Silent Block Fixing Rivet for Vibration Damping
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Solution Overview
Problem
Existing fixing devices for functional members in land transport vehicles, such as compressors, often disturb the performance of silent blocks due to their attachment methods, leading to inadequate damping of vibrations and shocks.
Innovation Solution
A fixing device comprising a fixing rivet with a male inner part and a female outer part, featuring movable wings and counter-support elements, which allows for radial and longitudinal movement of the silent block, ensuring effective damping while maintaining easy assembly and economic feasibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the silent block is fixed rigidly to the support by conventional methods (screws, plastic rivets, or rods), then the functional component is securely attached to the support, but the damping performance of the silent block is disturbed and vibrations and shocks are not effectively dampened
Solution Approach 1:
The fixing rivet is divided into two distinct parts: an internal male part that provides secure anchoring to the support, and an external female part that interfaces with the silent block. This segmentation allows the male part to ensure reliable attachment while the female part maintains freedom of movement for optimal damping performance.
Solution Approach 2:
The external female part of the fixing rivet is designed with movable wings that can shift position, and the silent block is configured to move freely within the receiving area. This dynamic design allows the silent block to adapt its position in response to vibrations and shocks, maintaining effective damping while remaining securely attached.
2Ease of manufacture
If conventional fixing methods are used, then the assembly process is simple and economical, but the silent block's ability to absorb vibrations and shocks is compromised
Solution Approach 1:
The fixing rivet incorporates self-locking features through its male and female parts that automatically secure the silent block to the support without requiring additional fastening operations. The design enables easy assembly while maintaining the silent block's freedom to move and absorb shocks effectively.
3Stability of the object's composition
If the silent block is constrained by conventional fixing devices, then the attachment is stable and secure, but the amortization performance of the silent block is reduced
Solution Approach 1:
The fixing rivet applies different characteristics to different parts: the internal male part provides stable, fixed anchoring to the support, while the external female part allows controlled movement and flexibility for the silent block. This local differentiation ensures both attachment stability and sustained amortization performance.
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 provides excellent damping performance by allowing the silent block to move freely radially and longitudinally, minimizing disturbance and enhancing the absorption of vibrations, shocks, and noise between the functional member and the support.
Implementation Method 1
a silent block coupled to the fixing rivet and defining a receiving and retaining area adapted to receive and retain a part of the functional component... with the silent block damping shocks and vibrations between the compressor and the support
Implementation Method 2
The silent block is free to move longitudinally relative to the female outer part of the fixing rivet... The silent block is free to move radially relative to the female outer part of the fixing rivet
Data Source
Figure 1~2
AI summary
A device for attaching a functional component (100) to a support (200) consists of a fixing rivet (10) adapted to be fixed in a mounting hole provided in the support (200) and a silent block (50) coupled to the fixing rivet (10) and defining a receiving and retaining area adapted to receive and retain a portion of the functional component (100). The fixing rivet (10), consisting of a female outer part (14) and a male inner part slidably mounted within the female part (14), includes locking elements (20) that fit into a through-hole in the silent block (50) and cooperate with the silent block (50) so as to provide a fixed connection between the silent block (50) and the female outer part (14) of the fixing rivet (10).The resulting fixed connection is located in the lower part of the female outer part (14) of the fixing rivet (10) and ensures a locking of the silent block (50) radially and longitudinally relative to the female outer part (14) of the fixing rivet (10).