Anti-Vibration Bracket Structure for Lower Weight and Higher Durability
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Solution Overview
Problem
Conventional anti-vibration device brackets face challenges in achieving both weight reduction and durability improvement simultaneously, with existing designs often compromising on one aspect at the expense of the other.
Innovation Solution
A bracket design featuring a synthetic resin body with a fiber-reinforced plastic reinforcement member, where the reinforcement member is arranged in an I-shaped cross-section configuration with a narrower connecting portion, ensuring a balanced strength distribution between the outer and inner circumferences, and incorporating features like convex surfaces and ribs to enhance durability and reduce weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a reinforcement member made of fiber reinforced plastic is fixed to the outer circumference of the surrounding portion, then durability is improved, but weight reduction is limited
Solution Approach 1:
The patent applies local quality by creating an I-shaped cross-section in the reinforcement member arrangement portion, where the connecting portion has a narrower cross-sectional width than the outer and inner circumferences. This localized thinning reduces material usage and weight while maintaining structural integrity through strategic reinforcement placement.
Solution Approach 2:
The patent utilizes composite materials by combining a synthetic resin bracket body with a fiber reinforced plastic reinforcement member. This composite structure achieves both weight reduction from the resin and durability enhancement from the fiber reinforcement, resolving the contradiction between weight and strength.
2Weight of stationary object
If the cross sectional width of the inner circumference is narrowed, then weight is reduced, but structural strength may be compromised
Solution Approach 1:
The I-shaped cross-section design applies local quality by concentrating material at the outer circumference and inner circumference while reducing material in the connecting portion. This creates optimal strength distribution where material is placed only where structurally necessary, maintaining strength while minimizing weight.
Solution Approach 2:
The reinforcement member is pre-positioned within the I-shaped cross-section structure during manufacturing, ensuring that the narrowed connecting portion still achieves required strength through the embedded fiber reinforcement before the product is put into service.
3Weight of stationary object
If the connecting portion cross sectional width is made narrower than outer and inner circumferences, then weight is reduced, but stress concentration may increase
Solution Approach 1:
The I-shaped cross-section applies local quality by strategically positioning the reinforcement member within the narrowed connecting portion. The fiber reinforced plastic is concentrated in this critical area to compensate for the reduced cross-sectional width, maintaining stress distribution while minimizing overall weight.
Solution Approach 2:
The composite material structure allows the connecting portion to achieve adequate strength despite narrow dimensions, as the fiber reinforcement provides enhanced tensile and flexural properties that compensate for the reduced geometric cross-section, preventing stress concentration issues.
Data Source
AI summary
A bracket (1) includes a bracket body (2) made of a synthetic resin and a reinforcement member (3) made of a fiber reinforced plastic. The bracket body (2) has a surrounding portion (20). The reinforcement member (3) extends in a surrounding direction. A reinforcement member arrangement portion (20a) of the surrounding portion (20) is formed of an outer circumference (211), an inner circumference (212), and a connecting portion (213). The reinforcement member arrangement portion (20a) is in the shape of a letter I in cross section in which the cross sectional width (W3) of the connecting portion (213) is narrower than the cross sectional width (W1) of the outer circumference (211) and the cross sectional width (W2) of the inner circumference (212). The reinforcement member (3) is arranged on the outer circumference (211).