Push button panel for an elevator
First Claim
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1. A push button panel comprising:
- a substantially rigid front plate having a front surface and a rear surface, said front surface including at least one push button area located thereon;
a back plate located proximate to said rear surface of said front plate, said back plate including a first aperture;
a pressure sensitive film located between said front plate and said back plate and abutting said front plate and said back plate, said pressure sensitive film including a second aperture;
at least one signal conductor associated with said pressure sensitive film for conducting a signal produced by said pressure sensitive film; and
indicator means aligned with said first aperture and said second aperture for indicating when mechanical work has been applied to the push button area, said indicator means being visible through said first aperture, said second aperture, and a portion of said front plate;
whereby mechanical work applied to the push button area is transferred to the pressure sensitive film to produce said signal in said signal conductor.
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Abstract
The invention relates to a push button panel for an elevator. The push button panel includes a front panel and push button areas provided on the front surface of the front panel. The front panel is made of a material having a high degree of rigidity. At least in the regions of the push button areas, the back surface of the front panel is provided with elements sensitive to pressure changes. The sensor element is connected by at least one signal conductor to the data transmission system of the elevator. The sensor element preferably consists of a film which, when subjected to mechanical work, produces an electric signal.
22 Citations
13 Claims
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1. A push button panel comprising:
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a substantially rigid front plate having a front surface and a rear surface, said front surface including at least one push button area located thereon; a back plate located proximate to said rear surface of said front plate, said back plate including a first aperture; a pressure sensitive film located between said front plate and said back plate and abutting said front plate and said back plate, said pressure sensitive film including a second aperture; at least one signal conductor associated with said pressure sensitive film for conducting a signal produced by said pressure sensitive film; and indicator means aligned with said first aperture and said second aperture for indicating when mechanical work has been applied to the push button area, said indicator means being visible through said first aperture, said second aperture, and a portion of said front plate; whereby mechanical work applied to the push button area is transferred to the pressure sensitive film to produce said signal in said signal conductor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13)
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11. A push button panel comprising:
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a substantially rigid front plate having a front surface and a rear surface, said front surface including at least one push button area located thereon; a back plate located proximate to said rear surface of said front plate; a pressure sensitive film located between said front plate and said back plate and abutting said front plate and said back plate; at least one signal conductor associated with said pressure sensitive film for conducting a signal produced by said pressure sensitive film; and indicator means for indicating when mechanical work has been applied to the push button area; whereby mechanical work applied to the push button area is transferred to the pressure sensitive film to produce said signal in said signal conductor, and wherein said pressure sensitive film includes a pair of electrodes, and wherein said signal corresponds to a change in capacitance between said pair of electrodes.
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Specification