Mechanism for generating control signals

• US 5,235,868 A
• Filed: 10/02/1991
• Issued: 08/17/1993
• Est. Priority Date: 10/02/1991
• Status: Expired due to Term

• Current Assignee: Immersion Corporation
• Original Assignee: Craig F. Culver
• Inventors: Culver, Craig F.
• Primary Examiner(s): NOT, DEFINED
• Assistant Examiner(s): Pitts, Andrea
• Application Number:
  US07/770,795
• Time in Patent Office: 685 Days
• Field of Search: 74/471 XY, 74/471 R, 340/706, 340/709, 340/710, 338/123, 338/132, 338/133, 178/18, 273/148 B
• US Class Current: 74/471.0XY
• CPC Class Codes: G05G 9/04 in which movement in two or more ways can occur simultaneously
• CPC Class Codes: G06F 3/0354 with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
• CPC Class Codes: Y10T 74/20201 Control moves in two planes

Abstract

A mechanism is provided for producing control signals for use in controlling equipment which includes a rotatable cylinder having on the surface thereof grooves which act with one or more gears to directly translate the rotation or sliding movements of the cylinder to encoders. In other embodiments, switches are activated by pressure on certain elements of the mechanism.

Claims

1. A control mechanism comprising:

means for guiding;

a contiguous cylindrical element mounted on said means for guiding for rotational and longitudinal movement relative to said means for guiding, said cylindrical element having a plurality of grooves on its surface;

movable coupling means having a plurality of projections positioned to mesh with said plurality of grooves on said cylindrical element; and

means for supporting said coupling means and translating movement of said coupling means to an encoder.

2. The structure of claim 1 wherein said grooves are longitudinal with respect to an axis of said cylindrical element such that rotation of said cylindrical element rotates said movable coupling means.

3. The structure of claim 1 wherein said grooves are annular with respect to an axis of said cylindrical element such that longitudinal movement of said cylindrical element rotates said movable coupling means.

4. The structure of claim 1 wherein said grooves are comprised of a first set of grooves which are annular with respect to an axis of said cylindrical element, and a second set of grooves which are longitudinal with respect to said axis.

5. The structure of claim 4 wherein said movable coupling means comprises a plurality of coupling elements positioned to mesh with said plurality of grooves such that at least one of said coupling elements is positioned for movement with rotation of said cylindrical element;

and at least one other of said coupling elements is positioned for movement as said cylindrical element is longitudinally moved.

7. The structure of claim 1 further comprising a switch such that a predetermined pressure on said means for guiding activates said switch.

13. The structure of claim 1 further including:

a switch bar depressibly coupled to said means for guiding; and

a switch positioned on said means for guiding and intermediate said switch bar and said means for guiding;

wherein a predetermined pressure on said switch bar activates said switch.

14. The structure of claim 5 further including:

a switch bar depressibly coupled to said means for guiding; and

a switch positioned on said means for guiding and intermediate said switch bar and said means for guiding;

wherein a predetermined pressure on said switch bar activates said switch.

15. The structure of claim 1 further including a servomotor coupled to said cylindrical element such that movement of said cylindrical element is modified in response to a feedback signal.

17. The structure of claim 1 further including:

first means coupled to said cylindrical element for imparting to said cylindrical element, in response to a given signal applied to said first means, a first selected force.

19. The structure of claim 1 wherein said means for guiding comprises a body having a surface for supporting said cylindrical element.

6. A control mechanism comprising:

means for guiding;

a cylindrical element mounted on said means for guiding for rotational and longitudinal movement relative to said means for guiding, said cylindrical element having a plurality of grooves on its surface;

movable coupling means having a plurality of projections positioned to mesh with said plurality of grooves on said cylindrical element; and

means for supporting said coupling means and translating movement of said coupling means to an encoder,

wherein said grooves are comprised of a first set of grooves which are annular with respect to an axis of said cylindrical element, and a second set of grooves which are longitudinal with respect to said axis,

wherein said movable coupling means comprises a plurality of coupling elements positioned to mesh with said plurality of grooves such that at least one of said coupling elements is positioned for movement with rotation of said cylindrical element,

wherein at least one other of said coupling elements is positioned for movement as said cylindrical element is longitudinally moved, and

wherein said first set of grooves intersects said second set of grooves to form a grid pattern on said cylindrical element.

8. A structure for generating control signals in response to tactile inputs comprising:

a support member having a guide;

an elongated bar positioned on and longitudinally moveable along said guide;

an elongated cylindrical member rotatably mounted on said elongated bar, said cylindrical member having a plurality of longitudinal grooves on its surface;

a first coupling element having a plurality of projections positioned by said support member to mesh with said plurality of grooves on said cylindrical member;

detection means for detecting movement of said elongated bar; and

means for translating movement of said first coupling element and said detection means to a first and second encoder, respectively.

9. The structure of claim 8 wherein said support member is positioned for contact with a force-operable transducer, ad deflection of said support member causing contact with said transducer produces a signal output.

10. The structure of claim 9 further including:

a switch bar depressibly coupled to said support member; and

a switch positioned on said support member and intermediate said switch bar and said support member;

wherein a predetermined pressure on said switch activates said switch.

11. The structure of claim 8 further including:

a base plate depressibly supporting said support member; and

a first force-operable transducer positioned on said base plate such that a first predetermined pressure on said cylindrical member, said elongated bar, or said support member produces a first signal output.

16. The structure of claim 8 further including:

a servomotor coupled to said cylindrical member such that movement of said cylindrical member is modified in response to changes in a feedback signal.

18. The structure of claim 8 further including:

first means coupled to said cylindrical member for imparting to said cylindrical member, in response to a given signal applied to said first means, a first selected force; and

second means coupled to said elongated bar for imparting to said elongated bar, in response to a given signal applied to said second means, a second selected force.

12. A structure for generating control signals in response to tactile inputs comprising:

a support member having a guide;

an elongated bar positioned on and longitudinally moveable along said guide;

an elongated cylindrical member rotatably mounted on said elongated bar, said cylindrical member having a plurality of longitudinal grooves on its surface;

a first coupling element having a plurality of projections positioned by said support member to mesh with said plurality of grooves on said cylindrical member;

detection means for detecting movement of said elongated bar;

means for translating movement of said first coupling element and said detection means to a first and second encoder, respectively;

a base plate depressibly supporting said support member;

a first force-operable transducer positioned on said base plate such that a first predetermined pressure on said cylindrical member, said elongated bar, or said support member produces a first signal output;

a switch bar coupled to said base plate adjacent a first side of said base plate, said base plate depressibly supporting said support member on an opposite side of said first side of said base plate; and

a second force-operable transducer positioned such that a second predetermined pressure on said switch bar produces a second signal output.

20. A control mechanism comprising:

means for guiding;

a cylindrical element mounted on said means for guiding for rotational and longitudinal movement relative to said means for guiding, said cylindrical element including an integrally formed first coupling means having a plurality of projections;

a second coupling means having a plurality of grooves on its surface positioned to mesh with said plurality of projections of said first coupling element; and

means for supporting said second coupling element and translating movement of said second coupling element to an encoder.