| Summary: | 碩士 === 龍華科技大學 === 機械工程系碩士班 === 107 === The self-close mechanism is a key component of the drawer. The research main purpose is discussing the self-close mechanism of heavy-duty refrigerator slides.
This mechanism is subjected to impact, causing damage to parts such as the body and plastic, resulting in the drawer slides being unable to be used normally. This paper discusses the self close mechanism of heavy-duty refrigerator slides, using different materials, including: sample 1 (polyoxymethylene POM Mitsubishi-F20), sample 2 (synthetic fiber Nylon 6) and sample 3 (polyoxymethylene POM Mitsubishi-FU2025), for self-close mechanism lifetime influence of heavy-duty slides. Experiments have shown the result as below: Sample 1: Impact test, the material can not pass the impact of the weight of 4.0 kgs, resulting in broken. Sample 2: Impact test, the material can not pass the impact test of the weight of 8.0 kgs, resulting is deformed. Sample 3: Impact test, the weight of 11.0 kgs. Although the material did not immediately break and deform but placed the plastic after 24 hours, the material has partial deformations, as "reset function" and " Anti-destruction design."
In order to improve the easy deformation of the self-close mechanism, "reset function" and "anti-destruction design". Using sample 3 as the material of the mechanism, and use the rib to strengthen the "reset function" part of the self-close mechanism. This process will not let plastic to easily deformed. As the anti-destruction design, it is easy to make the self-close mechanism invalid due to the mistake of the middle member of the slides. The improvement will shorten the cantilever 2.78mm to 2.21mm. After the improvement, the "anti-destruction design" will not easily deformation. Through 20 pairs sample test and placed for 24 hours, the plastic body has no deformation. The mechanism is stronger more than before and gets great sales in the market.
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