| 摘要 |
<p>PURPOSE: To provide a cover hinge structure in a cartridge for operation recorder in which opening/closing of a cover can be regulated with respect to a housing through the frictional force produced between the hinge and the inner circumferential face part by a structure wherein a part protruding from a spring member of the hinge, provided for any one of the housing or the cover, comes into resilient contact with the inner circumferential face part provided for the other of the housing or the cover. CONSTITUTION: While mounting a spring holding part 17 and a spring member 19 provided at the hinge 15 of a cover 13, a protrusion 19d of the member 19 is projected outward from the flange part 18 of the holding part 17 thus abutting the protrusion 19d resiliently against the inner circumferential face part of a hinge receiving groove facing the flange part 18. When the cover 13 is opened or closed in order to contain a recording paper 21 in a recording paper containing section 12b, to taken out the recording paper 21 therefrom, or to replace the recording paper 21, rotation of the cover 13 in the closing direction due to its self weight is regulated by the frictional force between the protrusion 19d and the inner circumferential face part or between the outer circumferential face of a shaft 15A and the inner circumferential face of a shaft hole 15a. Consequently, the cover 13 can be held open at an arbitrary angle.</p> |
