We developed a constant force spring in 1952 and announced it under the name of CONSTON®, derived from its characteristics (constant force spring). Its unique properties quickly attracted attention from various industries and it became adopted in various products.
At present, CONSTON has gained an undisputed reputation as a constant force spring, and it is widely and commonly used and highly evaluated all over the world. Today, CONSTONs are used in a wide range of fields, from stationery to home appliances, housing equipment, automobiles, medical equipment, semiconductor devices, construction machinery, ships, and satellites.
We offer many standard products so that customers can easily enjoy the effects of CONSTON. We do not only manufacture springs, but also establishes the design, development, and research departments for those mechanisms and devices that use springs to meet a wide variety of customer needs.
Springs are effective also in reducing the environmental burden, which has been a global issue, and have the potential to play a role as a power source for energy saving that will replace electricity, gas, oil, etc.
Our basic stance is to go one step further beyond the previous concept that “springs are parts”, promote unitization of springs that can work immediately by screwing, and design and manufacture them from the standpoint of customers. We will continue to work in collaboration with our customers to develop new components and products.
CONSTON® and コンストン® are registered trademarks of Sunco Spring Co., Ltd.