Engine Mount Filter Spacer Locking Without Snap Rings
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Solution Overview
Problem
The existing filtering devices for motor vehicles require significant assembly time and are costly due to the use of snap rings or elastic rings for axial locking, which can be easily misplaced and are expensive.
Innovation Solution
The proposed filtration device uses locking fingers with a hook-like design that are elastically deformable to secure the spacer to the core, eliminating the need for additional locking elements like snap rings or elastic rings, thereby simplifying assembly and reducing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an elastic ring or snap ring is used to axially lock the spacer onto the core, then the spacer is securely locked in position, but the assembly time increases and the cost increases
Solution Approach 1:
The invention extracts and eliminates the separate elastic ring or snap ring component from the locking mechanism. Instead of using an additional locking element, the spacer itself is designed with integrated locking features (such as deformable portions or elastic elements) that directly engage with the core, thereby removing the need for separate locking rings and reducing assembly steps
Solution Approach 2:
The locking function is merged with the spacer structure itself. The spacer incorporates locking features (deformable portions, elastic elements, or integrated locking mechanisms) that combine the spacing function and locking function into a single component, eliminating the need for separate locking rings and reducing the number of parts
2Reliability
If an elastic ring or snap ring is used to axially lock the spacer onto the core, then the spacer is securely locked in position, but the cost increases
Solution Approach 1:
The invention extracts and eliminates the separate elastic ring or snap ring component from the locking mechanism. Instead of using an additional locking element, the spacer itself is designed with integrated locking features (such as deformable portions or elastic elements) that directly engage with the core, thereby removing the need for separate locking rings and reducing assembly steps
Solution Approach 2:
The locking function is merged with the spacer structure itself. The spacer incorporates locking features (deformable portions, elastic elements, or integrated locking mechanisms) that combine the spacing function and locking function into a single component, eliminating the need for separate locking rings and reducing the number of parts
3Reliability
If an elastic ring or snap ring is used to axially lock the spacer onto the core, then the spacer is securely locked in position, but the complexity of assembly increases due to the risk of misplacement
Solution Approach 1:
The invention extracts and eliminates the separate elastic ring or snap ring component from the locking mechanism. Instead of using an additional locking element, the spacer itself is designed with integrated locking features (such as deformable portions or elastic elements) that directly engage with the core, thereby removing the need for separate locking rings and reducing assembly steps
Solution Approach 2:
The spacer performs its own locking function through integrated locking features. The deformable portions or elastic elements of the spacer automatically engage with the core to secure the assembly, eliminating the need for separate locking rings and reducing assembly steps while ensuring reliable locking
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
This solution reduces assembly time, minimizes material costs, and enhances the mechanical resistance of the locking mechanism, providing a more efficient and cost-effective vibration filtering system for motor vehicles.
Implementation Method 1
a first locking finger (74) of said first set of locking fingers extending axially from said inner ring (52) of said first spacer (20) and being elastically deformable along a radial direction, between a locked position, towards which said first locking finger (74) is elastically recalled, and a released position
Data Source
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AI summary
The invention relates to a device (14) for vibration filtering and for supporting a motor vehicle engine, comprising at least one bearing (16), a core (18) extending along a central axis (A) and delimited by a peripheral face (84), and a first filtering spacer (20) interposed between the bearing (16) and the core (18) and slidably mounted from back to front on the core (18) along the main axis (A), between an initial disassembled position and a final operating position in which the first spacer (20) is locked onto the core (18), characterized in that the peripheral face (84) of the core (18) delimits at least one first housing (82) and in that the first spacer (20) comprises at least one inner ring (52) equipped with at least one locking finger (74) having a lug (76) and being deformable elastically along a radial direction,between a retracted position in which the locking finger (74) is disengaged from the first associated housing (82) to allow axial sliding of the first spacer (20) on the core (18), along the central axis (A), and a locking position in which said lug (76) of the locking finger (74) cooperates with said first associated housing (82) to axially lock the first spacer (20) onto the core (18).