QUADRUPOLE MAGNETIC CODED SWITCH

• US 20110291778A1
• Filed: 05/25/2010
• Published: 12/01/2011
• Est. Priority Date: 05/25/2010
• Status: Active Grant

• Current Assignee: Honeywell International Inc.
• Original Assignee: Honeywell International Inc.
• Inventors: Rajula, Gangi Reddy
• Granted Patent: US 8,350,650 B2
• Time in Patent Office: Days
• US Class Current: 335/207
• CPC Class Codes: H01H 36/0033 Mountings; Housings; Connections
• CPC Class Codes: H01H 36/0046 Limit switches, also fail-safe operation or anti-tamper considerations
• CPC Class Codes: H01H 36/006 comprising a plurality of reed switches, e.g. selectors or joystick-operated

Abstract

A quadrupole magnetic coded switch includes a switch housing, an actuator, one or more switch dipole magnets, and a plurality of magnetically operated switch circuits. The actuator housing is movable relative to the switch housing. The plurality of actuator dipole magnets are coupled to the actuator housing and are movable therewith. The one or more switch dipole magnets are coupled to the switch housing. The one or more switch dipole magnets and the plurality of actuator dipole magnets are arranged to generate a quadrupole magnetic field. Each magnetically operated switch circuit is disposed within the switch housing and is configured to transition between a plurality of switch positions in response to relative movement of the actuator housing and the switch housing.

Claims

1. A quadrupole magnetic coded switch, comprising:

a switch housing;

an actuator housing movable relative to the switch housing;

a plurality of actuator dipole magnets coupled to the actuator housing and movable therewith;

one or more switch dipole magnets coupled to the switch housing, the one or more switch dipole magnets and the plurality of actuator dipole magnets arranged to generate a quadrupole magnetic field; and

a plurality of magnetically operated switch circuits, each magnetically operated switch circuit disposed within the switch housing and configured to transition between a plurality of switch positions in response to relative movement of the actuator housing and the switch housing.

2. The quadrupole magnetic coded switch of claim 1, wherein each magnetically operated switch circuit is disposed within the switch housing to transition between the two switch positions when:

the actuator housing and switch housing are moved toward, and are within a first predetermined distance of, each other; and

the actuator housing and switch housing are moved away from, and are at least a second predetermined distance from, each other.

3. The quadrupole magnetic coded switch of claim 2, wherein the two switch positions include a closed position and an open position.

4. The quadrupole magnetic coded switch of claim 3, wherein, when the actuator housing and switch housing are moved toward, and are within the first predetermined distance of, each other:

a first subset of the plurality of magnetically operated switch circuits transitions from the open position to the closed position; and

a second subset of the plurality of magnetically operated switch circuits transitions from the closed position to the open position.

5. The quadrupole magnetic coded switch of claim 4, wherein, when the actuator housing and switch housing are moved away from, and are at least the second predetermined distance from, each other:

the first subset of the plurality of magnetically operated switch circuits transitions from the closed position to the open position; and

the second subset of the plurality of magnetically operated switch circuits transitions from the open position to the closed position.

6. The quadrupole magnetic coded switch of claim 2, wherein the first predetermined distance is less than the second predetermined distance.

7. The quadrupole magnetic coded switch of claim 1, wherein:

the plurality of actuator dipole magnets comprises three dipole magnets; and

the one or more switch dipole magnets comprises one dipole magnet.

8. The quadrupole magnetic coded switch of claim 1, wherein:

the plurality of actuator dipole magnets comprises two dipole magnets; and

the one or more switch dipole magnets comprises two dipole magnets.

9. The quadrupole magnetic coded switch of claim 1, wherein at least one of the plurality of magnetically operated switch circuits comprises a plurality of sets of magnetically operated switch contacts electrically connected in series.

10. The quadrupole magnetic coded switch of claim 1, wherein each of the plurality of magnetically operated switch circuits comprises a plurality of sets of magnetically operated switch contacts electrically connected in series.

11. A quadrupole magnetic coded switch, comprising:

a switch housing;

an actuator housing movable relative to the switch housing;

a plurality of actuator dipole magnets coupled to the actuator housing and movable therewith;

one or more switch dipole magnets coupled to the switch housing, the one or more switch dipole magnets and the plurality of actuator dipole magnets arranged to generate a quadrupole magnetic field; and

a plurality of reed switches, each reed switch disposed within the switch housing and configured to transition between a plurality of switch positions in response to relative movement of the actuator housing and the switch housing,

wherein each reed switch transitions between the two switch positions when (i) the actuator housing and switch housing are moved toward, and are within a first predetermined distance of, each other, and (ii) the actuator housing and switch housing are moved away from, and are at least a second predetermined distance from, each other.

12. The quadrupole magnetic coded switch of claim 11, wherein the first predetermined distance is less than the second predetermined distance.

13. The quadrupole magnetic coded switch of claim 11, wherein the two switch positions include a closed position and an open position.

14. The quadrupole magnetic coded switch of claim 13, wherein, when the actuator housing and switch housing are moved toward, and are within the first predetermined distance of, each other:

a first subset of the plurality of reed switches transitions from the open position to the closed position; and

a second subset of the plurality of reed switches transitions from the closed position to the open position.

15. The quadrupole magnetic coded switch of claim 14, wherein, when the actuator housing and switch housing are moved away from, and are at least the second predetermined distance from, each other:

the first subset of the plurality of reed switches transitions from the closed position to the open position; and

the second subset of the plurality of reed switches transitions from the open position to the closed position.

16. The quadrupole magnetic coded switch of claim 11, wherein:

the plurality of actuator dipole magnets comprises three dipole magnets; and

the one or more switch dipole magnets comprises one dipole magnet.

17. The quadrupole magnetic coded switch of claim 11, wherein:

the plurality of actuator dipole magnets comprises two dipole magnets; and

the one or more switch dipole magnets comprises two dipole magnets.

18. A quadrupole magnetic coded switch, comprising:

a switch housing;

an actuator housing movable relative to the switch housing;

a plurality of actuator dipole magnets coupled to the actuator housing and movable therewith;

one or more switch dipole magnets coupled to the switch housing, the one or more switch dipole magnets and the plurality of actuator dipole magnets arranged to generate a quadrupole magnetic field; and

a magnetically operated switch circuit disposed within the switch housing and configured to move (i) from an open position to a closed position when the actuator housing and switch housing are moved toward, and are within a first predetermined distance of, each other, and (ii) from the closed position to the open position when the actuator housing and switch housing are the moved away from, and are at least a second predetermined distance from, each other,

wherein the first predetermined distance is less than the second predetermined distance.

19. The quadrupole magnetic coded switch of claim 18, further comprising:

a second magnetically operated switch circuit disposed within the switch housing, the second magnetically operated switch circuit configured to move from (i) an open position to a closed position when the actuator housing and switch housing are moved toward, and are within the first predetermined distance of, each other, and (ii) from the closed position to the open position when the actuator housing and switch housing are the moved away from, and are at least the second predetermined distance from, each other.

20. The quadrupole magnetic coded switch of claim 19, further comprising:

a third magnetically operated switch circuit disposed within the switch housing, the third magnetically operated switch circuit configured to move from (i) a closed position to an open position when the actuator housing and switch housing are moved toward, and are within the first predetermined distance of, each other, and (ii) from the open position to the closed position when the actuator housing and switch housing are the moved away from, and are at least the second predetermined distance from, each other.