| 摘要 |
A gear structure of servo has a control body, a casing and a reduction gear set. The control body has a driving motor. The casing is mounted and covered on the control body and has a receiving space formed between the casing and the control body. The reduction gear set is mounted in the receiving space and has a first gear unit, a second gear unit, a third gear unit and a fourth gear unit. Each one of the gear units engages a corresponding gear unit. Helical gears are used in the reduction gear set, so the abrasion and noises caused by the engagements between the gear units can be reduced via the helical gears, and promote the transmitting efficiency of the driving motor. |
| 主权项 |
1. A gear structure of servo comprising:
a control body having
a shell; anda driving motor mounted in the shell and having
a driving gear wheel mounted on a top of the driving motor and extending out of a top of the shell; a casing mounted on a top of the control body and having a receiving space formed in the casing; and a reduction gear set mounted on the top of the shell, mounted in the receiving space of the casing, and having
a first gear unit rotatably mounted in the casing, engaging the driving gear wheel of the driving motor, and having
a passive gear wheel rotatably mounted on the top of the shell and engaging the driving gear wheel; andan active gear wheel formed on a top of the passive gear wheel;a second gear unit rotatably mounted on the shell of the control body, engaging the first gear unit, and havinga passive gear wheel rotatably mounted on the shell and engaging the active gear wheel of the first gear unit; and
an active gear wheel being a helical gear and securely mounted on the passive gear wheel of the second gear unit;a third gear unit rotatably mounted on the shell of the control body above the first gear unit, engaging the second gear unit, and having
an active gear wheel being a helical gear and abutting the active gear wheel of the first gear unit; anda passive gear wheel being a helical gear, mounted on a top of the active gear wheel of the third gear unit, and engaging the active gear wheel of the second gear unit; anda fourth gear unit rotatably mounted on the shell of the control body, engaging the third gear unit, and having
a passive gear wheel being a helical gear and engaging the active gear wheel of the third gear unit. |
