 Features & function: This spring is made for convex form through heat-treatment process. When hold both ends of spring by finger and press it toward center position, it will be bent toward inside of convex form and when release it from finger, it returns to original straight convex form. By utilizing this force of restitution, convex springs are widely being used for small bags, etc.. |
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Typical applications: Coin purse, Spectacle case, Portable ash tray |
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 Features & function: This spring has same form as shown on above but, when hit the surface slightly by finger, it becomes round form like bracelet. Usually this spring is covered by soft material like cloth or elastic plastic and is being used to hold something by winding it. It is easy to put on or take out and easy for hand-carry. So, this spring can be designed and developed for various kinds of gift and sales promotion items. OEM production of final goods are also welcome. The following photo is showing that this convex spring has I.D. 10mm when make it round. We have suceeded in making I.D. so small by our own technique and special thin size of material. |
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 Convex spring with I.D. 10mm |
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Typical applications: 1) For toy use, press this spring onto wrist and then, spring will change to bracelet. Some characters or watches are being put on together for higher value. 2) To hold the bottom of trousers to avoid being caught in bicycle chain. 3) To hold the bundle of electric cords, strings, etc. by this spring very easily. It is also quite easy to take out spring. |
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