Behind the scenes of the big hit! I worked on the "battery contacts" of the first-generation game console.
We would like to introduce a case study on the development of battery contacts undertaken by Kyoei Kanamono Seisakusho. A spring trading company was looking for an OEM manufacturer but could not find a place that could realize the drawings designed by the manufacturer, so they requested our company. What was provided was a spring and the drawings created by the manufacturer's designer; however, the drawings had issues, such as a high likelihood that the fit between the main body part (cover) and the mold of the main body cover would not match due to wear during mass production. 【A Twist in the Design Process】 ■ Resolution of Issues through Preliminary Verification - Minimization of mold friction through prior tolerance adjustments - Increased strength by adding ribs to the hook section - Added catches to the cut-over section *For more details, please refer to the PDF document or feel free to contact us.
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【A Twist in Mass Production】 ■Cost Reduction Proposal - Initially, the design allowed for only 2 pieces, but considering the material yield efficiency, the design was changed to allow for 4 pieces. - For further cost reduction, processing was carried out using a high-speed press machine (300 RPM). *For more details, please refer to the PDF document or feel free to contact us.
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【Development Achievements】 ■ Sales of the spring trading company increased tenfold ■ Cumulative sales volume: 100 million units (3 million units per month) ■ Annual sales increased from 50 million to 500 million *For more details, please refer to the PDF document or feel free to contact us.
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Company information
Our company, Kyoei Kanamono Seisakusho Co., Ltd., does not own a factory. In the past, we had a full set of equipment for manufacturing press machines and molds, and we also had employee dormitories and a baseball team. However, as the times changed and in response to further demands from our customers, we began to face many issues, such as opportunity losses due to limitations of in-house equipment, and even if we introduced automation equipment, it took time to master that equipment and costs became high. In light of this, we have transitioned to a system where we collaborate with partner factories that specialize in each process to propose optimal quality and cost to our customers. (There are many factories specializing in parts processing around us and in nearby Higashi-Osaka.) Thanks to this, we have been able to focus on more complex and advanced product development, receiving high praise from many major manufacturers and partner companies. Moving forward, we will continue to pursue satisfying proposals that add a twist to a more competitive society, striving to realize a manufacturing industry that thrives together.