| 摘要 |
The present invention relates to an operation device using a seesaw motion having a novel structure, wherein a weight is injected if one end of a seesaw apparatus reaches an ascending position by gravity and the weight is discharged if the one end reaches a lower position, thereby enabling continuous ascending and descending motion. Thus, it is possible to work outside using the energy obtained by the falling weight in conjunction with the seesaw motion. |
