| 摘要 |
The present invention relates to a one-way sprocket installed in a drive motor of an automatic hose reel device, which: delivers power as latches are caught by a drum housing when a hose is wound; and enables the sprocket to idle as the latches are retracted when the hose is released. The present invention comprises: a rotation body (110) which is formed with a shaft tube (112) of being combined with a drive motor (2) by an axial bond, a rotation disk (114) of being combined with the shaft tube (112) by the axial bond, and multiple latches (116) of being installed in the rotation disk (114); a drum housing (120) which has latch grooves (124) at which the latches (116) of the rotation disk (114) are caught and has a sprocket (126) where a chain (4) is connected to deliver power to a drum shaft (3) on which the hose is surrounded; and a press disk (130) which has multiple contact protrusions (132) formed at positions corresponding to the latches (116) of the rotation body (110). Accordingly, the rotation disk (114) is caught by the latch grooves (124) of the drum housing (120) by rotating the latches (116) toward the outside when the rotation disk (114) rotates in one direction (driving direction). And the rotation disk (114) becomes in an idle state as the contact protrusions (132) are separated from the latches (116) and the latches (116) are separated from the latch grooves (124) of the drum housing (120) when the rotation disk (114) rotates in a reverse direction. |
