Electroadhesives system isolation in apparel
An electrode device for an electroadhesive clutch can include a planar conductive member and a housing that encloses at least a portion of the conductive member. In an example, the housing can include a flexible polymeric substrate provided adjacent to at least a first surface of the conductive member, and a dielectric member comprising a first portion provided adjacent to an opposite second surface of the conductive member, and a second portion provided adjacent to a first side edge of the conducive member and coupled to the flexible polymeric substrate.
1 . A wearable article, comprising:
a material formed to be worn on a body of a wearer;
an electrode device, positioned on the material such that a portion of the electroadhesive device may contact a body part of a wearer of the wearable article, the electrode device configured to operate as part of an electroadhesive clutch, the electrode device comprising:
a planar conductive member configured to electrically engage with a remote conductive member of the electroadhesive clutch to permit or inhibit a first portion of the material to move relative to a second portion of the material; and
a housing that encloses at least a portion of the conductive member and provides electrical isolation between the planar conductive member and the body part of the wearer, wherein the housing includes:
a flexible polymeric substrate provided adjacent to at least a first surface of the conductive member; and
a dielectric member comprising a first portion provided adjacent to an opposite second surface of the conductive member, and a second portion provided adjacent to a first side edge of the conductive member and coupled to the flexible polymeric substrate.
2 . The wearable article of claim 1 , wherein the dielectric member comprises a third portion provided adjacent to a second side edge, opposite to the first side edge, of the conductive member and coupled to the flexible polymeric substrate.
3 . The wearable article of claim 1 , wherein the polymeric substrate is coupled to the first side edge of the conductive member.
4 . The wearable article of claim 1 , wherein the planar conductive member comprises a metal deposited on the polymeric substrate, and wherein the dielectric member comprises a substantially non-electrically-conductive material deposited on the metal.
5 . The wearable article of claim 1 , wherein the dielectric member comprises an elastic dielectric ink having an electrical permittivity that is greater than the permittivity of air.
6 . The wearable article of claim 1 , wherein a thickness of the dielectric member adjacent to the first surface of the conductive member is less than about 30 micrometers.
7 . The wearable article of claim 1 , wherein the housing includes a conductive pass-through provided in a portion of the polymeric substrate or the dielectric member, and wherein the housing is configured to hermetically isolate the conductive member.
8 . The wearable article of claim 1 , wherein the dielectric member comprises a flexible dielectric material.
9 . The wearable article of claim 1 , further comprising a smoothing agent provided on the dielectric member-side of the housing, wherein the smoothing agent is configured to reduce a coefficient of friction characteristic of the housing.
10 . The wearable article of claim 1 , wherein the housing and the conductive member are flexible.
11 . A wearable article, comprising:
a material formed to be worn on a body of a wearer; and
an electrode device, positioned on the material such that a portion of the electroadhesive device may contact a body part of a wearer of the wearable article, the electrode device configured to operate as part of an electroadhesive clutch, the electrode device comprising:
a flexible substrate;
an electrically-conductive first trace disposed on the flexible substrate and configured to electrically engage with a remote conductive member of the electroadhesive clutch to permit or inhibit a first portion of the material to move relative to a second portion of the material, the first trace having a height, a width, and a length; and
a dielectric member disposed on the conductive trace opposite the flexible substrate, wherein at least a portion of the dielectric member extends over a side edge of the first trace and is coupled with the flexible substrate and provides electrical isolation between the first trace and the body part of the wearer.
12 . The wearable article of claim 11 , wherein the flexible substrate comprises a thin-film polymeric substrate.
13 . The wearable article of claim 11 , wherein the dielectric member extends over multiple sides of and encapsulates at least a portion of the first trace against the flexible substrate.
14 . The wearable article of claim 13 , further comprising a conductive passthrough electrically coupled to an external clutch signal driver and to the first trace, wherein the conductive passthrough provides an electrical signal path through the flexible substrate or through the dielectric member.
15 . The wearable article of claim 11 , wherein the dielectric member comprises a dielectric ink deposited on the first trace and on a surface of the flexible substrate.
16 . The wearable article of claim 11 , wherein the dielectric member comprises a dielectric polymer printed on the first trace and on a surface of the flexible substrate.
17 . The wearable article of claim 11 , wherein a permittivity of the dielectric member is greater than the permittivity of air.
18 . The wearable article of claim 11 , wherein a permittivity of the dielectric member is less than the permittivity of air.
19 . The wearable article of claim 11 , wherein a thickness of the dielectric member adjacent to the first trace is less than about 30 micrometers.
20 . The wearable article of claim 11 , further comprising a polymeric smoothing agent provided on the dielectric member opposite the first trace.