Switches and Devices for Integrated Soft Component Systems

• US 20080105527A1
• Filed: 09/16/2005
• Published: 05/08/2008
• Est. Priority Date: 09/16/2004
• Status: Abandoned Application

• Current Assignee: Sentrix Technology Limited
• Original Assignee: Sentrix Technology Limited
• Inventors: Leftly, Steven Andrew
• Application Number:
  US11/663,053
• Publication Number:
  US 20080105527A1
• Time in Patent Office: Days
• US Class Current: 200/530
• CPC Class Codes: H01H 13/7006 comprising a separate movable contact element for each switch site, all other elements being integrated in layers
• CPC Class Codes: H01H 13/785 characterised by the material of the contacts, e.g. conductive polymers
• CPC Class Codes: H01H 2201/032 Conductive polymer; Rubber
• CPC Class Codes: H01H 2203/008 Wires
• CPC Class Codes: H01H 2203/0085 Layered switches integrated into garment, clothes or textile
• CPC Class Codes: H01H 2203/038 to be bridged by a dome shaped contact
• CPC Class Codes: H01H 2209/02 UV or light sensitive
• CPC Class Codes: H01H 2239/022 with opto-electronic switch
• CPC Class Codes: H01H 3/141 Cushion or mat switches

Abstract

Switches and devices suitable for use in soft articles such as textiles are provided, which can be used to create integrated soft component systems. According to one embodiment, a conductor carrier (2) containing two parallel electrically conductive tracks (1) is disposed adjacent to a flexible contact maker (4). The flexible contact maker (4) comprises an electrically conductive substrate. One of the electrically conductive tracks of the conductor carrier (2) is permanently attached to the flexible contact maker (4) at a contact point (6). The other electrically conductive track has a contact point (3). In an open configuration, the flexible contact maker (4) does not make electrical contact with the contact point (3). In a closed configuration, the contact maker does make contact with the contact point (3) and closes the circuit between the two electrically conductive tracks. The flexible contact maker may be resiliently biased in either or both of the open and closed configurations.

Claims

1. A switch for use in a soft article, such as a textile article, comprising:

a conductor carrier having a plurality of electrical conductors; and

a flexible contact maker comprising an electrically conductive substrate, the flexible contact maker being disposed adjacent to the conductor carrier;

wherein the contact maker is configurable in either a first configuration in which it electrically connects two of the electrical conductors or a second configuration in which it does not electrically connect two of the electrical conductors, the contact maker being resiliently biased in at least one of the first and second configurations.

2. A switch according to claim 1, wherein the contact maker forms part of a contact layer.

3. A switch according to claim 1, wherein the electrical conductors are electrically shielded from the contact maker except at exposed contact points.

4. A switch according to claim 3, wherein the contact maker is permanently connected to one of the electrical conductors at a contact point on that electrical conductor.

5. A switch according to claim 4, wherein the contact maker electrically connects to a contact point on another of the electrical conductors when the contact maker is in the first configuration.

6. A switch according to claim 3, wherein each of the electrical conductors has a contact point and the contact maker electrically connects to two of the contact points, each on a separate electrical conductor, in the first configuration.

7. A switch according to claim 1, wherein the electrically conductive substrate of the contact maker is an electrically conductive rubber.

8. A switch according to claim 1, wherein the contact maker has at least one concave recess.

9. A switch according to claim 8, wherein the at least one concave recess is mechanically deformable so as to cause the contact maker to be either in its first configuration or in its second configuration.

10. A switch according to claim 8, wherein a series of non-conductive nodules are formed on each concave-recess.

11. A switch according to claim 1, wherein the outer surface of the contact maker is bonded or stitched to a flexible film or fabric.

12. A switch according to claim 1, wherein the conductor carrier and the flexible contact maker conform to an uneven surface.

13. A switch according to claim 1, wherein the conductor carrier and the flexible contact maker are encapsulated in a polymer material.

14. A switch according to claim 1, further comprising at least one LED to provide visual feedback to a user.

15. A device for use in a soft article, such as a textile article, comprising:

a conductor carrier having a plurality of electrical conductors;

at least one contact maker mounted on the conductor carrier and physically attached to two of the electrical conductors; and

an outer layer covering the conductor carrier and the at least one contact maker;

wherein each contact maker is configurable to provide an electrical connection between the two electrical conductors to which it is physically attached, the electrical connection depending on a force exerted on the outer layer above the contact maker.

16. A device according to claim 15, wherein the electrical conductors are electrically shielded from the at least one contact maker except at exposed contact points at which they are attached to the at least one contact maker.

17. A device according to claim 15, wherein each contact maker is configurable in either a first configuration in which it electrically connects two of the electrical conductors or a second configuration in which it does not electrically connect two of the electrical conductors, the contact maker being resiliently biased in at least one of the first and second configurations.

18. A device according to claim 17, wherein each contact maker comprises an SMD tact switch.

19. A device according to claim 17, wherein each contact maker comprises an SOD tact switch mounted on a PCB.

20. A device according to claim 19, wherein a resistor is mounted on the PCB of each contact maker.

21. A device according to claim 15, wherein the outer layer has a hollow recess surrounding the contact maker.

22. A device according to claim 15, wherein the contact maker is a light sensitive component.

23. A device according to claim 22, wherein the outer layer has an opaque region above the light sensitive component.

24. A device according to claim 23, wherein when a force is exerted on the outer layer the amount of light reaching the light sensitive component decreases.

25. A device according to claim 24, wherein the resistance of the electrical connection between the two electrical conductors varies in dependence on the amount of light reaching the light sensitive component.

26. A device according to claim 25, wherein the resistance increases as the amount of light reaching the light sensitive component decreases.

27. A device according to claim 15, wherein the outer layer comprises an outer fabric layer and an inner polymer layer.

28. A device according to 15, wherein the device further comprises at least one LED for providing visual feedback to a user.

29. (canceled)

30. (canceled)