US 12,214,667 B2
Power transmission mechanism and liquid ejecting device
Shuhei Matsumura, Shiojiri (JP); Tetsuya Miyagawa, Shiojiri (JP); and Soshi Okawa, Shiojiri (JP)
Assigned to Seiko Epson Corporation, Tokyo (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP)
Filed on Jan. 16, 2024, as Appl. No. 18/414,041.
Claims priority of application No. 2023-005675 (JP), filed on Jan. 18, 2023.
Prior Publication US 2024/0239176 A1, Jul. 18, 2024
Int. Cl. F16H 57/12 (2006.01); B60K 6/36 (2007.10); B65H 79/00 (2006.01); F16H 1/20 (2006.01)
CPC B60K 6/36 (2013.01) [B65H 79/00 (2013.01); F16H 1/20 (2013.01); F16H 57/12 (2013.01); B65H 2403/10 (2013.01); B65H 2403/40 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A power transmission mechanism comprising:
an operation unit;
a drive source configured to generate power for operating the operation unit; and
a gear train mechanism including a plurality of power transmission gears of which rotation centers are arranged in a staggered pattern when viewed from an axial direction and configured to transmit the power by rotating the plurality of power transmission gears, wherein
the gear train mechanism includes a first gear as the power transmission gear located most downstream in a power transmission direction in which the power is transmitted from the drive source to the operation unit, a second gear as the power transmission gear engaged with the first gear and transmitting the power to the first gear, and a dummy gear not having a function of transmitting the power, and
the dummy gear is engaged with the first gear and has a rotation center arranged in a staggered pattern with respect to the first gear and the second gear as viewed from the axial direction.