Metal Shield Cover Rib Reinforcement for Vibration Stress
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Solution Overview
Problem
The existing metal shield covers experience stress concentration and potential cracking due to vibration, as their center of gravity shifts relative to the mounting plates, leading to increased vulnerability in areas not sandwiched between bolts and brackets.
Innovation Solution
Incorporating a rib on the attachment plates, particularly on the side where the center of gravity is located, and a reinforcing wall on the opposing plate, which are formed by bending or curving the metal to enhance structural integrity and distribute stress evenly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If brackets are disposed between the mounting plates and the device to attach the shield cover, then the shield cover can be securely mounted to the device, but the center of gravity shifts relative to the mounting plates causing stress concentration on portions not sandwiched between bolts and brackets
Solution Approach 1:
The patent applies local quality by adding a rib structure specifically to the attachment plate at the location where stress concentration occurs (the portion not sandwiched between bolts and brackets). This localized reinforcement provides additional structural support exactly where needed, improving strength without requiring changes to the overall mounting system or adding unnecessary material throughout the entire component.
2Ease of operation
If the center of gravity is displaced from the imaginary straight line extending through the centers of the two insertion holes, then the shield cover can be attached with brackets, but stress concentrates on the portion of the mounting plate not sandwiched between the bolt and the bracket
Solution Approach 1:
The rib structure is strategically positioned on the attachment plate to provide localized reinforcement at the stress concentration area. This allows the center of gravity to remain displaced for ease of bracket attachment while the rib compensates for the uneven stress distribution by providing additional structural support where the stress is highest.
Data Source
AI summary
A shield cover (1) made of metal is configured to be attached to a device and includes a cover body (10) configured to cover a shield target. Two planar attachment plates (11, 13) protrude from the cover body (10). Bolt insertion holes (11A, 13A) extend through the respective attachment plates (11, 13) in a thickness direction thereof and receive bolts (30) for attaching the shield cover (1) to the device. The attachment plates (11, 13) are configured to be attached to the device with brackets (20) sandwiched between the device and the attachment plates (11, 13). A rib (12) extends up along an edge of at least one of the attachment plates (11, 13) to reinforce a portion of the attachment plate (11, 13) that will not be sandwiched between the bolt (30) and the bracket (20).