| 摘要 |
A positioning gear, bracket and system comprises first and second gear trains 21, 22 having a common geared body 4 with first and second gear segments 4a, 4b meshing with a first and second driving gears, e.g. worm gears 5, 9. A first connector 7 connects a first member, such as a wall, to a first axis 21a and second connector 8 connects a second member to a second axis 22a. The connectors may comprise an assembly of a mounting plate 7a, 8a and bolts/nuts 7b/8b, although other arrangements are possible. The first and second gear segments 4a, 4b may be formed as arcs having a substantially constant radius or other gear geometries or types could be used. One or more of the first and second driving gears 5, 9 may be resiliently sprung against the respective first and second gear segment 4a, 4b so as to minimise any backlash. Spring resilience may be provided at an interface where the worm gear 5, 9 is bolted to the respective mounting plate 7a/8a. |
