JP2018146428A - Pressure sensor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pressure sensor with a new structure having softness capable of following the deformation of a measurement object and realizing excellent durability and reliability with a simple structure.SOLUTION: A pressure sensor 10 detects an operating pressure toward a deformable measurement object 38, and is oppositely disposed with first and second bases 20, 22 so as to oppose each other by nipping a replicated part 18 with a sheet-like substrate 12 folded back by the replicated part 18. First and second electrodes 14, 16 disposed in opposed inner surfaces of the first and second bases 20, 22 are oppositely disposed by nipping an elastic intermediate layer 28 and thus, a deformable pressure detection part 32 is configured by following the measurement object 38, whereas at least one of first and second wire lines 24, 26 connected to the first and second electrodes 14, 16 is folded back and turned over by the replicated part 18, and the end parts of the first and second wire lines 24, 26 are located on the same surfaces of the first or the second bases 20, 22, and a bending regulation part 30 for holding the replicated part 18 in a curved shape is provided.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a pressure sensor that detects pressure acting on the surface of a deformable measuring object.

  Conventionally, pressure sensors that detect pressure acting on the surface of a measurement object are known. As a sensor for detecting such a pressure, for example, there is a surface pressure distribution sensor disclosed in Japanese Patent Application Laid-Open No. 2004-317403 (Patent Document 1).

  By the way, the surface pressure distribution sensor of Patent Document 1 is applied to a device for detecting the imprint of a cellular phone or a seal stamp, and can be understood from a structure including a wiring or an insulating film on a glass substrate. Further, only the surface of a hard member that is not deformed is assumed as the pressure measurement surface.

  However, for example, in order to determine the quality of cardiopulmonary resuscitation (CPR) by chest compression, only a hard measurement object that does not deform is assumed when the pressure acting on the chest is detected by a pressure sensor. However, it is difficult to effectively measure the pressure with the surface pressure distribution sensor of Patent Document 1.

  Further, in the structure shown in FIG. 2 of Patent Document 1, it is necessary to form electrodes, wirings, insulating films, etc. on a plurality of substrates, respectively, and there is a problem in that the structure is complicated and the number of manufacturing processes is increased accordingly. There was a risk of becoming. In addition, there is a possibility that the end of the wiring connected to other members (for example, a power supply, a control device, etc.) is arranged on the facing inner surface of each substrate, and the connection structure becomes complicated.

  FIG. 6 of Patent Document 1 shows that a surface pressure distribution sensor can be configured by forming electrodes, wirings, insulating films, and the like on one film and bending the film. . However, if the film is simply bent as in Patent Document 1, the film itself may be damaged at the bent portion, or the wiring formed across the bent portion may be broken.

JP 2004-317403 A

  The present invention has been made in the background of the above-mentioned circumstances, and its solution is a flexible structure that can follow the deformation of the measurement object, but has excellent durability with a simple structure with a small number of parts. It is another object of the present invention to provide a pressure sensor having a novel structure capable of realizing high reliability.

  Hereinafter, the aspect of this invention made | formed in order to solve such a subject is described. In addition, the component employ | adopted in each aspect as described below is employable by arbitrary combinations as much as possible.

  In other words, a first aspect of the present invention is a pressure sensor that detects pressure acting on a measurement object that is superimposed on the surface of the measurement object that can be deformed, and has a sheet shape that has electrical insulation and flexibility. A flexible first electrode and a second electrode are formed on one surface of the substrate, and a bent portion is set on the substrate, and the substrate is bent at the bent portion. And both sides of the substrate sandwiching the bent portion are a first base portion and a second base portion that are arranged opposite to each other in the thickness direction in a bent state of the bent portion, and the first electrode The second electrode is disposed on the opposing inner surface of each of the first base and the second base, and the first electrode and the second electrode are electrically insulating and flexible. Detecting the pressure acting in the opposing direction of the first electrode and the second electrode, facing each other across the elastic intermediate layer While the force detection unit is configured by the opposed portions of the first electrode and the second electrode, the pressure detection unit can be deformed following the surface of the measurement object, while the first detection unit A first wiring electrically connected to the electrode and a second wiring electrically connected to the second electrode are formed on one surface of the base, and the first wiring and the second wiring Either one of the wires extends over the bent portion of the base body and is bent so that the front and back are reversed at the bent portion, opposite to the connection end of the first wire to the first electrode The end on the side and the end opposite to the connection end of the second wiring to the second electrode are either the first base portion or the second base portion, the opposing inner surface. And a bending restricting portion for preventing the bending portion from being bent and holding the bent portion in a curved shape. Steal, and features.

  According to the pressure sensor having the structure according to the first aspect as described above, the first and second electrodes and the first and second electrodes are formed on one surface of one base by bending the base at the bent portion. A pressure detection unit that detects pressure by making the first electrode connected to the first wiring and the second electrode connected to the second wiring face each other with a simple structure provided with the second wiring Can be configured.

  Furthermore, the end on the opposite side to the connection end to the first electrode in the first wiring and the end on the opposite side to the connection end to the second electrode in the second wiring are the surfaces on the same side of the substrate. Therefore, when a connector or the like is connected to the ends of the first and second wirings, the connection can be facilitated.

  In addition, since the base is provided with a bending restricting portion that prevents the bent portion from being bent and holds the bent portion in a curved shape, the base is folded when the base is bent at the bent portion. It is possible to prevent the wiring extending over the bent portion from being excessively bent at the bent portion and being damaged.

  The base, the first and second electrodes and the first and second wirings disposed on the base, and the elastic intermediate layer disposed between the first and second electrodes are all acceptable. The flexible member has flexibility, and the pressure detection unit of the pressure sensor has a flexible structure in which deformation is allowed. As a result, even when the pressure measurement target by the pressure sensor is flexible and deformable, the pressure detection unit deforms following the deformation of the measurement target, thereby accurately measuring the pressure acting on the measurement target. can do.

  According to a second aspect of the present invention, in the pressure sensor described in the first aspect, the first base portion including the bent portion in the base and the opposing portion of the second base portion are pressures in the measurement object. The pressure can act on the first base part including the bent part and the second base part facing each other to be measured. is there.

  According to the second aspect, the opposing portion of the first base and the second base including the bent portion follows the deformation of the measurement target due to the action of pressure, thereby stabilizing the pressure acting on the measurement target. Can be measured. In addition, even if the bent portion is arranged at the portion where the pressure acts, the bent portion is held in a curved shape by the bending restricting portion, so that the wiring extending over the bent portion of the base is bent. It is possible to prevent damage due to excessive bending at the portion.

  According to a third aspect of the present invention, in the pressure sensor described in the first or second aspect, the pressure sensor is overlapped along the surface of the chest of the rescued person who is the measurement target and compressed by the rescuer's chest compression. It is a pressure sensor for assisting CPR that assists cardiopulmonary resuscitation by detecting the pressure acting on the chest of the rescued person.

  According to the third aspect, the pressure detection unit that is flexible and can be deformed even in the chest of a rescued person (including a training doll) whose measurement target has a complicated surface shape and can be deformed. By using the pressure sensor according to the present invention, it is possible to accurately detect pressure due to chest compression. In particular, even when the rescuer's chest deforms greatly due to chest compression, the pressure detection unit can deform following the chest so that the pressure acting on the chest can be accurately detected. In addition, the rescuer can appropriately assist the cardiopulmonary resuscitation based on the pressure detection result.

  According to a fourth aspect of the present invention, in the pressure sensor described in any one of the first to third aspects, an elastic deformation amount in a direction in which the first electrode and the second electrode face each other is The first base portion and the second base portion are allowed to have a size of 200% with respect to the maximum length dimension in the surface direction of the portion where the first base portion and the second base portion are arranged to face each other.

  According to the fourth aspect, since the amount of bending deformation in the thickness direction allowed in the pressure detection region is increased, the pressure detection portion of the pressure sensor is deformed into a shape corresponding to the surface of the measurement target. In addition, it becomes easy to follow the deformation of the measurement object and easily deform, and the pressure acting on the measurement object can be accurately detected.

  According to a fifth aspect of the present invention, in the pressure sensor described in any one of the first to fourth aspects, the thickness of the elastic intermediate layer is 5 mm or less.

  According to the fifth aspect, since the thickness of the elastic intermediate layer is 5 mm or less, the distance between the opposing surfaces of the first electrode and the second electrode is sufficiently large in the initial state where no external force is applied. It becomes small and the change of the distance between the opposing surfaces of the 1st electrode and the 2nd electrode by the effect | action of a pressure can be detected electrically accurately. Moreover, since the elastic intermediate layer is thin, it is easy to realize excellent flexibility of the pressure detection unit, and it is possible to more advantageously realize stable pressure detection by deforming following the measurement object. .

  According to a sixth aspect of the present invention, in the pressure sensor described in any one of the first to fifth aspects, the bending restricting portion is harder than the base.

  According to the 6th aspect, the shape of the bending part in a base | substrate can be controlled more stably by the bending control part harder than a base | substrate.

  According to a seventh aspect of the present invention, in the pressure sensor described in any one of the first to sixth aspects, the bending restricting portion is provided so as to be distinguishable from the elastic intermediate layer. .

  According to the seventh aspect, by providing the bending restricting portion and the elastic intermediate layer in different distinguishable aspects such as thickness and material, for example, the bending restricting portion is made harder than the elastic intermediate layer, In addition, the setting of the bending shape of the bent portion by the hard bending restricting portion and the followability of the more flexible elastic intermediate layer to the measurement target can be realized at a high level.

  According to an eighth aspect of the present invention, in the pressure sensor described in the seventh aspect, the bending restricting portion is provided independently of the elastic intermediate layer.

  According to the eighth aspect, the shape and material suitable for the bending restricting portion and the elastic intermediate layer can be set separately, and the shape of the bent portion in the base body can be set more accurately by the hard bending restricting portion. The region in which the pressure is detected by the flexible elastic intermediate layer can be made to follow the measurement object more advantageously.

  According to a ninth aspect of the present invention, in the pressure sensor described in the seventh aspect, the bending restricting portion is provided integrally with the elastic intermediate layer.

  According to the ninth aspect, by integrating the bending restricting portion and the elastic intermediate layer, the number of parts can be reduced as compared with the case where the bending restricting portion and the elastic intermediate layer are separated. .

  According to a tenth aspect of the present invention, in the pressure sensor described in any one of the first to ninth aspects, the first base portion and the second base portion in a portion where the bending restricting portion is disposed. And the distance between the opposing surfaces of the first base and the second base in the portion where the elastic intermediate layer is disposed are different from each other.

  According to the tenth aspect, for example, when the distance between the opposing surfaces of the first base portion and the second base portion is smaller than the portion where the elastic intermediate layer is disposed in the portion where the bending restricting portion is disposed. In the pressure sensor, the portion where the bending restricting portion is disposed is thinner than the portion where the elastic intermediate layer is disposed, so that the bending restricting portion is less susceptible to external force to be detected, and pressure is detected by elastic deformation of the elastic intermediate layer. Is realized with high accuracy.

  On the other hand, if the distance between the opposing surfaces of the first base and the second base is larger than the portion where the elastic intermediate layer is disposed in the portion where the bending restricting portion is disposed, the elastic intermediate layer is sufficiently It is possible to more effectively prevent the substrate from being bent excessively by the bending restricting portion while increasing the flexibility of the region where the pressure is detected as a thin wall.

  An eleventh aspect of the present invention is the pressure sensor described in any one of the first to tenth aspects, wherein the bending restricting portion is fixed to the base.

  According to the eleventh aspect, the bending restricting portion can be positioned at an appropriate position with respect to the substrate, and the bending restricting portion and the substrate can be handled integrally, so that the bending operation of the substrate can be performed. Etc. becomes easier.

  According to a twelfth aspect of the present invention, in the pressure sensor described in any one of the first to eleventh aspects, the bending restricting portion is provided to cover the entire surface of one of the bent portions. It is what.

  According to the twelfth aspect, since the bending restricting portion is provided in the entire bent portion, excessive bending of the base in the bent portion is more reliably prevented at the bending restricting portion. Improvement of the durability of the substrate can be realized stably and advantageously.

  According to a thirteenth aspect of the present invention, in the pressure sensor according to any one of the first to twelfth aspects, the bending restricting portion is separated from the base, and the first of the base is Between the base portion and the second base portion.

  According to the thirteenth aspect, by forming the bending restricting portion separately from the base body, it is possible to accurately set the size and shape of the bending restricting portion and to form the bending restricting portion. It is also possible to select the material with a large degree of freedom. It should be noted that the bending restricting portion may be partially positioned and fixed with respect to the base body for the purpose of preventing displacement and detachment during processing or use.

  A fourteenth aspect of the present invention is the pressure sensor according to any one of the first to thirteenth aspects, wherein the bending restricting portion is overlapped with a bending inner surface of the bending portion. A curved outer surface for holding the portion in a curved shape.

  According to the fourteenth aspect, the bending inner surface of the bending portion can be easily curved by providing the bending outer surface to the bending restricting portion so that the bending portion of the base body is aligned with the bending outer surface of the bending restricting portion. It can be.

  According to a fifteenth aspect of the present invention, in the pressure sensor described in any one of the first to fourteenth aspects, each of the first electrode and the second electrode is formed in a longitudinal belt shape. A plurality of portions are formed on one surface of the base body, and a plurality of cross-opposing portions of the first electrode and the second electrode are arranged to face each other with the elastic intermediate layer interposed therebetween, thereby constituting the pressure detection unit. It is what.

  According to the fifteenth aspect, a plurality of pressure detectors are two-dimensionally arranged to detect the distribution of pressure acting on the measurement target based on the pressure detection results of the plurality of pressure detectors. It becomes possible to do.

  According to a sixteenth aspect of the present invention, in the pressure sensor described in any one of the first to fifteenth aspects, the first electrode, the second electrode, the first wiring, and the first The second wiring is made of a material in which a conductive filler is dispersed in an elastic base material, and can be expanded and contracted.

  According to the sixteenth aspect, the first and second electrodes and the first and second electrodes disposed on the base body and the first and second wires can be expanded and contracted. And it becomes easy to bend | fold the 2nd wiring in the bending part of a base | substrate. In addition, when the base body or elastic intermediate layer is deformed by the action of an external force, the electrode and the wiring can be sufficiently deformed so that excellent flexibility and durability can be realized.

  According to a seventeenth aspect of the present invention, in the pressure sensor described in the sixteenth aspect, an electrical resistance value at the time of maximum extension deformation of the first electrode and the second electrode is 30 kΩ or less. Is.

  According to the seventeenth aspect, since the electrical resistance values of the first and second electrodes are set to be small, the pressure can be effectively detected by energizing the first and second electrodes. . In particular, since the electric resistance value at the time of maximum extension deformation of the first and second electrodes is 30 kΩ or less, the pressure can be effectively detected even in a deformed state of the flexible pressure sensor.

  According to an eighteenth aspect of the present invention, in the pressure sensor described in any one of the first to seventeenth aspects, the first wiring and the second wiring extending across the bent portion of the base body. An electrically insulating insulator layer is provided at least partially between the portion formed on the first base and the portion formed on the second base in at least one of the wirings. .

  According to the eighteenth aspect, since the insulator layer is provided between the wirings folded at the bent portion, a short circuit due to the overlapping of the folded wirings is prevented, and the pressure is reduced. Stable detection is realized.

  According to a nineteenth aspect of the present invention, in the pressure sensor described in the eighteenth aspect, the insulator layer and the elastic intermediate layer are integrally formed and fixed to the base.

  According to the nineteenth aspect, the structure can be simplified by integrating the insulator layer and the elastic intermediate layer disposed between the first base and the second base.

  According to the present invention, since the base is bent at the bent portion, the first and second electrodes and the first and second wirings are provided on one surface of one base. The first electrode connected to the first wiring and the second electrode connected to the second wiring are opposed to each other, and a pressure detecting unit capable of detecting the pressure acting in the facing direction of the electrodes is configured. be able to. Moreover, the end of the first wiring opposite to the connection end to the first electrode and the end of the second wiring opposite to the connection end to the second electrode are the first or second Since they are arranged on the same surface of the base, it is possible to easily connect a connector or the like to the ends of the first and second wirings. Furthermore, the base, the first and second electrodes and the first and second wirings disposed on the base, and the elastic intermediate layer disposed between the first and second electrodes are all flexible. Since the pressure detection area having the pressure detection unit has a flexible structure that is allowed to be deformed, the pressure detection area is flexible and can be deformed. By following and deforming, the pressure acting on the measurement object can be measured effectively.

The top view which shows the pressure sensor as 1st embodiment of this invention. It is a fragmentary sectional view which expands and shows the principal part of the pressure sensor shown in FIG. 1, Comprising: The figure corresponded in the II-II cross section of FIG. The top view shown in the unfolded state before bending the pressure sensor shown in FIG. 1 in a bending part. The top view which shows schematically the pressure sensor shown in FIG. 1 in the arrangement | positioning state to the chest of a training doll. The model figure explaining the deformation | transformation of the pressure sensor shown in FIG. The fragmentary sectional view which shows the principal part of the pressure sensor as another one Embodiment of this invention. The fragmentary sectional view which shows the principal part of the pressure sensor as another one Embodiment of this invention. The fragmentary sectional view which shows the principal part of the pressure sensor as 2nd embodiment of this invention. The fragmentary sectional view which shows the principal part of the pressure sensor as 3rd embodiment of this invention. The fragmentary sectional view which shows the principal part of the pressure sensor as 4th embodiment of this invention. The fragmentary sectional view which shows the principal part of the pressure sensor as 5th embodiment of this invention. The fragmentary sectional view which shows the principal part of the pressure sensor as 6th embodiment of this invention.

  Embodiments of the present invention will be described below with reference to the drawings.

  1 and 2 show a pressure sensor 10 as a first embodiment of the present invention. The pressure sensor 10 has a structure in which a first electrode 14 and a second electrode 16 are formed on one surface of a sheet-like substrate 12. In the following description, in principle, the vertical direction means the vertical direction in FIG. 1, and the horizontal direction means the horizontal direction in FIG. Since the pressure sensor 10 is thin, in the cross-sectional view of FIG. 2, the thickness dimension is shown larger than the vertical dimension and the horizontal dimension for ease of viewing, and a thin member (for example, , The first and second electrodes 14, 16, etc.) are particularly large in thickness.

  More specifically, the base 12 is a flexible sheet that is allowed to bend and stretch, and is formed of thin rubber, resin elastomer, or the like. In addition, as shown in FIGS. 1 to 3, the base body 12 is provided with a bent portion 18 that is deformed into a curved shape when the base body 12 is bent, and one side sandwiching the bent portion 18 is the first side. While being made into the base 20, the other side is made into the 2nd base 22. The bent portion 18 of the present embodiment has a predetermined width dimension in the left-right direction of the base 12 and extends linearly over the entire length in the vertical direction of the base 12. The right side of the bent portion 18 is a first base portion 20, and the left side of the bent portion 18 is a second base portion 22. Further, the left and right dimensions of the first base portion 20 are smaller than the left and right dimensions of the second base portion 22, and the left end portion of the second base portion 22 in a state in which the base 12 described later is bent at the bent portion 18. Is located on the left side of the first base 20.

  A first electrode 14 and a second electrode 16 are formed on one surface of the substrate 12. The first electrode 14 and the second electrode 16 are prepared by mixing a conductive filler such as carbon or metal powder with a flexible and elastically deformable elastic substrate formed of a polymer material such as rubber or resin elastomer, It is formed by molding a polymer material into a predetermined shape such as a belt shape, and is allowed to bend and stretch. In the present embodiment, as shown in FIG. 3, the first electrode 14 and the second electrode 16 are each formed in a longitudinal strip shape extending linearly, and the first electrode 14 is formed on the first base portion 20. The second electrode 16 is formed on the second base portion 22 and extends left and right. Furthermore, five first electrodes 14 are arranged in parallel on the left and right, while five second electrodes 16 are arranged in parallel on the top and bottom. Since the first electrode 14 and the second electrode 16 can be flexibly deformed, the electric resistance changes according to the amount of deformation. Preferably, the first electrode 14 and the second electrode 16 are maximized by bending deformation of the input unit 34 described later. The electrical resistance value is made to be 30 kΩ or less in the state of being stretched and deformed.

  In addition, the first wiring 24 is electrically connected to the first electrode 14, and the second wiring 26 is electrically connected to the second electrode 16. The first wiring 24 is formed on one surface of the base 12 by a stretchable polymer material mixed with the same conductive filler as the first electrode 14, and one end of the first electrode 14. The first electrode 14 extends from the portion with substantially the same width. On the other hand, the second wiring 26 is formed on one surface of the base 12 by the same stretchable material as that of the second electrode 16, and the second electrode 16 extends from one end of the second electrode 16. It extends with approximately the same width.

  Further, the first wiring 24 has a portion fixed to the first base portion 20 bent at a substantially right angle at an intermediate portion in the length direction and extending to the left, and the side opposite to the connection end to the first electrode 14 is The second electrode 16 and the second wiring 26 extend in the left-right direction substantially in parallel. Thereby, the first wiring 24 extends across the bent portion 18 of the base body 12 from side to side and is formed across both the first base portion 20 and the second base portion 22. On the other hand, the second wiring 26 extends from the second electrode 16 to the opposite side (left side) to the bent portion 18 and is formed on the second base portion 22 without straddling the bent portion 18. Note that the end of the first wiring 24 opposite to the connection end to the first electrode 14 and the end of the second wiring 26 opposite to the connection end to the second electrode 16 are both present. It is located at the left end on one surface of the second base 22. And the edge part of these 1st wiring 24 and the 2nd wiring 26 is connected to the connector 27, for example, and is electrically connected with the external power supply 40 and the control apparatus 42 which are mentioned later via the connector 27. The

  In addition, an insulating coating layer 28 is provided on one surface of the second base portion 22. The insulating coating layer 28 is a layer formed of rubber or resin elastomer having electrical insulating properties and flexibility, and both expansion and deformation are allowed. The insulating coating layer 28 is formed on one surface of the second base portion 22 on which the second electrode 16 and the first and second wirings 24 and 26 are formed, and is formed on the second base portion 22 of the base 12. The intermediate portion of the first wiring 24, the entire second electrode 16, and the end of the second wiring 26 on the second electrode 16 side are covered.

  In addition, the thickness dimension of the insulating coating layer 28 is set so that detection of pressure due to a change in capacitance is advantageously realized in the pressure detection unit 32 described later, and is preferably 5 mm or less, more preferably. Is 3 mm or less.

  Further, a bending restricting portion 30 is provided in the bent portion 18 in the base body 12. The bending restricting portion 30 is formed of rubber, resin elastomer, or the like, is an elastic body harder than the base 12, and has a substantially rectangular film shape or plate shape. The bent portion 18 is fixed so as to cover substantially the whole. Further, since the portion extending on the bent portion 18 in the first wiring 24 is covered with the bending restricting portion 30 at a position away from the insulating coating layer 28, the bending restricting portion 30 is electrically insulating. It is desirable that it is made of a material. In addition, the bending restricting portion 30 of the present embodiment extends to the upper and lower outer sides than the upper and lower ends of the base 12. It may be formed over. Note that the bending restricting portion 30 of the present embodiment is provided separately from the insulating coating layer 28 in the left-right direction, and is provided separately from the insulating coating layer 28 so that the insulating coating layer 28 is separated. It can be distinguished from the layer 28.

  The thickness dimension of the bending restricting portion 30 of the present embodiment is larger than the total thickness dimension of the base 12 and the first electrode 14 or the second electrode 16, and the thickness of the insulating coating layer 28. It is approximately half the size (see FIG. 2).

  The base body 12 having such a structure is bent in the thickness direction at the bent portion 18, and the first base portion 20 is superposed on one surface of the second base portion 22, and the first base portion is overlapped. 20 and the second base 22 face each other in the thickness direction. And the 1st electrode 14 and the 2nd electrode 16 which were formed in the opposing inner surface of the 1st base 20 and the 2nd base 22 are arranged so as to cross mutually oppose, and these 1st electrodes 14 are arranged. An insulating coating layer 28 is interposed between the second electrode 16 and the second electrode 16.

  As described above, the first electrode 14 and the second electrode 16 are arranged to face each other with the insulating coating layer 28 interposed therebetween, so that a capacitor is formed at the crossing facing portion of the first electrode 14 and the second electrode 16. Has been. And the pressure detection part 32 which detects the pressure which acts on the opposing direction of the 1st, 2nd electrodes 14 and 16 based on the change of an electrostatic capacitance is the crossing opposing of the 1st electrode 14 and the 2nd electrode 16. It is composed of partial capacitors.

  In the present embodiment, the five first electrodes 14 cross and oppose each of the five second electrodes 16 so that 25 pressure detectors 32 are arranged in upper and lower 5 rows × right and left 5 rows, The area where the 25 pressure detectors 32 are arranged is used as an input unit 34 on which a pressure to be detected is applied by being superimposed on a measurement target which will be described later. The base body 12, the first and second electrodes 14, 16 and the insulating coating layer 28 constituting the pressure detection unit 32 are all allowed to undergo expansion / contraction deformation or bending deformation, and the pressure detection unit 32 is subjected to expansion / contraction deformation or bending deformation. Therefore, the input unit 34 including the pressure detection unit 32 is also a flexible structure that is allowed to expand and contract. Specifically, it is desirable that the input unit 34 can be bent and deformed up to 200% of the maximum length dimension in the surface direction.

  The first and second electrodes 14 and 16 constituting the pressure detector 32 are electrically connected to a power source 40 and a control device 42 (described later) via the first and second wires 24 and 26. Has been. Then, by applying a predetermined detection current to each pressure detection unit 32 in a scanning manner, the pressure acting on each pressure detection unit 32 is detected based on a change in capacitance of each pressure detection unit 32. It has come to be.

  Further, since the base 12 is bent at the bent portion 18, the portion formed in the first base 20 and the portion formed in the second base 22 in the first wiring 24 are bent. Are bent so as to be reversed with respect to each other. And the part formed in the 1st base 20 in the 1st wiring 24 is distribute | arranged to the 2nd base 22 and the 2nd base 22 in the 1st base 20, and the 1st wiring 24 in the 1st wiring 24 A portion formed on the second base portion 22 is disposed on the inner surface side of the second base portion 22 facing the first base portion 20. Furthermore, the end of the first wiring 24 opposite to the connection end to the first electrode 14 and the end of the second wiring 26 opposite to the connection end to the second electrode 16 are the second end. The second base portion 22 is disposed on one surface of the second base portion 22 on the inner surface facing the first base portion 20 at a position away from the portion 35 facing the first base portion 20.

  Furthermore, the portion formed on the first base portion 20 and the portion formed on the second base portion 22 of the first wiring 24 are arranged to face each other with the insulating coating layer 28 interposed therebetween. By functioning as an insulator layer that prevents electrical short-circuiting, short-circuiting is prevented at the overlapping portion of the first wiring 24 by folding, and current flows in the length direction of the first wiring 24. ing.

  Further, the bending of the base 12 at the bent portion 18 is prevented by the bending restricting portion 30 provided at the bent portion 18 of the base 12. That is, the bending restricting portion 30 is arranged on the inner surface side of the base 12 that is bent (the opposite inner surface side of the first base portion 20 and the second base portion 22), and the bending restricting portion 30 is in the bent portion 18. By being sandwiched between the connection side to the first base portion 20 and the connection side to the second base portion 22, the angle at the bent portion 18 of the base 12 is increased, and the bent portion 18 is bent. It is held in a curved shape without a broken line by the restricting portion 30.

  In addition, in the present embodiment, the plate-shaped or sheet-shaped bending restricting portion 30 is fixed to the bent portion 18 of the base 12 and the periphery thereof, so that the bent portion 18 of the base 12 is bent. Accordingly, the bending restricting portion 30 is also bent. As shown in FIG. 2, the bent bending restricting portion 30 has an inner surface which is in contact with the upper and lower sides, and an outer surface on the bent portion 18 side is a curved outer surface 36 having a substantially semicircular arc cross section. . Since the curved outer surface 36 of the bending restricting portion 30 is fixed to one surface of the base 12, the base 12 is held in a curved shape along the curved outer surface 36 of the bending restricting portion 30 in the bent portion 18. Has been. In this embodiment, since the thickness dimension of the bending restricting portion 30 is substantially half of the thickness dimension of the insulating coating layer 28, the end portions in the width direction of the folded restricting portion 30 are overlapped with each other. As a result, the thickness is substantially the same as that of the insulating coating layer 28.

  The first base portion 20 and the second base portion 22 that are overlapped by bending the base 12 are desirably fixed to each other by means such as welding or adhesion. When the first base portion 20 and the second base portion 22 are fixed, the first and second electrodes 14 and 16 and the first and second wirings 24 and 26 are arranged so as not to affect the pressure detection. It is desirable to fix at a position away from the formation portion.

  As shown in FIG. 4, the pressure sensor 10 having such a structure is superimposed on the chest of the training doll 38 as a rescue target as a measurement target and acts on the chest of the training doll 38 by chest compression. It is used as a CPR auxiliary pressure sensor for detecting pressure. More specifically, the input portion 34 of the pressure sensor 10 is connected to the training doll 38 so that the appropriate position of the chest of the training doll 38 is compressed by pressing the central portion of the input portion 34 of the pressure sensor 10. It is superimposed in a state where it is positioned at an appropriate compression position in the chest. The chest of the training doll 38 imitates the chest of a human body, and is deformed by the action of pressure due to chest compression and restored to its original shape by releasing the pressure.

  The pressure sensor 10 may be set so that the input unit 34 is superimposed on the chest of the training doll 38, but preferably the first base 20 and the second base 22 are opposed to each other. The entire portion 35 is superimposed on the chest of the training doll 38, and the bent portion 18 constituting a part of the opposing portion 35 of the first base 20 and the second base 22 is also on the chest of the training doll 38. Arranged. Therefore, in the pressure sensor 10, the input portion 34 is set as a main action region of pressure, and pressure can be applied to the entire facing portion 35 of the first base portion 20 including the bent portion 18 and the second base portion 22. In an embodiment, the training doll 38 is set. In the present embodiment, as shown in FIG. 4, the entire base 12 of the pressure sensor 10 is disposed on the chest of the training doll 38.

  The means for positioning the pressure sensor 10 at an appropriate position on the chest of the training doll 38 is not particularly limited. For example, a cross or the like is drawn on the other surface of the first base 20, and the intersection of the crosses or the like. Is adjusted to the compression position of the chest of the training doll 38, lines and illustrations drawn on the other surface of the first base 20, and lines and illustrations drawn on the chest of the training doll 38 (rescued person) However, means such as positioning so as to correspond to each other can be considered. Further, when the measurement object is the training doll 38 as in the present embodiment, a positioning mark indicating an appropriate set position of the pressure sensor 10 (for example, a frame indicating the position of the entire pressure sensor 10 or a pressure sensor) 10) is drawn on the chest of the training doll 38, the pressure sensor 10 can be easily arranged at an appropriate position on the chest.

  Furthermore, as shown in FIG. 4, a power source 40 and a control device 42 are connected to the pressure sensor 10 via a connector 27. Further, the control device 42 connected to the pressure sensor 10 may be connected to output means such as a personal computer 44 by wire or wirelessly. For example, the pressure detection result of the pressure sensor 10 and the evaluation result thereof are personalized. It can also be displayed on the monitor of the computer 44. In addition, it can replace with the personal computer 44 and can employ | adopt a smart phone, a tablet, etc. as an output means. As an output method by the output means, in addition to displaying on the monitor, other methods such as sounding or vibrating according to the detection result can be adopted.

  Then, a training person (not shown) as a rescuer presses the chest of the training doll 38 on which the pressure sensor 10 is placed. As described above, since the input unit 34 of the pressure sensor 10 is positioned on the chest of the training doll 38, the trainer performs training by pressing the central portion of the input unit 34 of the pressure sensor 10. An appropriate position in the chest of the doll 38 can be pressed. When the practitioner presses the input part 34 of the pressure sensor 10, the insulating coating layer 28 of the pressure sensor 10 is compressed in the thickness direction, and the first electrode 14 and the second electrode 16 are relative to each other in the thickness direction. To approach. Thereby, since the electrostatic capacitance of each pressure detection part 32 changes, the pressure exerted on each pressure detection part 32 is detected based on the correlation of the electrostatic capacitance value set beforehand and working pressure.

  In the pressure sensor 10 according to the present embodiment, since the first electrode 14 and the second electrode 16 each having a plurality of longitudinal belts are formed to cross each other, the pressure detectors 32 are respectively configured. The pressure distribution acting on the input section 34 can be detected by detecting the pressure acting on the pressure detection section 32.

  Here, since the pressure sensor 10 is flexible and easily allows bending deformation and expansion / contraction deformation, the pressure sensor 10 is laid on the chest of the training doll 38 imitating the chest of the human body, so that the surface of the chest of the training doll 38 is covered. It is superimposed on the chest surface in a deformed state along the shape. Therefore, even when the chest of the training doll 38 having a complicated surface shape is a pressure measurement target, the pressure acting on the input unit 34 by chest compression can be accurately detected, and cardiopulmonary due to chest compression can be detected. With regard to resuscitation, it is possible to appropriately provide assistance during training by the practitioner or after training by evaluating the training content.

  Further, when the practitioner presses the chest of the training doll 38, the chest of the training doll 38 is deformed. However, the input unit 34 of the pressure sensor 10 is flexible enough to allow a large amount of flexure deformation and expansion / contraction deformation. Since it is structured, it can be deformed following the deformation of the chest of the training doll 38. Therefore, even if the training doll 38 that is deformed by chest compression is the measurement target, the magnitude of the pressure acting on the input unit 34 of the pressure sensor 10 during the compression, the distribution of the pressure acting on the input unit 34, and the like are accurately measured. Can be detected.

  Moreover, the pressure sensor 10 preferably has the first electrode 14 and the second electrode 16 in the main action region (input part 34) of the pressure in the facing portion 35 of the first base 20 and the second base 22. The deformation in the opposite direction (flexure deformation) is allowed up to 200% with respect to the maximum length dimension in the surface direction. That is, in the pressure sensor 10 of the present embodiment, as shown in FIG. 5, the input portion 34 provided in the facing portion 35 between the first base portion 20 and the second base portion 22 With respect to the diagonal length L (see FIG. 1), which is a length dimension, bending deformation of up to 200% is allowed in the opposing direction of the first electrode 14 and the second electrode 16. In this way, by allowing the deformation and expansion / contraction deformation of the pressure sensor 10 to be sufficiently large, the input unit 34 of the pressure sensor 10 deforms sufficiently following the deformation of the chest of the training doll 38, thereby compressing the sternum. The internal pressure can be detected effectively. In FIG. 5, the solid line and the two-dot chain line indicate the diagonal lines of the input part 34 provided at the opposing portions 35 of the first base 20 and the second base 22 in the pressure sensor 10, respectively. The two-dot chain line shows the maximum deformation state when the two-dot chain line is not deformed.

  Further, in the pressure sensor 10, the bending deformation at the facing portion 35 of the first base 20 and the second base 22 is from the center in the surface direction to the outer edge at the facing portion 35 of the first base 20 and the second base 22. It is desirable that up to 500% is allowed for the shortest distance. As a result, the input unit 34 of the pressure sensor 10 can be advantageously followed by the deformation of the chest of the training doll 38.

  Furthermore, in the pressure sensor 10, the thickness of the insulating coating layer 28 is preferably 5 mm or less, and more preferably 3 mm or less. Deformation of the layer 28 is easily allowed. Therefore, the flexibility of the input unit 34 including the pressure detection unit 32 can be easily realized, and the stable detection of pressure by the input unit 34 following the training doll 38 can be realized more advantageously. It becomes possible.

  In the present embodiment, the base 12 and the insulating coating layer 28 are not only made of rubber or resin elastomer and can be expanded and contracted, but also the first and second electrodes 14 and 16 and the first and second wirings 24. , 26 are made of an elastic conductive material in which a conductive filler is dispersed in an elastic base material such as rubber or resin elastomer, and can be expanded and contracted. Therefore, when the base 12 is deformed, the first and second electrodes 14 and 16 and the first and second wirings 24 and 26 can be deformed following the base 12, so that the first and second electrodes 14, 16 and the first and second wirings 24 and 26 are prevented from being damaged.

  In addition, since the electrical resistance value at the time of the maximum extension deformation of the first and second electrodes 14 and 16 is set small, the pressure is effectively detected by energizing the first and second electrodes 14 and 16. can do. In particular, since the electrical resistance value at the time of maximum extension deformation of the first and second electrodes 14 and 16 is 30 kΩ or less, the pressure can be detected effectively even when the flexible pressure sensor 10 is deformed. it can.

  Further, in the pressure sensor 10 of the present embodiment, the first and second electrodes 14 and 16 and the first and second electrodes are formed on one surface of one base 12 by bending the base 12 at the bent portion 18. The first electrode 14 connected to the first wiring 24 and the second electrode 16 connected to the second wiring 26 are opposed to each other by a simple structure provided with the second wirings 24 and 26. The pressure detection part 32 which detects this can be comprised.

  Furthermore, since the first electrode 14 and the second electrode 16 are arranged so as to cross each other by folding the base 12, the first wiring 24 is opposite to the connection end to the first electrode 14. The end and the end opposite to the connection end to the second electrode 16 in the second wiring 26 can be arranged on the same surface of the base 12. Therefore, when the connector 27 is connected to the ends of the first and second wirings 24 and 26 opposite to the first and second electrodes 14 and 16, the first and second wirings 24 and 26 are connected. And the connector 27 can be easily connected.

  In addition, since the base 12 is provided with a bending restricting portion 30 that prevents the bent portion 18 from being bent and holds the bent portion 18 in a curved shape, the base 12 is bent at the bent portion 18. At this time, the base 12 can be prevented from being damaged at the bent portion 18. In particular, in the present embodiment, since the bending restricting portion 30 is harder than the base body 12, the bending restricting portion 30 can more advantageously prevent the folding at the bent portion of the base body 12. In addition, since the bending restricting portion 30 of the present embodiment is provided so as to cover substantially the entire one surface of the bent portion 18, excessive bending of the base 12 at the bent portion 18 is bent. It is prevented more reliably by the restricting portion 30, and the improvement of the durability of the base 12 can be realized stably and advantageously.

  Furthermore, in this embodiment, since the bending restricting portion 30 is provided so as to be distinguishable independently from the insulating coating layer 28, different required characteristics of the bending restricting portion 30 and the insulating covering layer 28 are obtained. It becomes easy to realize both by changing the shape and material. For example, the training doll whose pressure is to be measured in the region (input unit 34) in which pressure is detected by the flexible insulating coating layer 28 while the shape of the bent portion 18 in the base 12 is set by the hard bending restricting portion 30. 38 surfaces can be followed more advantageously.

  Furthermore, in the pressure sensor 10, since the bending restricting portion 30 is fixed to the base 12, the bending restricting portion 30 is positioned at an appropriate position with respect to the base 12, and the bending restricting portion 30 and The substrate 12 can be handled integrally, and the bending work of the substrate 12 is facilitated.

  Further, when the base 12 is bent, the bending restricting portion 30 includes the curved outer surface 36, and if the base 12 is bent into a curved shape along the curved outer surface 36, the base 12 is bent at the bent portion 18. Excessive bending can be prevented, and damage to the substrate 12 due to bending can be prevented.

  In the present embodiment, the second electrode 16 is covered with the insulating coating layer 28, and a part of the first wiring 24 formed on the second base portion 22 is covered with the insulating coating layer 28. ing. Thereby, in the insulating coating layer 28, the portion covering the second electrode 16 constitutes an elastic intermediate layer functioning as a dielectric layer of each pressure detection unit 32, while the portion covering the first wiring 24 is an insulating layer. As a result, the insulating coating layer 28 causes an electrical short circuit between the fixing portion to the first base portion 20 and the fixing portion to the second base portion 22 in the first wiring 24 overlapped by folding the base 12. It is prevented. In particular, since the dielectric layer covering the second electrode 16 and the insulating layer covering the first wiring 24 are both made of an electrically insulating material, in this embodiment, the insulating layer 28 is integrated as an integral part. The structure is simpler than the case where the dielectric layer and the insulator layer are formed separately.

  In the first embodiment, in the state in which the base 12 is bent at the bent portion 18, the dimension in the thickness direction of the insulating coating layer 28 and the dimension in the same direction of the bent bending restricting portion 30, in other words, For example, the distance between the opposing surfaces of the first base portion 20 and the second base portion 22 in the portion where the insulating coating layer 28 is disposed, and the first base portion 20 and the second base portion 22 in the portion where the bending restricting portion 30 is disposed. The distances between the facing surfaces are substantially the same. Thereby, in the first embodiment, the thickness dimension of the input portion 34 in a state in which the base body 12 is bent is substantially the same in the portion where the insulating coating layer 28 is disposed and the portion where the bending restricting portion 30 is disposed. However, the thickness dimension of the input portion 34 in a state in which the base 12 is bent may be different between the portion where the insulating coating layer 28 is disposed and the portion where the bending restricting portion 30 is disposed.

  Specifically, as shown in FIG. 6, the thickness dimension of the bending restricting portion 30 is set to be larger than half the thickness dimension of the insulating coating layer 28, and the bending restricting portion 30 is formed together with the bending of the base body 12. By being bent, the distance between the opposing surfaces of the first base portion 20 and the second base portion 22 in the portion where the bending restricting portion 30 is disposed is equal to the first base portion 20 and the second base portion in the portion where the insulating coating layer 28 is disposed. The distance between the opposing surfaces of the base 22 may be larger. As described above, the thickness dimension of the input portion 34 is made larger at the portion where the bending restricting portion 30 is disposed than at the portion where the insulating coating layer 28 is disposed, so that the insulating coating layer 28 is made sufficiently thin and the input portion 34. In addition, the base 12 is excessively bent by making the shape of the bent portion 18 of the base 12 set by the bending restricting portion 30 into a curved shape having a larger curvature radius. It is also possible to more effectively prevent damage caused by the above.

  On the other hand, as shown in FIG. 7, the thickness of the bending restricting portion 30 is made smaller than half the thickness of the insulating coating layer 28, and the bending restricting portion 30 is bent together with the bending of the base body 12. Thus, the distance between the opposing surfaces of the first base portion 20 and the second base portion 22 in the portion where the bending restricting portion 30 is disposed is equal to the first base portion 20 and the second base portion 22 in the portion where the insulating coating layer 28 is disposed. The distance between the opposing surfaces may be smaller. As described above, the thickness of the input portion 34 is made smaller at the fixed portion of the bending restricting portion 30 than at the portion where the insulating coating layer 28 is disposed, so that the input portion 34 is disposed at the bending restricting portion 30. The pressure applied to the input unit 34 is accurately detected in the portion where the insulating coating layer 28 including the pressure detection unit 32 is disposed, and the bent portion 18 is excessively caused by the action of the external force. Can be prevented from breaking.

  FIG. 8 shows a part of a pressure sensor 50 as a second embodiment of the present invention. In the following description, members and portions that are substantially the same as those in the first embodiment are denoted by the same reference numerals in the drawings, and the description thereof is omitted.

  More specifically, the pressure sensor 50 has a structure in which a bending restricting portion 52 is provided in the bending portion 18 of the base 12. The bending restricting portion 52 is formed of the same material as that of the bending restricting portion 30 of the first embodiment, and has a substantially cylindrical shape. The bending restricting portion 52 of the present embodiment is formed separately from the base body 12 and is arranged without being fixed to the base body 12. Since the bending restricting portion 52 has a substantially cylindrical shape, the outer surface superimposed on the base 12 in the bent state of the base 12 is a curved outer surface 36 having a substantially arcuate cross section. Further, since the bending restricting portion 52 that is not fixed to the base 12 is positioned to some extent between the insulating coating layer 28 and the bent portion 18, excessive bending of the bent portion 18 is bent. It is effectively prevented by the restriction unit 52.

  According to the pressure sensor 50 having the structure according to this embodiment, the material and shape of the bending restricting portion 52 are set with a large degree of freedom by forming the bending restricting portion 52 separately from the base body 12. can do. Further, since the bending restricting portion 52 is arranged in a non-fixed manner with respect to the separate base body 12, excessive bending of the base body 12 is caused by the bending restricting portion 52 while allowing the base body 12 to be easily bent. Can be limited. In addition, in the present embodiment, the bending restricting portion 52 has a substantially cylindrical shape, and the outer peripheral surface of the bending restricting portion 52 is the curved outer surface 36 having a substantially arc-shaped cross section. By bending the portion 18 along the curved outer surface 36 of the bending restricting portion 52, the inner surface of the bent portion 18 can be easily curved.

  The bending restricting portion is preferably a flexible elastic body formed of rubber or resin elastomer, but the structure of the present embodiment employs a hard bending restricting portion formed of, for example, resin. You can also

  FIG. 9 shows a part of a pressure sensor 60 as a third embodiment of the present invention. In the pressure sensor 60 of the present embodiment, rod-shaped bending restricting portions 62 and 62 extending in the vertical direction (in the direction orthogonal to the paper surface in FIG. 9) with a substantially semicircular cross section are arranged on both sides of the center in the width direction of the bent portion 18 Are provided at an intermediate portion separated by a predetermined distance.

  When the base 12 is bent at the bent portion 18, the bending restricting portions 62 and 62 provided at the intermediate portion in the width direction of the bent portion 18 of the base 12 are brought into contact with each other. Thereby, the bending part 18 is hold | maintained in a curved shape, without being bent excessively.

  As can be understood from the structure of the pressure sensor 60 according to this embodiment, only one bending restricting portion is not necessarily provided, and a plurality of bending restricting portions may be provided. In particular, as in the present embodiment, by providing the plurality of bending restricting portions 62 and 62 at positions away from the central portion of the bent portion 18, the base body 12 can be bent easily at the bent portion 18.

  FIG. 10 shows a part of a pressure sensor 70 as a fourth embodiment of the present invention. In the pressure sensor 70 of the present embodiment, the surface of the base 12 on which the first and second electrodes and the first and second wirings are arranged is covered with the protective layer 72 over the entire surface. The bending restricting portion 74 is configured by the portion fixed to the bending portion 18 of the base 12. In the present embodiment, the separate insulating coating layer 28 is fixed to the surface of the protective layer 72, but a dielectric layer may be constituted by a part of the protective layer 72.

  When the base 12 is bent in the thickness direction at the bent portion 18, the bending restricting portion 74 formed of the protective layer 72 fixed to the bent portion 18 of the base 12 causes excessive bending of the bent portion 18. Bending is prevented, and the bent portion 18 is held in a curved shape at least in the central portion in the width direction.

  According to the pressure sensor 70 having the structure according to the present embodiment as described above, the protective layer 72 constituting the bending restricting portion 30 is continuously provided by including the entire region including the region where the bending portion 18 is removed from the base 12. The protective layer 72 is provided to prevent the substrate 12 from being excessively bent at the bent portion 18, and the first and second electrodes and the first and second electrodes fixed to the substrate 12 and the surface thereof. Wiring etc. can be protected.

  FIG. 11 shows a part of a pressure sensor 80 as a fifth embodiment of the present invention. In the pressure sensor 80 of the present embodiment, a band-shaped or square bar-shaped bending restricting portion 82 extending in the vertical direction (the direction orthogonal to the paper surface in FIG. 11) is provided at one end of the bent portion 18 in the width direction. Is provided. The bending restricting portion 82 is provided separately from the insulating coating layer 28 and has substantially the same thickness as the insulating coating layer 28.

  Then, when the base 12 is bent in the thickness direction at the bent portion 18, the bending restricting portion 82 provided at one end in the width direction of the bent portion 18 of the base 12 is the bent portion 18. Is brought into contact with the base 12 at the other end in the width direction. As a result, the intermediate portion in the width direction of the bent portion 18 (the right end portion in FIG. 11) is held in a curved shape without being excessively bent in a state of being separated from the bending restricting portion 82.

  As can be understood from the structure of the pressure sensor 80 according to the present embodiment, the bending restricting portion does not necessarily need to be provided so as to cover the entire bending portion 18, and the width direction end of the bending portion 18 is not necessarily provided. It may be partially provided in a part or the like.

  FIG. 12 shows a part of a pressure sensor 90 as a sixth embodiment of the present invention. In the pressure sensor 90 of this embodiment, the insulating coating layer 28 and the bending restricting portion 30 are integrally provided continuously. Note that the folding restricting portion 30 is formed with a thickness that is approximately half that of the insulating coating layer 28, and the integrally formed folding restricting portion 30 and the insulating covering layer 28 can be distinguished by the difference in thickness. It is said that.

  According to the pressure sensor 90 having the structure according to the present embodiment, the insulating coating layer 28 and the bending restricting portion 30 are integrally formed, thereby simplifying the structure by reducing the number of parts and reducing the number of processes. Facilitation of production can be achieved.

  As mentioned above, although embodiment of this invention was explained in full detail, this invention is not limited by the specific description. For example, although it is desirable that the bending restricting portion 30 is continuously provided over the entire length in the length direction of the bent portion 18, for example, a plurality are provided intermittently in the length direction of the bent portion 18. It may be done.

  Moreover, in the said embodiment, although only the 1st wiring 24 extended across the bending part 18 and illustrated the structure where only the 1st wiring 24 is bent, for example, the 1st wiring 24 and the 2nd Both of the wirings 26 may extend across the bent portion 18 and the first and second wirings 24 and 26 may be bent. In this case, for example, if the first wiring 24 is folded at one place and the second wiring 26 is folded at two places, a connector 27 for the first wiring 24 and the second wiring 26 is used. The connecting end can be disposed on the same side surface of the base 12.

  In the above embodiment, the elastic intermediate layer constituting the dielectric layer of the pressure detector 32 and the insulating layer that insulates the folded first wiring 24 are integrally formed as the insulating coating layer 28. The elastic intermediate layer and the insulator layer may be provided independently of each other.

  In addition, the first electrode 14 and the second electrode 16 do not necessarily need to cross each other in the orthogonal direction, but may extend in directions that are inclined to each other and cross each other. Furthermore, the first electrode 14 and the second electrode 16 are not necessarily limited to a mode in which the first electrode 14 and the second electrode 16 are formed in a longitudinal belt shape and cross each other. For example, the first electrode 14 and the second electrode 16 are polygons corresponding to the pressure detection unit 32. Alternatively, the shape may be a point such as a circle or a circle, and may be opposed to each other by bending the base 12.

  The number, arrangement, and the like of the pressure detectors 32 shown in the above embodiment are merely examples, and may be changed as appropriate according to the area and shape of the measurement target whose pressure is to be detected, the required pressure detection accuracy, and the like. obtain.

  In the above embodiment, the capacitance type pressure sensor has been exemplified. For example, an elastic intermediate layer is formed of conductive rubber in which a conductive filler is mixed with a rubber material, and the elastic intermediate layer is elastically deformed when a load is input. Thus, a resistance-type pressure sensor that detects the pressure based on the change in the electric resistance of the elastic intermediate layer can be provided.

  In the above-described embodiment, the case where the pressure sensor 10 according to the present invention is used for training for cardiopulmonary resuscitation has been described. However, the pressure sensor 10 is not limited to training, and is also used for actual lifesaving treatment for a rescued person. Can be. In this case, for example, when the cardiopulmonary resuscitation is performed, the rescuer or the like is notified in real time of the evaluation result of the cardiopulmonary resuscitation based on the pressure detection result, so that a more appropriate cardiopulmonary resuscitation is performed. Person can be urged to make corrections. The present invention is not necessarily applied only to the pressure sensor for assisting CPR, and the pressure measurement target by the pressure sensor according to the present invention is not limited to the rescuer's chest including the training doll 38.

10, 50, 60, 70, 80, 90: pressure sensor, 12: substrate, 14: first electrode, 16: second electrode, 18: bent portion, 20: first base, 22: second 24: First wiring, 26: Second wiring, 28: Insulation coating layer (elastic intermediate layer, insulator layer), 30, 52, 62, 74, 82: Bending restriction part, 32: Pressure Detection unit, 36: curved outer surface, 38: training doll (measurement target)

Claims (19)

A pressure sensor that is superimposed on a surface of a deformable measurement object and detects a pressure acting on the measurement object,
A flexible first electrode and a second electrode are formed on one surface of a sheet-like substrate having electrical insulation and flexibility, and a bent portion is set on the substrate. The base is bent at the bent portion, and a first base and a second base are disposed opposite to each other in the thickness direction in a bent state of the bent portion on both sides of the bent portion of the base. The first electrode and the second electrode are disposed on the opposing inner surfaces of each of the first base and the second base, and the first electrode and the second electrode. An electrode is disposed oppositely across an elastic intermediate layer having electrical insulation and flexibility, and a pressure detection unit that detects pressure acting in the opposing direction of the first electrode and the second electrode is the first of them. The pressure detection unit can be deformed following the surface of the object to be measured. While there,
A first wiring electrically connected to the first electrode and a second wiring electrically connected to the second electrode are formed on one surface of the substrate, and the first wiring And at least one of the second wiring extends over the bent portion of the base and is bent so that the front and back are reversed at the bent portion, and the connection of the first wiring to the first electrode The end opposite to the end and the end opposite to the connection end of the second wiring to the second electrode are either one of the first base and the second base. Disposed on the opposing inner surface,
A pressure sensor, wherein the bent portion of the base is provided with a bending restricting portion that prevents the bent portion from being bent and holds the bent portion in a curved shape.   The opposed portions of the first base portion and the second base portion including the bent portion in the base are overlapped with a portion that is deformed by the action of pressure in the measurement target, and the overlapped with the measurement target 2. The pressure sensor according to claim 1, wherein pressure can act on an opposing portion of the first base and the second base including a bent portion.   CPR assisting pressure for assisting cardiopulmonary resuscitation by detecting pressure acting on the chest of the rescuer by the chest compression of the rescuer superimposed on the surface of the chest of the rescuer to be measured The pressure sensor according to claim 1, wherein the pressure sensor is a sensor.   The amount of elastic deformation in the direction in which the first electrode and the second electrode face each other is larger than the maximum length in the surface direction of the portion where the first base and the second base are arranged to face each other. The pressure sensor according to any one of claims 1 to 3, which is allowed up to a size of 200%.   The pressure sensor according to any one of claims 1 to 4, wherein the elastic intermediate layer has a thickness of 5 mm or less.   The pressure sensor according to any one of claims 1 to 5, wherein the bending restricting portion is harder than the base.   The pressure sensor according to claim 1, wherein the bending restricting portion is provided so as to be distinguishable from the elastic intermediate layer.   The pressure sensor according to claim 7, wherein the bending restricting portion is provided independently of the elastic intermediate layer.   The pressure sensor according to claim 7, wherein the bending restricting portion is provided integrally with the elastic intermediate layer.   In a state in which the base body is bent, the thickness dimension of the bent portion where the bending restricting portion is arranged, and the opposing portion of the first base portion and the second base portion where the elastic intermediate layer is arranged The pressure sensor according to any one of claims 1 to 9, wherein the thickness dimensions of the sensors are different from each other.   The pressure sensor according to claim 1, wherein the bending restricting portion is fixed to the base body.   The pressure sensor according to claim 11, wherein the bending restricting portion is provided so as to cover the entire one surface of the bent portion.   The said bending control part is a different body from the said base | substrate, and is arrange | positioned by non-adhesion between the said 1st base part and said 2nd base part of this base | substrate. The described pressure sensor.   The pressure sensor as described in any one of Claims 1-13 provided with the curved outer surface which the said bending control part overlaps with the bending inner surface of the said bending part, and hold | maintains this bending part in a curved shape.   Each of the first electrode and the second electrode is formed in a longitudinal belt shape, and a plurality of each is formed on one surface of the base, and a plurality of crossing facing portions of the first electrode and the second electrode The pressure sensors according to any one of claims 1 to 14, wherein each of the pressure sensors is disposed so as to face each other with the elastic intermediate layer interposed therebetween.   2. The first electrode, the second electrode, the first wiring, and the second wiring are formed of a material in which a conductive filler is dispersed in an elastic base material, and can be expanded and contracted. The pressure sensor as described in any one of -15.   The pressure sensor according to claim 16, wherein the first electrode and the second electrode have an electric resistance value of 30 kΩ or less during maximum extension deformation.   Between the formation part on the first base and the formation part on the second base in at least one of the first wiring and the second wiring extending across the bent part of the base. The pressure sensor according to any one of claims 1 to 17, wherein an electrically insulating insulator layer is provided at least in part.   The pressure sensor according to claim 18, wherein the insulator layer and the elastic intermediate layer are integrally formed and fixed to the base.

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