Patent ID: 7874537
Filing Date: 2011-01-25
Classification: F16M,Y10S

Abstract:
1. A swivel device comprising: a turning mechanism portion that includes a driving source and transmits a driving force; a housing member that houses the turning mechanism portion; a first turning member that engages with the turning mechanism portion and is capable of being turned by the driving force; a second turning member to which the driving force is transmitted via the first turning member, the second turning member being made of a metal sheet; a plurality of protrusion portions each having a cylindrical shape and provided integrally with the second turning member by deforming a predetermined region thereof, the plurality of protrusion portions being arranged with predetermined spaces in a swivel direction; a groove portion that is provided integrally with the first turning member in a circular pattern and into which the plurality of protrusion portions of the second turning member are inserted in a manner slidable in the swivel direction, wherein a cross sectional diameter of the protrusion portions having a cylindrical shape is slightly larger than a groove width of the groove portion and the protrusion portions are inserted into the groove portion so that a predetermined friction resistance is caused by friction between the protrusion portions and the groove portion.