Multi-position electrical switch

• US 4,896,003 A
• Filed: 06/30/1989
• Issued: 01/23/1990
• Est. Priority Date: 06/30/1989
• Status: Expired due to Fees

• Current Assignee: Man-Ching Hsieh
• Original Assignee: Man-Ching Hsieh
• Inventors: Hsieh, Man-Ching
• Primary Examiner(s): Scott, J. R.
• Application Number:
  US07/374,054
• Time in Patent Office: 207 Days
• Field of Search: 200/5 R, 200/5 A, 200/6 A, 200/511, 200/512, 200/517, 200/557, 200/292, 200/339, 200/DIG. 29
• US Class Current: 200/6.00A
• CPC Class Codes: G05G 2009/04711 with substantially hemispherical bearing part forced into engagement, e.g. by a spring
• CPC Class Codes: G05G 2009/04744 Switches
• CPC Class Codes: G05G 9/047 the controlling member being movable by hand about orthogonal axes, e.g. joysticks for switches H01H25/04
• CPC Class Codes: H01H 2221/012 Joy stick type
• CPC Class Codes: H01H 25/041 having a generally flat operating member depressible at different locations to operate different controls

Abstract

A multi-directional switch which is utilized for completing selected ones of a number of different electrical circuits is placed in a housing in which the different electrical circuits to be controlled terminate in pairs of spaced-apart conductors located in the bottom of the housing. A cylindrical pushbutton actuating member extends upwardly through a circular opening in the top of the housing. This actuating member has a flange on the lower end which extends radially outwardly from the main body of the actuating member, and this flange is supported on a deformable support which has a circular opening in the center. A ball bearing is placed in the opening the deformable support and engages the bottom of the housing and the bottom of the actuating member. Conductive contacts are placed on the lower side of the deformable support in registry with the various contact pairs; so that when the actuating member is tilted over a selected contact pair, the corresponding conductive contact completes an electrical circuit across the contact pair selected by the direction of tilting the actuating member.

Claims

1. A multi-position electrical switch including in combination:

a housing having a bottom and a top, said top having an opening therethrough;

at least two pairs of spaced-apart conductors located adjacent the bottom of said housing, each pair of conductors located at a predetermine distance from a point on said bottom;

an actuating member extending through an opening in said top, said actuating member having a flange on the lower end thereof, said flange extending radially outwardly from a central axis through said actuating member, said opening in said top being aligned with said point on said bottom, and said flange being of a greater diameter than the width of said opening;

a deformable resilient support member having a circular opening in the center thereof and having at least a portion thereof in contact with the lower surface of said flange;

spherical bearing means located in the opening in said support member, said bearing means engaging said point on the bottom of said housing and a point at the center of the bottom of said flange of said actuating member;

at least two conductive contact means located on the bottom of said deformable support member and positioned for bridging corresponding ones of said pairs of spaced-apart conductors, whereupon when said actuating member is tilted downwardly about said spherical bearing means toward a selected one of said pairs of spaced-apart conductors, a corresponding one of said contact means is pressed into contact to bridge the space between such selected one of said pairs of conductors to complete an electrical circuit therethrough so long as said actuating member remains tilted downwardly, release of said actuating member allowing said deforable resilient support member to return said actuating member to a rest position where none of said conductive contact means are in electrical contact with any of said spaced-apart pairs of conductors.

2. The combination according to claim 1 wherein said support member is made of rubber-like material.

3. The combination according to claim 2 wherein said conductive contact means are made of conductive rubber material.

4. The combination according to claim 3 wherein said conductive contact means are circular disks having a diameter greater than the space between the corresponding pairs of spaced-apart conductors.

5. The combination according to claim 3 wherein said spaced-apart conductors comprise printed circuit conductive strips extending in parallel pairs radially outwardly from said point on said bottom.

6. The combination according to claim 5 wherein said pairs of spaced-apart conductors comprise four pairs of spaced-apart conductors each located at ninety degree intervals in a circle, the center of which is said point on said bottom.

7. The combination according to claim 6 wherein said spherical bearing means comprises a ball bearing.

8. The combination according to claim 7 wherein said ball bearing is a metal ball bearing, and said bottom of said housing and said actuating member are made of plastic material.

9. The combination according to claim 7 wherein said actuating member has a body portion in the form of a cylindrical section and said flange on the lower end thereof is a circular flange having a diameter greater than the diameter of said body portion of said actuating member.

10. The combination according to claim 9 wherein the top of said actuating member is a concave surface.

11. The combination according to claim 10 wherein said deformable support member is a circular support member having an outer flange, with an inner portion spaced upwardly from the bottom edge of said outer flange, said conductive contact means being attached to said inner portion on the bottom side thereof and normally spaced above the corresponding pairs of said conductors, with said actuating member in a rest position thereof.

12. The combination according to claim 11 wherein at least a portion of said flange on said actuating member overlies said conductive contact means, with said rest position of said actuating member provided by a portion of the upper surface of said support member.

13. The combination according to claim 12 wherein a mating semi-spherical concave depression is formed on the bottom of said actuating member at the center thereof for engaging said spherical bearing means.

14. The combination according to claim 1 wherein said spherical bearing means comprises a ball bearing.

15. The combination according to claim 14 wherein said ball bearing is a metal ball bearing, and said bottom of said housing and said actuating member are made of plastic material.

16. The combination according to claim 1 wherein said actuating member has a body portion in the form of a cylindrical section and said flange on the lower end thereof is a circular flange having a diameter greater than the diameter of said body portion of said actuating member.

17. The combination according to claim 16 wherein the top of said actuating member is a concave surface.

18. The combination according to claim 16 wherein said deformable support member is a circular support member having an outer flange, with an inner portion spaced upwardly from the bottom edge of said outer flange, said conductive contact means being attached to said inner portion on the bottom side thereof and normally spaced above the corresponding pairs of said conductors, with said actuating member in a rest position thereof.

19. The combination according to claim 1 wherein at least a portion of said flange on said actuating member overlies said conductive contact means, with said rest position of said actuating member provided by a portion of the upper surface of said support member.

20. The combination according to claim 1 wherein a mating semi-spherical concave depression is formed on the bottom of said actuating member at the center thereof for engaging said spherical bearing means.

21. The combination according to claim 1 wherein said pairs of spaced-apart conductors comprise four pairs of spaced-apart conductors each located at ninety degree intervals in a circle, the center of which is said point on said bottom.

22. The combination according to claim 1 wherein said spaced-apart conductors comprise printed circuit conductive strips extending in parallel pairs radially outwardly from said point on said bottom.

23. The combination according to claim 1 wherein said deformable support member is a circular support member having an outer flange, with an inner portion spaced upwardly from the bottom edge of said outer flange, said conductive contact means being attached to said inner portion on the bottom side thereof and normally spaced above the corresponding pairs of said conductors, with said actuating member in a rest position thereof.

24. The combination according to claim 1 wherein said conductive contact means are made of conductive rubber material.

25. The combination according to claim 24 wherein said conductive contact means are circular disks having a diameter greater than the space between the corresponding pairs of spaced-apart conductors.