Hubs for wall mounting systems
Improvements are provided for hubs for wall mounting systems for screens, and in particular to a hub for a wall mounting system for a flat panel screen, such as a plasma display or television screen, which enables the screen to be tilted. The hub comprises a casing, means for attaching the hub to a screen bracket, means for attaching the hub to an arm of a wall mount, and a tilt member. The tilt member has a sliding member which is located within an arcuate cavity in the casing such that the sliding member and casing are slidable relative to each other to enable a screen attached to the mounting system to be tilted about a horizontal pivot axis. The arc is defined by the cavity having its centre, which forms the pivot axis; offset from the centre of gravity of the screen. The hub further comprises a compression spring located within the casing and biased to provide a counterbalancing force so that the screen remains stationery in any position.
1. A hub for a wall mounting system for a screen comprising a casing, means for attaching the hub to a screen bracket, means for attaching the hub to an arm of a wall mount, and a tilt member having a sliding member which is located within an arcuate cavity in the casing such that the sliding member and casing are slidable relative to each other to enable a screen attached to the mounting system to be tilted about a horizontal pivot axis, the arcuate cavity defining an arc having its centre, which forms the pivot axis, and which in use is adapted to be offset from a centre of gravity of the screen, the hub further comprising a compression spring located within the casing and biased to provide a counterbalancing force so that the screen remains stationery in any position, and wherein the means for attaching the hub to an arm of a wall mount comprises a flange of the tilt member.
2. A hub as claimed in claim 1 further comprising a locking device for locking the sliding member relative to the casing.
3. A hub as claimed in claim 2 in which the locking device comprises a rotatable arm.
4. A hub as claimed in claim 1 in which the means for attaching the hub to a screen bracket comprises a cylindrical support member having a first and second end, and a flange at the first end secured within the casing and means for fixing the second end to a screen bracket.
5. A hub as claimed in claim 1 in which the spring is located in a bore at a lower end of the casing, an upper end of the bore merging with the arcuate cavity.
6. A hub as claimed in claim 5 in which the spring is located on a spigot at a lower end of the bore.
7. A wall mounting system for a screen comprising a wall mount for attachment to a wall, a screen bracket for attachment to a screen and a hub as claimed in claim 1 attached to the wall mount and the screen bracket.