Bracket-equipped Vibration-damping Device Assembly
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Solution Overview
Problem
Existing vibration-damping devices face challenges in applying vertical pre-compression and sealing fluid chambers efficiently, leading to increased manufacturing complexity and steps, especially when using fluid-filled structures.
Innovation Solution
A bracket-equipped vibration-damping device design that allows vertical compression of the main rubber elastic body and fluid chamber sealing through a guide groove and compression wall surface arrangement, enabling insertion without prior compression and separate application of vertical forces, with optional features like swage pins and covering rubber for enhanced stability and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If vertical pre-compression is applied to the elastomer body during assembly, then durability of the vibration-damping device is improved, but manufacturing complexity increases due to difficulty in applying compression force during insertion
Solution Approach 1:
The bracket is pre-assembled with the vibration-damping element before mounting to the vehicle. The elastomer body is compressed between the first strength member and the bracket during this preliminary assembly step, so that pre-compression is achieved without requiring complex compression mechanisms during final installation. This separates the pre-compression operation from the main assembly process, simplifying manufacturing.
Solution Approach 2:
The bracket serves as an intermediary component that facilitates pre-compression of the elastomer body. By positioning the bracket between the first strength member and the second strength member, and compressing the elastomer during bracket assembly, the system achieves pre-compression through a simple intermediate step rather than requiring complex force application mechanisms during main assembly.
2Reliability
If sealing is performed before attaching the support to the vibration-damping element, then fluidtightness is secured, but the number of manufacturing steps increases
Solution Approach 1:
The sealing operation is merged with the bracket assembly process. The seal body is positioned and compressed during the same preliminary assembly step where the bracket is attached to the vibration-damping element. This combines sealing and bracket attachment into a single manufacturing operation, reducing the total number of steps while ensuring fluidtightness.
Solution Approach 2:
Sealing is performed as a preliminary action during bracket assembly, before the final mounting of the vibration-damping device. The seal body is compressed between components during this early stage, ensuring fluidtightness is established before subsequent assembly operations. This eliminates the need for separate sealing steps after support attachment.
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
Facilitates easier assembly by eliminating the need for pre-compression steps, ensures efficient fluidtightness, and improves durability of the rubber elastic body, while maintaining target vibration-damping performance and reliability.
Implementation Method 1
a main rubber elastic body elastically connecting the first mounting member and the second mounting member to each other
Implementation Method 2
vibration-damping device which is applicable as an engine mount of an automobile or the like
Data Source
AI summary
A bracket-equipped vibration-damping device including: a vibration-damping device main unit including first and second mounting members disposed separately from each other vertically and connected by a main rubber elastic body mutually and elastically; and a bracket mounted to the device main unit in a state that the bracket is fixed to the second mounting member inserted into the bracket laterally. A guide part of the second mounting member is inserted into a guide groove of the bracket extending in an insertion direction to be positioned vertically. The bracket includes a compression wall surface superposed to at least one of upper and lower end surfaces of the device main unit. A groove width inner surface of the guide groove opposite vertically to the compression wall surface is tilted to the compression wall surface so that the surfaces approach each other vertically toward the insertion direction.