Touch Screen Element
A method of mounting a touch-screen element onto a control panel, and a corresponding assembled unit. In the assembled apparatus, the control panel has the touch-screen element mounted thereto. The touch-screen element comprises a sensing element mounted on a semi-rigid carrier, and first and second clamps for holding opposed sides of the touch-screen element to the panel. At least the second clamps is moveable between open and closed configurations, the open configuration being used during assembly. For assembly, one side of the touch-sensitive element is inserted into the first clamp. The touch-sensitive element is then bent into a curve and pushed down into the second clamp while the second clamp is in its open configuration. Once the touch-sensitive element has been flattened onto the panel and is in the second clamp, the second clamp is closed to complete the assembly.
1 . Apparatus comprising:
a panel;
a touch-screen element mounted to the panel, the touch-screen element comprising a sensing element mounted on a carrier, and
first and second clamp mechanisms for holding respective first and second edges of the touch-screen element to the panel; wherein the second clamp mechanism is moveable from an open configuration in which the touch-screen element can be fitted to the panel to a closed configuration in which the touch-screen element is held to the panel by the first and second clamp mechanisms.
2 . Apparatus according to claim 1 , wherein the second clamp mechanism comprises a base part and a moveable part, wherein the base part is fixed to the panel and the moveable part is moveable between a mated position in which the moveable part is mated to the base part and a non-mated position in which the moveable is not mated to the base part, wherein the moveable part includes a protrusion adapted to hold the touch-screen element to the panel when in the mated position.
3 . Apparatus according to claim 2 , wherein the moveable part is linked to the base part by a hinge section.
4 . Apparatus according to claim 2 , wherein the base part and the movable part have cooperating mating surfaces arranged to latch together when in the mated position.
5 . Apparatus according to claim 2 , wherein the protrusion adapted to hold the touch-screen element to the panel when in the mated position is deformable.
6 . Apparatus according to claim 4 , wherein the base part includes a slide-prevention protrusion adjacent the panel and extending beyond the base part's mating surface.
7 . Apparatus according to claim 2 , wherein the moveable part is a removable insertion part having a lip assembly for providing the protrusion adapted to hold the touch-screen element to the panel and configured so that when a tongue of the insertion part is inserted into a channel of the base part the lip assembly holds the touch-screen element to the panel.
8 . Apparatus according to claim 7 , wherein the tongue of the insertion part and the channel of the base part are structured so as to facilitate a friction fit between them.
9 . Apparatus according to claim 7 , wherein the tongue of the insertion part and the channel of the base part comprise respective grooves configured to mate with one-another so as to facilitate a friction fit between them.
10 . Apparatus according to claim 7 , wherein the lip assembly includes a compliant element configured to compress against the touch-screen element when the insertion part is mated to the base part.
11 . Apparatus according to claim 2 , wherein the base part of the second clamp mechanism is fixed to the panel by an adhesive.
12 . Apparatus according to claim 2 , wherein the base part of the second clamp mechanism is integrally formed with the panel.
13 . Apparatus according to claim 1 , wherein the first clamp mechanism is fixed to the panel by an adhesive.
14 . Apparatus according to claim 1 , wherein the first clamp mechanism is integrally formed with the panel.
15 . Apparatus according to claim 1 , wherein the second clamp mechanism is moveable from its closed configuration to its open configuration, thereby providing a releasable mechanism.
16 . Apparatus according to claim 1 , wherein the respective first and second edges of the touch-screen element are opposing edges.
17 . Apparatus according to claim 1 , wherein the touch-screen element has a curved shape with a convex side thereof facing the panel so that a surface of the touch-screen element is biased against a surface of the panel when the touch-screen element is mounted to the panel.
18 . Apparatus according to claim 1 , wherein a surface of the panel has a curved shape such that a surface of the touch-screen element is biased against the surface of the panel when the touch-screen element is mounted to the panel.
19 . Apparatus according to claim 1 , further comprising alignment strips fixed to the panel at locations adjacent edges of the touch-screen element other that the first and second edges.
20 . Apparatus according to claim 1 , further comprising an index matching fluid or anti-reflecting coating between the touch-screen element and the panel.
21 . Apparatus according to claim 1 , wherein the sensing element is laminated onto the carrier.
22 . Apparatus according to claim 1 , wherein the sensing element is mounted to the carrier using a pressure sensitive adhesive
23 . Apparatus according to claim 1 , further comprising a display module arranged so that the touch-screen element is positioned over a display of the display module.
24 . A method of mounting a touch-screen element onto a control panel, the method comprising:
providing a touch-sensitive element having first and second edges;
providing a control panel having a boundary surface to which the touch-sensitive element is to be mounted;
providing the control panel with first and second clamp mechanisms for holding the first and second edges of the touch-screen element to the control panel, wherein the second clamp mechanism is in an open configuration;
inserting a first edge of the touch-sensitive element into the first clamp mechanism;
bending the touch-sensitive element into a curved shape so that its convex side faces the boundary surface;
pushing the second edge of the touch-sensitive element downwards into the second clamp mechanism so that the touch-sensitive element lays flat against the boundary surface; and
moving the second clamp mechanism into a closed configuration to hold the touch-sensitive element in the panel.