Tiltable wall mounts
The invention relates to improvements in tiltable wall mounts, and in particular to a self-locking tiltable wall mount for a screen, such as a plasma display or television screen. The tiltable wall mount for a screen comprises wall attachment means for attaching the mount to a substantially vertical surface and screen attachment means for attaching a screen to the mount. The screen attachment means are pivotally connected at one end to one end of the wall attachment means. The wall mount also has a tilt mechanism interconnecting the mount and screen attachment means, said tilt mechanism comprising a locking device comprising at least one cam follower which is biased into abutment with a stepped cam surface projecting from the wall attachment means to prevent relative movement between the wall and screen attachment means. The locking device has means to release the cam follower from the cam surface when manual pressure is applied to enable the screen mount means to pivot and tilt relative to the wall mount means.
1. A tiltable wall mount for a screen comprising wall attachment means for attaching the mount to a substantially vertical surface, screen attachment means for attaching a screen to the mount, said screen attachment means being pivotally connected at one end to one end of the wall attachment means, and a tilt mechanism interconnecting the mount and screen attachment means, said tilt mechanism comprising a locking device comprising at least one cam follower which is biased into abutment with a stepped cam surface projecting from the wall attachment means to prevent relative movement between the wall attachment means and the screen attachment means, said locking device further comprising an adjustment bar with a longitudinal axis, wherein manual pressure resulting in movement of the adjustment bar in a direction along the longitudinal axis releases the cam follower from the cam surface to enable the screen mount means to pivot and tilt relative to the wall mount means.
2. A tiltable wall mount as claimed in claim 1 in which the wall attachment means comprise at least one wall bracket and means for affixing the at least one wall bracket to a substantially vertical surface.
3. A tiltable wall mount as claimed in claim 1 in which the cam surface comprises a wedge shaped flange projecting horizontally from the wall bracket.
4. A tiltable wall mount as claimed in claim 1 in which the screen attachment means comprise at least one screen bracket having means for attachment to a rear surface of a screen and a support frame, the at least one screen bracket having means for removably attaching it to the support frame.
5. A tiltable wall mount as claimed in claim 4 in which the support frame comprises a plurality of rods held in a substantially vertically spaced apart configuration by a plurality of tilt brackets.
6. A tiltable wall mount as claimed in claim 1 in which the tilt mechanism further comprises at least one tilt arm connected pivotally at one end to the at least one tilt bracket and at the other end to the at least one wall bracket.
7. A tiltable wall mount as claimed in claim 6 in which the adjustment bar connects the at least one tilt arm to the at least one wall bracket, wherein manual pressure resulting in horizontal axial movement of adjustment bar releases the cam follower from the cam surface to unlock the locking device.
8. A tiltable wall mount as claimed in claim 6 in which an end of the tilt arm is formed to provide said cam follower.
9. A tiltable wall mount as claimed in claim 6 in which the lower end of the at least one tilt arm is pivotally attached to the at least one tilt bracket by means of a pin which is slidable in an elongate longitudinal slot in the at least one tilt bracket.