| 摘要 |
A tank cap with a lock of a fuel tank comprises: a gasket member (2) for sealing a fuel supply port of the fuel tank; an locking member (3) arranged in a periphery of the fuel supply port; and a slider (4) arranged between the gasket member and the locking member. The slider (4) moves in conjunction with the gasket member, in such a manner that the locking member is prevented from moving in the transverse direction when the gasket member moves in a closing direction in which the gasket member comes close to the locking member, that the locking member is capable of moving in the transverse direction when the gasket member moves in a separating direction in which the gasket member is separate from the locking member, and that the locking member is maintained in a maintaining state in which the stopper is kept intruded into the moving passage of the locking member, even if the gasket member moves in the separating direction, when the locking member is prevented from moving in the transverse direction. In addition to this, for example, a temporary assembling cap (102) is incorporated between the outer circumference of the gasket member and the outer circumference of the locking member of the tank cap with a lock. Therefore, the tank cap with a lock can be packed while the key is withdrawn from the tank cap.
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