| 摘要 |
PROBLEM TO BE SOLVED: To provide a portable key with a joint part of a grip and a key blade that do not fracture even if the key is inserted into a keyhole of a cylinder lock of a fitting lock to make unlock operation.SOLUTION: A portable key comprises a portable-type grip and a key blade that is inserted into a keyhole of a cylinder lock of a fitting lock when the key is used. A key body is set via a movable spindle on a key holder constituting the key blade and a retaining spring member constantly holding the key body at a neutral position is wound around the movable spindle. When the key body protrudes, the key body rotates from the portable-type grip toward a use position approximately orthogonal to an apical surface of the portable-type grip via the key holder. If a load beyond a set torque value for a retention factor of the retaining spring member is added on a joint part of a fix spindle and the key holder when the portable-type grip is rotated and operated, the key body resists a spring force of the retaining spring member and tilts toward either right or left. |
