Worm mechanism and universal head apparatus using the same

摘要

Provided is a worm mechanism provided with a worm shaft including a worm, and a worm wheel that meshes with the worm, the worm mechanism including: a first holding member configured to join a drive source that drives the worm shaft to bearings that support the worm shaft at both sides so that the worm shaft is rotatable; and a first urging member configured to urge the first holding member in a first direction in which the worm meshes with the worm wheel.

主权项

1. A worm mechanism provided with a worm shaft including a worm, bearings supporting the worm shaft at both sides so that the worm shaft is rotatable, and a worm wheel that meshes with the worm, the worm mechanism comprising:
a first holding member that holds a drive source that drives the worm shaft and that holds the bearings; and a first urging member configured to urge the first holding member in a first direction in which the worm meshes with the worm wheel, wherein the first holding member includes a holding portion configured to hold bearings that support the worm shaft at both sides so that the worm shaft is rotatable, and wherein the first holding member includes: a first surface holding the drive source; a second surface crossing perpendicularly the first surface and holding the holding portion; and a third surface crossing perpendicularly the first surface and the second surface, and being held by a second holding member.