Elevator system device with authorized access control

An illustrative example elevator system device includes an interface configured to operate in a first mode that allows an elevator passenger to communicate with the elevator system. The elevator passenger may communicate with the elevator system by inputting an indication for desired elevator service or receive an indication regarding elevator service. A magnetically actuated switch selectively causes the interface to operate in a second mode that allows an authorized individual to communicate with the elevator system in a manner that is different than an elevator passenger communication in the first mode. The magnetically activated switch includes at least one magnet and at least one switch contact that changes between an open and closed state based on an interaction between the at least one magnet and a magnetic key brought into proximity of the at least one magnet by the authorized individual.

BACKGROUND

Elevator systems include a variety of devices that allow individuals to interact with the elevator system. For example, traditional hall call buttons allow elevator passengers to provide an indication that elevator service is desired from a particular landing. Car operating panels traditionally have allowed passengers to enter a desired destination floor to which they desire to be carried. More recently, destination entry devices allow passengers to indicate a desired destination from outside of an elevator car. Destination entry devices also may provide information to the passenger regarding the requested elevator service, such as the car that will carry the passenger to the desired destination.

Some elevator devices also provide features that allow authorized individuals to access certain portions of the elevator system. For example, some elevator system devices include a keyhole to receive a key from an authorized individual. If an appropriate key is inserted and turned, for example, the device may operate in a manner that allows an authorized individual to perform certain tasks, such as controlling aspects of the elevator system or altering some functionality or feature of the system.

One drawback to some known devices is that they are susceptible to vandalism. Manual keyholes, for example, may be tempting to unauthorized individuals to attempt to gain access to an otherwise protected or unaccessible portion of the system. Configuring elevator system devices to be less susceptible to vandalism brings with it the challenge of making the device relatively accessible to an authorized individual.

SUMMARY

An illustrative example elevator system device includes an interface configured to operate in a first mode that allows an elevator passenger to communicate with the elevator system. The elevator passenger may communicate with the elevator system by inputting an indication for desired elevator service or receive an indication regarding elevator service. A magnetically actuated switch selectively causes the interface to operate in a second mode that allows an authorized individual to communicate with the elevator system in a manner that is different than an elevator passenger communication in the first mode. The magnetically activated switch includes at least one magnet and at least one switch contact that changes between an open and closed state based on an interaction between the at least one magnet and a magnetic key brought into proximity of the at least one magnet by the authorized individual.

In a further non-limiting embodiment of the elevator system of the previous paragraph, a surface is visible to the passenger or authorized individual. The magnetically actuated switch is situated behind a portion of the surface that conceals the magnetically actuated switch from the passenger.

In a further non-limiting embodiment of the elevator system of any of the previous paragraphs, the surface has a visible characteristic on the portion of the surface that does not provide any indication of the magnetically actuated switch behind the surface.

In a further non-limiting embodiment of the elevator system of any of the previous paragraphs, the magnetically actuated switch includes a biasing member that biases the at least one switch contact into a selected one of the open or closed states. The at least one magnet causes movement of the at least one switch contact into the other of the closed or open state by moving the at least one switch contact against the bias of the biasing member based on the interaction between the at least one magnet and the magnetic key.

In a further non-limiting embodiment of the elevator system of any of the previous paragraphs, the biasing member comprises a spring.

In a further non-limiting embodiment of the elevator system of any of the previous paragraphs, the biasing member comprises a hinge-style spring.

In a further non-limiting embodiment of the elevator system of any of the previous paragraphs, the device comprises a controller that controls whether the interface operates in the first mode or the second mode. Actuation of the magnetically actuated switch provides an indication to the controller to operate in the second mode to allow the authorized individual to communicate with the elevator system.

In a further non-limiting embodiment of the elevator system of any of the previous paragraphs, the at least one magnet has a selected magnetic pattern and the magnetic key has a corresponding magnetic pattern to activate the magnetically activated switch.

In a further non-limiting embodiment of the elevator system of any of the previous paragraphs, the at least one magnet is supported to move based on the interaction with the magnetic key and movement of the at least one magnet causes movement of the at least one switch contact between the open and closed states.

In a further non-limiting embodiment of the elevator system of any of the previous paragraphs, at least one of magnetic attraction or magnetic repulsion between the at least one magnet and the magnetic key causes the movement of the at least one magnet.

In a further non-limiting embodiment of the elevator system of any of the previous paragraphs, the at least one switch contact is electrically conductive when the at least one switch contact is in the closed state, the at least one switch contact is electrically conductive independent of a magnetic field of the at least one magnet and the at least one switch contact is electrically conductive independent of a magnetic field of the magnetic key.

In a further non-limiting embodiment of the elevator system of any of the previous paragraphs, a surface is adjacent to the interface, the surface is visible to the passenger, the magnetically actuated switch is concealed from the passenger's view behind the surface and the device includes an indication of the magnetically actuated switch position behind the surface.

In a further non-limiting embodiment of the elevator system of any of the previous paragraphs, the surface has an indicator or a characteristic that indicates that the magnetically actuated switch is behind the surface.

An illustrative example method of preventing unauthorized access to features of an elevator system device includes situating a passenger interface portion of the device in a location where the passenger interface portion is accessible by an elevator passenger. A magnetically actuated switch is situated near the passenger interface portion. The magnetically actuated switch controls an ability to access features of the elevator system. The magnetically actuated switch is concealed such that the switch is not visible to the elevator passenger.

In a further non-limiting embodiment of the method of the previous paragraph, the magnetically actuated switch is concealed behind a surface adjacent the passenger interface portion.

In a further non-limiting embodiment of the method of any of the previous paragraphs, the surface does not have any indicator or characteristic that would indicate that the magnetically actuated switch is behind the surface.

In a further non-limiting embodiment of the method of any of the previous paragraphs, a magnetic key is required to be placed in close proximity to the magnetically actuated switch to actuate the switch.

In a further non-limiting embodiment of the method of any of the previous paragraphs, the magnetically actuated switch includes at least one magnet and at least one switch contact. The at least one magnet moves based on magnetic interaction between the at least one magnet and the magnetic key, and movement of the at least one magnet moves the at least one switch contact between an open and a closed state.

In a further non-limiting embodiment of the method of any of the previous paragraphs, the device includes an indication or a characteristic that indicates a position of the magnetically actuated switch behind the surface.

In a further non-limiting embodiment of the method of any of the previous paragraphs, the indication or characteristic is on the surface.

Various features and advantages of at least one disclosed example embodiment will become apparent to those skilled in the art from the following detailed description. The drawings that accompany the detailed description can be briefly described as follows.

DETAILED DESCRIPTION

Elevator system devices designed according to an embodiment of this invention reduce the possibility for vandalism to such a device and reduce the likelihood of an unauthorized individual gaining access to features of an elevator system that are intended for limited access by authorized individuals. At the same time, such devices allow an authorized individual to gain access to such features in a convenient manner.

FIG. 1schematically illustrates selected portions of an elevator system20. An elevator car22and counterweight24are situated within a hoistway26in a known manner. The elevator car22is used for carrying passengers between various landings within a building, for example.

An elevator system device30is situated near a landing32to allow passengers to communicate with the elevator system20. The elevator system device30can allow a passenger, for example, to request elevator service or to receive an indication regarding elevator service. Another elevator system device34is included on the elevator car22. In some examples, the device34is a car operating panel that allows a passenger to request service to a particular floor, for example. The device34may also communicate information to passengers regarding elevator system operation or service. The particular configuration of the elevator system devices30and34may vary depending on the location and intended operation of those devices.

FIG. 2schematically illustrates an example elevator system device30or34. A passenger interface portion includes a keypad40and a display screen42. The passenger interface portion allows a passenger to provide an indication regarding desired elevator service or otherwise to communicate information to the elevator system. The passenger interface portion also allows for a passenger to receive information from the elevator system, such as an indication of how the elevator system will address the passenger's request for service.

The device30or34as shown inFIG. 2, includes a surface44adjacent the passenger interface portion. The surface44in this example provides an aesthetic surround adjacent the passenger interface portion. A magnetically actuated switch50is concealed behind the surface44so that the switch50is not visible to an elevator passenger or another individual looking at the device30,34. The presence or location of the magnetically actuated switch50is provided to authorized individuals who need to gain access to features or control over the elevator system20for service or maintenance, for example.

The surface44in the illustrated example does not include any indication or characteristic that would suggest or indicate the presence of the magnetically actuated switch50behind the surface44. Concealing the magnetically actuated switch50in a manner that leaves its presence undetectable to an ordinary observer reduces a likelihood for any attempted vandalism or unauthorized access to restricted features of the elevator system.

In other embodiments, the surface44or another portion of the device30includes an indication or characteristic that shows an authorized individual where the switch50is behind the surface44. Such an indication may be informative to authorized individuals (e.g., elevator mechanics or maintenance personnel) without making the presence of the switch50apparent to a typical elevator passenger.

The magnetically actuated switch50allows an authorized individual to gain access to a variety of elevator system functions or features. For example, an authorized mechanic or technician may need to perform a power reset, a diagnostic procedure, or an update of the device30,34or some other aspect of the elevator system20that can be accessed or controlled through an interaction with that device. Such an authorized individual has information or can obtain information regarding the location of the magnetically actuated switch50so that such an individual can gain the necessary access.

FIG. 3schematically illustrates an example embodiment of a magnetically actuated switch50. At least one magnet52is associated with at least one switch contact. In this example, there are multiple switch contacts54and56that are shown in an open or non-conducting state inFIG. 3. In this example, a biasing member60biases the contact56away from the contacts54to keep the switch in an open state. In the example ofFIGS. 3 and 4, the biasing member60comprises a hinge-style spring.

As shown inFIG. 4, when an authorized individual places a magnetic key70in proximity to the switch50, the magnet52is attracted to or drawn toward the magnetic key70. The magnetic attraction between the magnetic key70and the magnet52overcomes the bias of the biasing member60to move the magnetically actuated switch50between the open state shown inFIG. 3and the closed state shown inFIG. 4. Such movement of the magnet52causes the switch contact56to move into contact with the switch contacts54to complete or close a circuit. In this example, when the magnetically actuated switch50is in a closed state, electrical energy can flow through the switch50which provides an indication to a control circuit62that an authorized individual desires access to one or more features of the elevator system. The manner in which the control circuit62provides such access to an authorized individual can occur in a known manner.

FIG. 5schematically illustrates another example magnetically actuated switch configuration. In this example, the magnetically actuated switch50is in a normally open state but in this example, the presence of an appropriate magnetic key70causes movement of the magnet52away from the surface44to cause the contact56to move into conductive contact with the contacts54. In this example, when the magnetic key70is situated to repel the magnet52, the magnetically actuated switch50moves from an open to a closed state.

In either of the example switch configurations, the magnet52has a selected magnetic pattern, such as an arrangement of the magnet poles. The key70has to have a corresponding magnetic pattern to actuate the switch50.

While the examples ofFIGS. 3-6include closing the magnetically actuated switch50to initiate authorized access to selected features of the elevator system, other switch configurations are in a normally closed state and opening the switch with an appropriate magnetic key initiates authorized access.

Having the magnetically actuated switch50concealed behind the surface44removes the presence of the switch50from public view. Additionally, there is no requirement for any openings or visible switches or buttons that might otherwise be susceptible to vandalism. Embodiments designed according to this invention, therefore, provide enhanced security over elevator system devices and features while still providing relatively convenient access for an authorized individual.