| 摘要 |
In a tape recorder, a tape tensioning device for tensioning the tape in a tape cassette comprises a movable member for causing a tension detection switch to open when the movable member is moved in a first direction, and a gear mechanism composed of first and second gears and a tensioning gear meshable with the first and second gears upon movement of the member in a second direction, to rotate one reel spindle. The tensioning gear is movable about the first gear upon inhibition of rotation of the spindle. The device further includes a brake for inhibiting rotation of the other spindle, and a retaining mechanism responsive to movement of the gear for further moving the member in the first direction to retain the member in such a position that the gear is moved away from the first and/or second gears, to release the other spindle from the brake mechanism and to return the member to the second direction upon unloading of a tape cassette.
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