| 摘要 |
PURPOSE: A card type key case set is provided to simplify the carrying of keys, and consequently to prevent the loss of the keys. CONSTITUTION: The card type key case set is comprised of a main case(1), a door(2), a key holding part(3), and a key fastening device(4). The main case and the door are made of same material. The size of the main case and the door are same with the size of a credit card or a business card. Also, the card type key case set is formed so that the thickness thereof is minimized in a state that the door is closed. Therefore, the card type key case set is able to be received in a wallet and so on. The key holding part and the key fastening device used to fasten a key(5) to the case are formed to allow the door to be closed even during the use of the key such as a car key.
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