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EV Trend Now Sweeps into Japanese Fastener R&D Market
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2021-11-26
     Poised to take over Tesla, the newcomer Lucid emerged as a surprise and topped the market with its title for creating a battery of 520 mileage. The EV trend is sweeping the Japanese components manufacturers like a tsunami and it doesn't exclude fastener-related companies.
 
     The white-hot EV market has forced a change in Japanese fasteners. While a fuel vehicle uses 30,000 components, an EV only requires half of the total amount. To reduce power consumption, EVs must be lightweight to reduce vehicle weight, which means manufacturers must use lightweight resin instead of iron as the material for automotive components.
 
     The same lightweight requirement goes for fasteners. Each 0.5 grams saved on a single screw will reduce over 1 kilogram for an EV's total weight. Currently there are some Japanese fastener manufacturers who have developed aluminum screws weighing one-third of iron screws. With nearly the same contractibility as resin when exposed to heat, aluminum screws work well with resin automotive components. Some Japanese manufacturers have even developed CFRP fasteners. Additionally, some have developed titanium screws for use on EVs that can rebound like a spring and hence are resistant to vibration and loosening, but the problem lies in the cost which is 30 times higher than iron screws as well as the difficulty in processing titanium screws.
 
     Besides screws, screwdrivers will have to be re-designed to drive screws into small electronic components on EVs. EVs require fastening fasteners in a very confined space and therefore a combination of fastening screws with adhesives and thermal welding emerges on the market to prevent screws from loosening.
電動車
日本扣件
鋁螺絲
EV
Japanese fasteners
aluminum screws
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