Motor Vehicle Key Housing Elastic Absorption Design
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Solution Overview
Problem
Existing key housings for motor vehicles can produce unwanted noises and impacts due to the key's degree of freedom of movement, especially during vibrations, which is not effectively addressed by prior designs.
Innovation Solution
Incorporating elastic absorption means within the key housing that comes into contact with the key in the locked position to absorb movements and vibrations, utilizing flexible blades or elastomers to prevent noise and improve key positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the key is rigidly attached to the housing, then the key positioning is secure, but the housing size increases and manufacturing complexity increases
Solution Approach 1:
The patent applies beforehand cushioning by incorporating elastic absorption means (such as elastomers or flexible blades) that are pre-positioned within the housing to absorb key movements and vibrations before they can cause noise or damage. This allows the key to be securely positioned without requiring excessive housing volume for rigid constraints.
2Stability of the object's composition
If the key is rigidly attached to the housing, then the key positioning is secure, but the device complexity increases
Solution Approach 1:
The patent applies parameter changes by transitioning from rigid mechanical constraints to elastic deformation-based constraints. The elastic absorption means change their physical state (deformation) to absorb key movements, simplifying the overall housing structure while maintaining secure key positioning.
3Volume of stationary object
If the key has freedom of movement in the housing, then the housing size is reduced and manufacturing is simplified, but unwanted noises and impacts occur during vibration
Solution Approach 1:
The patent applies blessing in disguise by converting the harmful vibrations and movements of the key into beneficial elastic deformation of the absorption means. The elastic materials absorb the energy that would otherwise cause noise and impacts, transforming a potential problem into a solution.
4Device complexity
If the key has freedom of movement in the housing, then the housing structure is simplified, but the key may bang against the housing during vibration
Solution Approach 1:
The patent applies intermediary by introducing elastic absorption means as a mediator between the key and the housing. This intermediary layer absorbs the impacts and vibrations, preventing direct contact between the key and housing while maintaining a simplified overall structure.
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 elastic absorption means effectively reduces unwanted noise and impacts by absorbing key movements and vibrations, enhancing the key's secure positioning and reducing cosmetic play between the key head and housing.
Implementation Method 1
the at least one elastic absorption means is deformed by the insert when the key is in the locked position
Data Source
AI summary
The present invention concerns a key housing, in particular for a motor vehicle key, comprising: —a key (1) comprising an insert (5) and a key head (3) secured to said insert (5), —a housing (7) comprising an insert housing (9) that is longitudinal in shape, intended to receive an insert (5), and a receiving space (70), said key head (3) forming a cover closing the housing (7) at said receiving space (70), and —complementary reversible securing means carried by the housing (7) and by the key (1), allowing said key (1) to be locked onto and unlocked from the housing (7), the housing (7) comprising at least one elastic absorption means (11, 11′) in contact with the key (1) in the locked position.