Patent ID: 11867261
Assignee: GLOBE (JIANGSU) CO. LTD.
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F  A  E  H | IPC E  F

Claim 0:
1. An electric drill, comprising a motor, a transmission mechanism, and a drill rod assembled on an output shaft of the transmission mechanism, the transmission mechanism comprising:
a primary planet carrier having a plurality of primary planetary gear shafts arranged at one end thereof and a sun gear arranged at the other end thereof;
a primary gear assembly comprising a primary gear ring and a primary gear set located in the primary gear ring;
a secondary planet carrier comprising a plurality of secondary planetary gear shafts arranged at one end thereof and an output shaft of the secondary planet carrier arranged at the other end thereof; and
a secondary gear assembly comprising a secondary gear ring and a secondary planetary gear set located in the secondary gear ring;
wherein, the primary gear set comprises at least two primary planetary gear sets; the at least two primary planetary gear sets are pivotably mounted on the primary planetary gear shafts, an outer side of the primary planetary gear set engages with the primary gear ring, and an inner side of the primary planetary gear set engages with a central gear arranged on a motor output shaft;
wherein, the secondary planetary gear set is pivotably mounted on the secondary planetary gear shafts, an outer side of the secondary planetary gear set engages with the secondary gear ring, and an inner side of the secondary planetary gear set engages with the sun gear.