Multi-position switch

• US 4,348,556 A
• Filed: 03/30/1981
• Issued: 09/07/1982
• Est. Priority Date: 03/30/1981
• Status: Expired due to Fees

• Current Assignee: Gettig Engineering & Manufacturing Company Incorporated
• Original Assignee: Gettig Engineering & Manufacturing Company Incorporated
• Inventors: Gettig, William A., Shook, Larry E.
• Primary Examiner(s): Truhe, J. V.
• Assistant Examiner(s): Ginsburg, Morris
• Application Number:
  US06/248,975
• Time in Patent Office: 526 Days
• Field of Search: 200/5 R, 200/6 R, 200/6 A, 200/6 B, 200/6 BA, 200/6 BB, 200/6 C, 200/17 R, 200/61.85, 200/153 K, 273/DIG. 28, 273/85 G
• US Class Current: 200/5.00R
• CPC Class Codes: G05G 2009/04725 with coil spring
• CPC Class Codes: G05G 2009/04744 Switches
• CPC Class Codes: G05G 2009/04777 with additional push or pull action on the handle
• CPC Class Codes: G05G 9/04796 for rectilinear control along the axis of the controlling member

Abstract

A multi-position switch includes a movable actuator rod projecting from one end of a housing and having a cylindrical contactor disc within the housing displaceable into a plurality of radial positions to actuate a selected one or a selected pair of circuits as the contactor engages and radially deflects adjacent ones of a plurality of resilient contacts arranged concentrically about the actuator rod. The displacement of the rod and its disc is regulated by an encircling control element provided with alternate radial crests and valleys. Groups of adjacent contacts are electrically joined in series such that displacement of the disc into a control element valley axially aligned with any one group of contacts closes one circuit while displacement into either adjacent control element valley closes an alternate circuit involving two adjacent series of contacts. An additional circuit is regulated by either of two means including the axial depression of a handle on the actuator rod to close a circuit through the rod, handle and housing of the switch or alternatively, by means of a trigger mounted exteriorly of the housing and selectively closing a separate contact switch assembly attached to the housing.

Claims

1. A multi-position switch including, a housing having a cavity therein, an actuator rod provided with a lower portion disposed within said housing cavity, a contactor joined to said rod within said housing cavity, supporting means joined to said rod lower portion to maintain said rod in a normal at-rest axial position within said housing and allow radial displacement thereof, said joined contactor, rod and supporting means of electrically conductive material and defining a common primary side of a plurality of circuits to be completed upon said radial displacement of said rod, a plurality of normally free-standing longitudinal conductive contacts surrounding said contactor and spaced therefrom when said rod is in said at-rest position, selected ones of said contacts representing the secondary side of a plurality of circuits, said housing including a control element surrounding said rod and adapted to restrict the displacement of said rod into a plurality of radial directions aligned with respective ones of said contacts and alternately disposed intermediate other ones of said contacts, said control element including a plurality of radially extending valleys for receiving said rod and allowing its radial displacement, alternate ones of said valleys aligned with at least one of said contacts associated with a single circuit whereby displacement of said rod into one of said alternate valleys directs said contactor into engagement with at least one of said associated contacts to complete a single circuit, and intermediate ones of said valleys vertically disposed intermediate two of said contacts associated with two separate circuits whereby displacement of said rod into one of said intermediate valleys directs said contactor into engagement with said contacts associated with two separate circuits to complete both of said two circuits.

2. A switch according to claim 1 including, a base plug on said housing, said contacts each having a lower portion mounted in said plug and terminating in an attachment tip and said contacts provided with opposite free ends normally concentrically arranged around said contactor and radially spaced from said contactor and housing.

3. A switch according to claim 1 including, a dielectric control member within said housing, said contacts having free ends disposed adjacent said contactor, said control member including a contact guide and separating element encircling said rod and provided with a plurality of radial slots, and each one of said contact free ends disposed in one of said radial slots.

4. A switch according to claim 1 wherein, said plurality of contacts are circularly disposed and equispaced from one another.

5. A switch according to claim 1 wherein, said rod control element alternate ones of said valleys are circularly equi-spaced from one another and said rod when displaced into any one of said alternate ones of said valleys urges said contactor to engage and radially displace a plurality of said contacts all associated with a single circuit.

6. A switch according to claim 1 including, a printed circuit board attached to said housing, said contacts each having an attachment tip engaging said board, said rod supporting means having a central contact engaging said board, and conductive pads on said board joining adjacent ones of said contact tips into a plurality of circularly equi-spaced individual circuits.

7. A switch according to claim 1 wherein, said housing having conductive means extending between opposite ends thereof, said rod including an upper end projecting beyond said housing cavity, a handle upper section provided with a downwardly opening cavity containing said rod upper end, a handle lower section surrounding said rod beneath said handle upper section, conductive means on said handle lower section juxtaposed said housing, means slidably mounting said handle sections upon said rod upper end and providing continuous conductivity between said rod and said lower section conductive means and spring means normally biasing said lower section conductive means away from said housing whereby, axial depression of said handle upper section against the force of said spring means displaces said handle lower section conductive means into engagement with said housing to complete a circuit in addition to said circuits completed by engagement between said contactor and contacts.

8. A switch according to claim 1 wherein, radial displacement of said rod into a selected one of said alternate ones of said control element valleys initially produces engagement between said contactor and a single one of said contacts axially aligned with said selected one of said valleys and continued radial displacement of said rod radially subsequently deflects said engaged one of said contacts and produces engagement between said contactor and two other of contacts respectfully disposed on both sides of said initially engaged one of said contacts.

9. A switch according to claim 1 including, four each of said alternate ones and intermediate ones of said control element valleys.

10. A switch according to claim 1 including, a contact guide and separating element within said housing and surrounding said rod, said separating element provided with a plurality of radial slots, and each one of said contacts in one of said slots.

11. A switch according to claim 2 wherein, said intermediate ones of said control element valleys are disposed along vertical axes each extending between two adjacent ones of said contacts.

12. A switch according to claim 4 wherein, said contacts comprise resilient elements of wire-like material.

13. A switch according to claim 6 wherein, each of said pads joined to one said contact tips is vertically aligned with one said alternate ones of said control element valleys.

14. A switch according to claim 7 wherein, said housing is constructed of conductive material and said control element includes an insulative sleeve surrounding and normally spaced from said contacts.

15. A switch according to claim 7 wherein, said lower section conductive means includes a radial flange and said mounting means includes a sleeve joined to said flange and slidably engaging sid rod upper end.

16. A switch according to claim 8 including, conductive means joining in series said one of said contacts initially engaged by said contactor and said two other of said contacts respectfully disposed on both sides of said initially engaged one of said contacts.

17. A switch according to claim 1 including, a contact switch member carried by said housing and associated with an extra circuit in addition to said plurality of circuits, and trigger means mounted adjacent said housing operable to actuate said contact switch member to complete said extra circuit.

18. A switch according to claim 17 including, a casing surrounding said switch housing and contact switch member, and said trigger means mounted within said casing and having an outer edge projecting exteriorly therefrom.