Pressure-sensitive suspension system for a haptic device

• US 10,275,032 B2
• Filed: 12/22/2016
• Issued: 04/30/2019
• Est. Priority Date: 12/22/2016
• Status: Active Grant

• Current Assignee: Immersion Corporation
• Original Assignee: Immersion Corporation
• Inventors: Olien, Neil, Khoshkava, Vahid
• Primary Examiner(s): Sherman, Stephen G
• Application Number:
  US15/389,351
• Publication Number:
  US 20180181200A1
• Time in Patent Office: 859 Days
• CPC Class Codes: C09D 11/52 Electrically conductive inks
• CPC Class Codes: G06F 2203/04105 Pressure sensors for measuring the pressure or force exerted on the touch surface without providing the touch position
• CPC Class Codes: G06F 3/016 Input arrangements with force or tactile feedback as computer generated output to the user
• CPC Class Codes: G06F 3/03547 Touch pads, in which fingers can move on a surface
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G06F 3/045 using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact

Abstract

Embodiments hereof are directed to a haptic device having a pressure-sensitive suspension system. The haptic device includes a housing, a touch surface component mounted to the housing to be movable relative thereto, and a haptic actuator for providing haptic feedback to the touch surface component. At least one suspension component is disposed between the touch surface component and the housing. The suspension component is formed from an elastomer and includes pressure-sensing particles integrated into the elastomer. The pressure-sensing particles are configured to sense pressure applied to the touch surface component.

Claims

1. A haptic device comprising:

a housing;

a touch surface component mounted to the housing to be movable relative thereto;

a haptic actuator coupled to and in contact with an underside of the touch surface component for providing haptic feedback to the touch surface component; and

at least one suspension component disposed between and in contact with the touch surface component and the housing, the suspension component being spaced apart and distinct from the haptic actuator, wherein the suspension component is formed from an elastomer and includes pressure-sensing particles integrated into the elastomer, the pressure-sensing particles being configured to sense pressure applied to the touch surface component.

2. The haptic device of claim 1, wherein the at least one suspension component couples the touch surface component and the housing together such that the touch surface component is movable relative to the housing and the haptic feedback includes moving the touch surface component relative to the housing.

3. The haptic device of claim 1, wherein the pressure-sensing particles are a conductive ink material.

4. The haptic device of claim 3, wherein the conductive ink material is printed onto a surface of the elastomer.

5. The haptic device of claim 1, wherein the pressure-sensing particles are suspended within the elastomer in a homogeneous mixture.

6. The haptic device of claim 1, further comprising:

a processor configured to receive a pressure signal from the pressure-sensing particles and also configured to output a haptic control signal to the haptic actuator in response to the pressure signal.

7. The haptic device of claim 1, wherein the touch surface component is one of a touchscreen and a touchpad.

8. The haptic device of claim 1, wherein the at least one suspension component is configured to limit movement between the touch surface component and the housing in at least a first direction while also being configured to allow movement of the touch surface component relative to the housing in a second direction.

9. A haptic device comprising:

a housing;

a touch surface component mounted to the housing to be movable relative thereto;

a haptic actuator coupled to and in contact with an underside of the touch surface component for moving the touch surface component relative to the housing and thereby provide a haptic feedback to the touch surface component;

at least one suspension component that couples together, and contacts, the touch surface component and housing such that the touch surface component is movable relative to the housing, the suspension component being spaced apart and distinct from the haptic actuator, wherein the suspension component is formed from an elastomer configured to limit movement between the touch surface component and the housing in at least a first direction while also being configured to avow movement of the touch surface component relative to the housing in a second direction and wherein the suspension component further includes pressure sensing particles integrated into the elastomer, the pressure-sensing particles being configured to sense pressure applied to the touch surface component; and

a processor configured to receive a pressure signal from the pressure-sensing particles and also configured to determine a location of the pressure applied on the touch surface component in response to the pressure signal and also configured to output a haptic control signal to the haptic actuator in response to the pressure signal.

10. The haptic device of claim 9, wherein the pressure-sensing particles are a conductive ink material.

11. The haptic device of claim 10, wherein the conductive ink material is printed onto a surface of the elastomer.

12. The haptic device of claim 9, wherein the pressure-sensing particles are suspended within the elastomer in a homogeneous mixture.

13. A compliant suspension system for a haptic device comprising:

a first body;

a second body mounted to the first body to be movable relative thereto;

a haptic actuator for moving the second body relative to the first body and thereby provide a haptic feedback to the second body, wherein the haptic actuator is coupled to and in contact with an underside of the second body; and

at least one suspension component disposed between and in contact with the first body and the second body, the suspension component being spaced apart and distinct from the haptic actuator, wherein the suspension component includes an elastomer element having pressure sensing particles integrated therewith, the pressure-sensing particles being configured to sense pressure applied to the second body.

14. The compliant suspension system of claim 13, wherein the pressure-sensing particles are a conductive ink material.

15. The compliant suspension system of claim 14, wherein the conductive ink material is printed onto a surface of the elastomer element.

16. The compliant suspension system of claim 13, wherein the pressure-sensing particles are suspended within the elastomer element in a homogeneous mixture.

17. The compliant suspension system of claim 13, further comprising:

a processor configured to receive a pressure signal from the pressure-sensing particles and also configured to output a haptic control signal to the haptic actuator in response to the pressure signal.

18. The compliant suspension system of claim 13, wherein the first body is a housing and the second body is one of a touchscreen and a touchpad.

19. The compliant suspension system of claim 13, wherein the suspension component is configured to allow movement between the first body and the second body in a first direction and to limit movement between the first body and the second body in at least a second direction.