Bush Assembly Device Weight Reduction via Composite Segmentation
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Solution Overview
Problem
The existing bush assembly devices for vehicle suspensions face challenges in minimizing the thickness of the inner pipe and reducing weight, which can lead to increased weight and cost, while also limiting the design flexibility of the rubber parts.
Innovation Solution
An assembling device comprising a bush unit with an outer and inner pipe, a connection unit with a ring-shaped connection body and coupling protrusions, and a support unit with a circular plate and center plate, where the connection unit is formed of plastic material to reduce weight and the support unit is designed to prevent bush separation, allowing for reduced inner pipe thickness and versatility across different bush types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If the inner pipe thickness is reduced to minimize weight, then the weight decreases, but the structural strength and reliability deteriorate
Solution Approach 1:
The invention uses a composite structure consisting of an inner pipe, elastic insertion body, and outer pipe. The inner pipe provides structural support while the elastic insertion body (rubber material) and outer pipe create a composite assembly that maintains overall strength even with reduced inner pipe thickness. This composite approach allows weight reduction while preserving mechanical properties.
Solution Approach 2:
The bush assembly is divided into multiple functional segments: the inner pipe for structural support, the elastic insertion body for cushioning and connection, and the outer pipe for additional support. This segmentation allows each component to be optimized independently, enabling the inner pipe to be thinner while the other segments compensate for the reduced strength.
2Ease of manufacture
If the inner pipe thickness is reduced, then the manufacturing cost decreases, but the reliability and durability worsen
Solution Approach 1:
By creating a composite structure with multiple materials (metal inner pipe, rubber elastic body, metal outer pipe), the invention achieves reliable performance through material diversity rather than relying on a single thick component. This reduces manufacturing costs by using less material overall while maintaining or improving reliability through the synergistic properties of the composite assembly.
Solution Approach 2:
The elastic insertion body acts as a cushioning element that absorbs stresses and shocks before they reach the inner pipe. This beforehand cushioning protects the reduced-thickness inner pipe from damage, ensuring reliability while allowing cost-effective thinning of the inner pipe.
3Reliability
If a thicker inner pipe is used to ensure strength, then the reliability improves, but the design flexibility of rubber parts deteriorates
Solution Approach 1:
By separating the structural function (inner pipe) from the elastic/connection function (rubber insertion body), the invention allows the rubber part to be designed with greater flexibility for different applications while the inner pipe maintains reliable structural support. The segmentation enables independent optimization of both reliability and design flexibility.
Solution Approach 2:
The invention applies different material properties to different parts: the inner pipe provides localized structural strength where needed, while the rubber insertion body provides localized elasticity and design flexibility. This local quality differentiation allows the rubber part to be more versatile without compromising overall reliability.
Data Source
AI summary
An assembling device for a bush may include: a bush unit mounted on a part; a connection unit of which the inside is locked and fixed to the bush unit; and a support unit coupled to the connection unit, and supporting the bush unit so as to prevent separation of the bush unit.