of a vehicle may include a main rubber body defining a main liquid chamber, wherein a fastening bolt for assembling a vehicle engine is coupled to the main rubber body, an inner case supporting the main rubber body, and a housing enclosing the main rubber and the inner case, wherein at least a protrusion is formed on an outer circumference of the inner case, and wherein at least a groove is formed in the housing and the at least a protrusion of the inner case is coupled to the corresponding at least a groove of the housing.