Pressure detection sensor and pressure detection insole including same

Patent metadata

Field	Value
Publication number	US-2019289951-A1
Application number	US-201716302589-A
Country	US
Kind code	A1
Filing date	May 23, 2017
Priority date	May 23, 2016
Publication date	Sep 26, 2019
Grant date	—

Abstract

Disclosed in an embodiment is a pressure detection sensor comprising: an elastic layer including a hole; and an electrode layer including a plurality of electrodes arranged on the elastic layer so as to be spaced apart, wherein the elastic layer includes a variable member arranged in the hole, the plurality of electrodes are electrically connected to each other by outside pressure, and at least one of the plurality of electrodes covers a part of the hole.

First claim

1 . A pressure detecting sensor comprising:
an elastic layer comprising a hole; and an electrode layer comprising a plurality of electrodes which are arranged to be spaced apart on the elastic layer, wherein the elastic layer comprises a variable member disposed in the hole, wherein the plurality of electrodes are electrically connected by an external pressure, wherein at least one of the plurality of electrodes covers a part of the hole, wherein the variable member comprises a conductive compound, and wherein resistance of the variable member changes due to a change in a thickness of the variable member.

2 . The pressure detecting sensor of claim 1 , wherein a top surface of the variable member has a step from a top surface of the elastic layer.

3 . The pressure detecting sensor of claim 1 , wherein an area in which the plurality of electrodes come into contact with a top surface of the elastic layer is smaller than an area of bottom surfaces of the plurality of electrodes.

4 . The pressure detecting sensor of claim 1 , wherein the plurality of electrodes comprise:
a first electrode; and a second electrode which is disposed to be spaced apart from the first electrode and has a different polarity from that of the first electrode.

5 . The pressure detecting sensor of claim 4 , wherein the first electrode and the second electrode comprise conductive fibers, and
wherein the conductive fibers are metal wires or fibers coated with metal films on surfaces thereof.

6 . The pressure detecting sensor of claim 1 , comprising an adhesive layer disposed in an area of the electrode layer except an area in which the hole is formed.

7 . The pressure detecting sensor of claim 1 , comprising an adhesive member disposed to surround the variable member.

8 . The pressure detecting sensor of claim 1 , wherein the elastic layer comprises a plurality of layers.

9 . The pressure detecting sensor of claim 1 , wherein the variable member connects the plurality of electrodes disposed to be spaced apart by the external pressure.

10 . (canceled)

11 . The pressure detecting sensor of claim 1 , wherein the variable member comprises an elastic body, and
wherein the elastic body comprises a conductive compound.

12 . The pressure detecting sensor of claim 11 , wherein the elastic body comprises one selected from the group consisting of a fiber material having a random arrangement such as foam, non-woven fabric, a nanoweb and the like, polyurethane, nylon, polyethylene terephthalate, and polyester.

13 . The pressure detecting sensor of claim 11 , wherein the conductive compound has 1 wt % to 10 wt % of the elastic body.

14 . The pressure detecting sensor of claim 11 , wherein the conductive compound comprises conductive polymers and conductive powder, and
wherein a diameter of the conductive powder is 10 nm to 500 μm.

15 . The pressure detecting sensor of claim 1 , wherein a top surface of the first variable member is disposed above a top surface of the first elastic layer, and
wherein a bottom surface of the first variable member is disposed below a bottom surface of the first elastic layer.

16 . The pressure detecting sensor of claim 1 , wherein a top surface of the first variable member is disposed below a top surface of the first elastic layer.

17 . The pressure detecting sensor of claim 1 , further comprising an adhesive layer disposed between the elastic layer and the plurality of electrodes.

18 . The pressure detecting sensor of claim 17 , wherein an area in which the plurality of electrodes come into contact with a top surface of the adhesive layer is smaller than an area of bottom surfaces of the plurality of electrodes.

19 . The pressure detecting sensor of claim 1 , wherein the plurality of electrodes are arranged to face one another.

20 . The pressure detecting sensor of claim 19 , wherein the elastic layer is disposed between the plurality of electrodes.

21 . A pressure detecting insole comprising:
a plurality of pressure detecting sensors; and a connector portion connected to the plurality of pressure detecting sensors, wherein each of the pressure detecting sensors comprises: an elastic layer comprising a hole; and an electrode layer comprising a plurality of electrodes arranged to be spaced apart on the elastic layer, wherein the elastic layer comprises a variable member disposed in the hole, wherein the plurality of electrodes are electrically connected by an external pressure, wherein at least one of the plurality of electrodes covers a part of the hole, and wherein the variable member comprises a conductive compound such that resistance of the variable member is changed due to a change in a thickness of the variable member.

Assignees

• Lg Innotek Co Ltd

Inventors

• Jo Hyun Jin
• Cho Won Keun
• Kim Jeong Han
• Lee Soo Min
• Lee Ji Na
• Cho In Hee
• Ju Sang A

Classifications

• G01L1/205

  using distributed sensing elements · CPC title

• G01L9/0051

  using variations in ohmic resistance · CPC title

• G01L1/22

  using resistance strain gauges · CPC title

• A43B17/006 Primary

  multilayered · CPC title

• H01B1/02

  mainly consisting of metals or alloys · CPC title