Shape-changing control panel button based on activation/deactivation

• US 7,858,891 B2
• Filed: 04/24/2006
• Issued: 12/28/2010
• Est. Priority Date: 04/24/2006
• Status: Active Grant

• Current Assignee: Volkswagen AG
• Original Assignee: Volkswagen Group Of America Incorporated (Volkswagen AG)
• Inventors: Strohband, Sven, Alessandrini, Philippe, Srinivasan, Venkat, Derse, Michael, Stoschek, Arne
• Primary Examiner(s): Harvey; James
• Assistant Examiner(s): GIRARDI, VANESSA MARY
• Application Number:
  US11/409,686
• Publication Number:
  US 20070247420A1
• Time in Patent Office: 1,709 Days
• Field of Search: 200/406, 337/3, 337/16, 337/27, 337/36, 337/66, 337/85, 337/333
• US Class Current: 200/406
• CPC Class Codes: H01H 13/84 characterised by ergonomic functions, e.g. for miniature keyboards; characterised by operational sensory functions, e.g. sound feedback legends H01H13/83
• CPC Class Codes: H01H 2209/08 with memory properties
• CPC Class Codes: H01H 2217/022 Part of keyboard not operable
• CPC Class Codes: H01H 2221/068 having a not operable condition
• CPC Class Codes: H01H 61/0107 making use of shape memory materials

Abstract

A button configuration includes a shape-changing button that has a central region and a peripheral region. The peripheral region encircles the central region and defines a surface plane. The shape-changing button has an active state and an inactive state. The central region of the button protrudes from the surface plane and provides a push button function when the button is in the active state. The central region of the button extends substantially in the surface plane and provides no push button function when the button is in the inactive state. A control panel having shape-changing buttons is also provided.

Claims

1. A button configuration comprising:

a vehicle console having a console surface;

a user-operable push button having a central region and a peripheral region, said peripheral region encircling said central region and defining a surface plane;

said central region of said user-operable push button and said peripheral region of said user-operable push button forming said console surface;

said user-operable push button having an active state and an inactive state;

said central region of said user-operable push button protruding from the surface plane such that said console surface forms a protrusion on said vehicle console when said user-operable push button is in the active state and said protrusion on said vehicle console provides a push button function; and

said central region of said user-operable push button extending substantially in said surface plane and providing no push button function when said user-operable push button is in the inactive state such that said console surface forms a substantially flat surface when said user-operable push button is in the inactive state.

2. The button configuration according to claim 1, wherein a continuous layer of a shape memory polymer forms said central region and said peripheral region of said user-operable push button.

3. The button configuration according to claim 1, wherein at least said central region of said user-operable push button includes a compliant mechanism having two stable states such that said central region of said user-operable push button forms a protrusion on the surface plane defined by said peripheral region when said user-operable push button is in the active state and said central region of said user-operable push button is substantially flat and level with said peripheral region of said user-operable push button when said user-operable push button is in the inactive state.

4. The button configuration according to claim 1, wherein:

at least said central portion of said user-operable push button includes a shape memory material;

said shape memory material exhibits a bistability such that said shape memory material forms a protrusion on said surface plane when said user-operable push button is in the active state; and

said shape memory material forms a substantially flat layer extending in the surface plane when said user-operable push button is in the inactive state.

5. The button configuration according to claim 4, wherein said shape memory material is a material selected from the group consisting of a shape memory polymer and a shape memory alloy.

6. The button configuration according to claim 4, wherein:

said shape memory material is a shape memory alloy thin film; and

a flexible material and said shape memory alloy thin film form a sandwich structure.

7. The button configuration according to claim 4, wherein:

said shape memory material is a shape memory alloy wire mesh; and

said shape memory alloy wire mesh is embedded in a flexible material.

8. The button configuration according to claim 7, wherein:

said shape memory alloy wire mesh has an ohmic resistance and is configured to be heated with an electric current flowing through said shape memory alloy wire mesh; and

said shape memory alloy wire mesh has a memory shape and deforms into the memory shape when heated to a given transformation temperature.

9. The button configuration according to claim 4, wherein said shape memory material is a shape memory polymer having a memory shape and said shape memory polymer deforms into the memory shape when heated to a given transformation temperature.

10. The button configuration according to claim 9, including an internal heating mechanism integrated with said shape memory polymer.

11. A vehicle control panel configuration, comprising:

a control panel including a user-operable push button, said control panel having a control panel surface;

said user-operable push button having a central region and a peripheral region, said peripheral region encircling said central region and defining a surface plane;

said central region of said user-operable push button and said peripheral region of said user-operable push button forming said control panel surface;

said user-operable push button having an active state and an inactive state;

said central region of said user-operable push button protruding from the surface plane such that said control panel surface forms a protrusion on said control panel when said user-operable push button is in the active state and said protrusion on said control panel provides a push button function; and

said central region of said user-operable push button extending substantially in said surface plane and providing no push button function when said user-operable push button is in the inactive state such that said control panel surface forms a substantially flat surface when said user-operable push button is in the inactive state.

12. The vehicle control panel configuration according to claim 11, wherein said control panel is provided on a vehicle interior component selected from the group consisting of a vehicle console, a door panel, a steering wheel and a dashboard.

13. The vehicle control panel configuration according to claim 11, including:

a display disposed adjacent to said user-operable push button; and

said display indicating a function of said user-operable push button when said user-operable push button is in the active state.

14. The vehicle control panel configuration according to claim 11, including:

a control unit operatively connected to said user-operable push button for selectively activating and deactivating said user-operable push button.

15. The vehicle control panel configuration according to claim 14, wherein said control unit is configured to activate said user-operable push button via a voice control.

16. The vehicle control panel configuration according to claim 14, wherein:

said control panel includes further user-operable push buttons having an active state and an inactive state; and

said control panel is configured to operate in a plurality of operating modes wherein a respective subset of said user-operable push buttons is activated when said control panel is in a respective one of the operating modes; and

a selection device is connected to said control unit for selecting the operating modes.

17. The vehicle control panel configuration according to claim 14, wherein:

said control panel includes further user-operable push buttons operatively connected to said control unit; and

said control unit selectively activates and deactivates said user-operable push buttons for controlling an electronic vehicle subsystem.

18. The vehicle control panel configuration according to claim 17, wherein said user-operable push buttons are configured to control an electronic vehicle subsystem selected from the group consisting of an audio system, a navigation system, a climate control system and a communications system.