JP2007256136A - Touch sensor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a touch sensor for surely and quickly detecting abutment against on an object. <P>SOLUTION: The touch sensor 10 comprises a first linear electrode 1; a second cylindrical electrode 2 for elastically deforming by external force due to the contact on the object, by involving the first electrode 1 via a support means having insulation; and a coupling member 3 coupled with the second electrode 2, by supporting the first electrode 1 from at least one direction as the support means. The touch sensor 10 outputs electrostatic capacity between the first electrode 1 and the second electrode 2 that changes due to the abutment of the object. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a touch sensor that detects contact of an object.

  Some buildings, vehicles such as railways and automobiles are equipped with an electric opening and closing device that automatically opens and closes a door using a motor or the like. During the closing operation of such an electric opening and closing device, for example, in the case of a single door, it is possible to sandwich some object between the door frame and the door, and in the case of a double door, between the door and the door. There is sex. In such a case, it is desirable for the electric opening / closing device to stop the door closing operation or to change to the door opening operation. Accordingly, there is a need for a sensor that detects object pinching and contact of an object that may be pinched with a door or door frame.

  Japanese Patent Application Laid-Open Publication No. 2005-228561, which is cited below, describes a code switch as such a sensor and a pressure sensing device using the code switch. This cord switch is arranged in a spiral shape in a longitudinal direction along the inner surface of a hollow insulating section made of restoring rubber or restoring ratio plastic so that at least two electrode wires are not in electrical contact with each other. It is. When a pressing force is applied to the cord switch, the hollow insulator is deformed and any two or more electrode wires come into contact with each other. The pressure sensing device detects the contact of the electrode wire based on a change in the resistance value between the electrode wires, the current value flowing through the electrode wire, and the like, and detects whether or not the pressing force is applied.

International Publication No. WO97 / 21235 pamphlet (pages 3-5, Fig. 1, Fig. 2-6)

  The code switch and the pressure sensing device described in Patent Document 1 can reliably detect pressurization with a simple configuration. However, for example, in the electric door opening and closing device as described above, it is difficult to detect contact of an object before it is caught. In other words, when the cord of the hollow insulator starts to be crushed by the pressing force, the contact of the object cannot be detected at the initial stage of pressurization because the electrode wire is not yet in contact.

  The present invention has been made in view of the above problems, and an object thereof is to provide a touch sensor that can detect contact of an object reliably and quickly.

  In order to achieve the above object, the touch sensor according to the present invention includes a linear first electrode and the first electrode via an insulating support means, and an external force caused by contact of an object. A cylindrical second electrode that is elastically deformed, and a connecting member that supports the first electrode from at least one direction and connects to the second electrode as the support means, and changes according to contact of the object. It is in the point which outputs the electrostatic capacitance between said 1st electrode and said 2nd electrode.

  According to this characteristic configuration, when the cylindrical second electrode is elastically deformed by an external force, the distance between the first electrode and the second electrode varies, and the capacitance between the two electrodes changes. Since the electrostatic capacitance between both electrodes is output via both electrodes, an external force applied to the touch sensor of the present invention is output as a change in electrostatic capacitance value. Therefore, the presence / absence of contact, the magnitude of external force due to contact, and the like can be determined based on the capacitance value and the amount of change.

In general, a sensor using a capacitance is used for applications such as non-contact detection. Non-contact detection is excellent in that it can be detected before an object comes into contact. On the other hand, there is a problem that it is easily influenced by other factors. For example, it is known that the capacitance changes due to water droplets caused by rain or the like. For this reason, there are problems such as poor detection accuracy and the need for correction processing according to the environment.
The touch sensor of the present invention uses a capacitance as a detection principle, but detects a mechanical change due to contact of an object as a change in the capacitance, and thus is not easily influenced by other factors. Therefore, reliable detection is possible.
In addition, since the change in the distance between the two electrodes is detected as a change in capacitance, the contact can be detected before the cord is crushed to the extent that the two electrode wires come into contact with each other. Therefore, contact can be detected more quickly.

In the touch sensor of the present invention, it is more preferable that the second electrode is connected to the ground and the first electrode is connected to the capacitance detection circuit. Here, the ground to which the second electrode is connected has the same potential as the ground of the capacitance detection circuit. If it connects in this way, the 2nd electrode which includes a 1st electrode will function as an excellent shield with respect to a 1st electrode. The touch sensor of the present invention is a long sensor as is apparent from having a first electrode on a line and a cylindrical second electrode. In general, such a long sensor acts as an antenna, receives radiation noise and is easily affected by it, and it is difficult to increase the output because the S / N ratio is deteriorated. However, if the connection is made as described above, the resistance to external radiation noise and the like is enhanced, and the detection reliability is improved.
In this case, the substantial signal output is borne by only the included first electrode, so that it has high resistance against water droplets due to rain or the like. Even if the second electrode side is affected by water droplets or the like, the influence is suppressed because it is connected to the ground.

  The cylindrical second electrode may be cylindrical. Since the capacitance changes evenly with respect to pressurization from multiple directions, a touch sensor that does not depend on directivity can be configured. On the contrary, the position of the first electrode can be easily changed even when directivity is intentionally provided.

  As described above, “the first linear electrode, the insulating support means for supporting the first electrode, and the first electrode included via the support means, and by the contact of the object It has a cylindrical second electrode that is elastically deformed by an external force, and outputs a capacitance between the first electrode and the second electrode that changes due to the contact of the object. With such a characteristic configuration, it is possible to provide a touch sensor that can detect contact of an object reliably and quickly.

In addition to this basic characteristic configuration, this characteristic configuration is characterized in that the supporting means is a connecting member that supports the first electrode from at least one direction and connects the second electrode.
The touch sensor according to the present invention further exhibits the following excellent effects by this configuration.

The touch sensor of the present invention is a long sensor as is apparent from having a first electrode on a line and a cylindrical second electrode. Therefore, it is often arranged along the site where contact is desired to be detected. That is, the touch sensor often comes into contact with a portion to be attached at least along one line along the longitudinal direction.
On the other hand, the position of the second member connected to the first electrode via the support means is the position where the sensitivity is most lowered. When the first electrode is supported from at least one direction, this position can be made to coincide with a position (attachment portion) that comes into contact with the detected object such as a door. Therefore, according to this characteristic configuration, it is possible to obtain a touch sensor having sensitivity to external forces from almost all directions except the mounting portion.

  Another feature of the touch sensor according to the present invention for achieving the above object is that the linear first electrode and the first electrode are included via an insulating support means, and the object is brought into contact with the touch sensor. A cylindrical second electrode that is elastically deformed by an external force, and a connecting member that supports the first electrode from three directions that are 180 degrees or more apart from each other as the support means, and that is connected to the second electrode. , And a capacitance between the first electrode and the second electrode that changes due to the contact of the object is output.

The touch sensor having this characteristic configuration includes, as basic characteristic configurations, a linear first electrode, an insulating support means for supporting the first electrode, and the first electrode via the support means. And a cylindrical second electrode which is encapsulated and elastically deformed by an external force caused by contact of an object.
In addition to this basic characteristic configuration, in this characteristic configuration, the support means supports the first electrode from three directions that are 180 degrees or more apart from each other, and connects to the second electrode. It is a member.
Since the operational effects on the basic characteristic configuration of the present invention are as described above, the operational effects on the additional characteristic configuration with respect to the basic characteristic configuration will be described below.

According to this characteristic configuration, the first electrode is supported from three directions where the farthest directions are 180 degrees or more, and is stably maintained at a substantially constant position inside the cylindrical second electrode. . The touch sensor outputs a capacitance according to the distance between the first electrode and the second electrode. Therefore, even if the second electrode is not elastically deformed, the capacitance may change if the position of the included first electrode varies. For example, when vibration or impact is applied to the touch sensor, such a change in the position of the first electrode may occur.
According to this characteristic configuration, since the position of the first electrode included in the second electrode is stabilized, it is possible to suppress a change in capacitance due to an external force that does not depend on contact, for example, vibration. As a result, accurate contact detection is possible.

  Here, if the support means is an elastic member, the support means is deformed and the distance between the first electrode and the second electrode changes even when an external force is applied from the direction in which the support means exists. Therefore, the touch sensor of the present invention can have sensitivity to external forces from almost all directions except for a position (attachment portion) that comes into contact with the detected object such as a door when the touch sensor is mounted. .

  Another feature of the touch sensor according to the present invention for achieving the above object is that a linear first electrode and the first electrode are included via an insulating support means so as to contact an object. A cylindrical second electrode that is elastically deformed by an external force due to the above, and an elastic member filled with an elastic material between the first electrode and the second electrode as the support means, and by the contact of the object It is in the point which outputs the electrostatic capacitance between said 1st electrode and said 2nd electrode which change.

The touch sensor having this characteristic configuration includes, as basic characteristic configurations, a linear first electrode, an insulating support means for supporting the first electrode, and the first electrode via the support means. And a cylindrical second electrode which is encapsulated and elastically deformed by an external force caused by contact of an object.
In addition to this basic characteristic configuration, this characteristic configuration is characterized in that the supporting means is an elastic member filled with an elastic material between the first electrode and the second electrode.
Since the operational effects on the basic characteristic configuration of the present invention are as described above, the operational effects on the additional characteristic configuration with respect to the basic characteristic configuration will be described below.

If the support means is an elastic member filled with an elastic material between the first electrode and the second electrode as in this characteristic configuration, the first electrode is positioned at a substantially constant position inside the cylindrical second electrode. Maintained stably. Furthermore, since the periphery of the first electrode is evenly covered, the sensitivity for detecting contact is not affected by the location of the support means. Therefore, the touch sensor of the present invention has equal sensitivity to external forces from almost all directions except for a position (attachment portion) that comes into contact with the detected object such as a door when the touch sensor is mounted. Can do.
In addition, since the position of the first electrode included in the second electrode is stabilized, a change in capacitance due to external force that does not depend on contact, such as vibration, can be further suppressed.

  The touch sensor according to the present invention for achieving the above object is supported by the first electrode being eccentric from the center in a cross section perpendicular to the longitudinal direction of the touch sensor, in addition to the above-described characteristic configurations. This is a characteristic configuration.

  According to this characteristic configuration, directivity can be given to the sensitivity of the touch sensor. That is, even when external forces having the same magnitude are applied, there is a difference in the magnitude of the capacitance obtained and the amount of change depending on the location. Therefore, it is possible to give weighting according to the direction and place where it is desired to detect, and it is possible to adjust the directivity and sensitivity according to the attachment place.

Hereinafter, embodiments of a touch sensor according to the present invention will be described with reference to the drawings.
The touch sensor of the present invention can be used for detecting the pinching of other objects in an opening / closing part of a device that opens and closes like a sliding door or an automatic door of a building. Hereinafter, an embodiment of the present invention will be described by taking as an example a case where the touch sensor of the present invention is applied to a pinch detection device for a sliding door of an automobile.
The opening / closing part of the device to be opened / closed includes, for example, an exit / retreat part of an apparatus that moves between the storage place and the use place such as a seat ottoman device. That is, such an apparatus is one in which either one is movable and has two opposing portions that come close to and come apart from each other including contact. The touch sensor of the present invention is disposed in at least one of these facing parts and can be used for detecting the pinching of another object between the facing parts. Moreover, it can be used also for the purpose of detecting the contact of another object with the facing portion before the contact.

  FIG. 1 is a perspective view showing an example in which the touch sensor 10 of the present invention is applied to a pinching detection device for a sliding door 20 of an automobile. This pinching detection device detects the pinching of another object between the door frame 22 and the door panel 21 by using the long touch sensor 10 disposed at the opening end of the door panel 21. And it detects that another object contact | abuts on the door panel 21 before reaching | pinching. In this example, the touch sensor 10 is provided at an opening end portion of the door panel 21 and is disposed inside a weather strip that ensures airtightness in the vehicle interior when the door is closed. Further, if the coating 4 described later is appropriate, the touch sensor 10 and the weather strip may be used together.

2 is a cross-sectional view taken along the line II-II in FIG. 1 according to the touch sensor of the present invention. The touch sensor 10 includes a linear first electrode 1, an insulating support means (coupling member 3) that supports the first electrode 1, and a cylindrical first electrode that includes the first electrode 1 via the support means. It has two electrodes 2 and a coating 4 covering the second electrode 2. In this example, the support means is a connecting member 3 that supports the first electrode 1 from at least one direction and connects to the second electrode 2.
In this example, the second electrode 2 has a cylindrical shape. As a result, the capacitance changes evenly with respect to pressurization from multiple directions, so that a touch sensor that does not depend on directivity can be configured. However, the shape of the second electrode 2 is not limited to this, and the cross section may be another shape such as an ellipse, a square, or a triangle.

The first electrode 1 and the second electrode 2 are made of, for example, conductive rubber, and the covering 4 and the connecting means 3 are made of an insulating resin material. The conductive rubber can be obtained by mixing a powder of a conductive material with rubber or an elastic resin material. A long touch sensor 10 can be obtained by molding using these materials.
Further, a conductor such as an electric wire may be incorporated in one or both of the first electrode 1 and the second electrode 2 in order to reduce electrical resistance in the longitudinal direction and improve conductivity. If the first electrode 1 is made of a metal wire, the second electrode 2 is made by winding a metal tape in a spiral shape, etc. so long as the elasticity of the second electrode 2 is not impaired, both electrodes are made of a conductor. Also good.

FIG. 3 is a cross-sectional view of the touch sensor 10 when the object 30 is sandwiched between the slide doors 20. The second electrode 2 is elastically deformed by an external force due to the contact of the object 30, and the distance between the first electrode 1 and the second electrode 2 changes. The touch sensor 10 outputs a capacitance between the first electrode 1 and the second electrode 2, and this capacitance changes due to the contact of the object 30. The pinch detection device determines whether or not the object 30 is in contact by detecting a change in the capacitance in an ECU (electronic control unit) described later.
For example, when the second electrode 2 is bent by the contact of the object 30 as shown in FIG. 3, the distance between the first electrode 1 and the second electrode 2 is shortened. Since the electrostatic capacity is inversely proportional to the distance between the two electrodes, the electrostatic capacity increases when the second electrode 2 is bent. The contact of the object 30 is detected by this change in capacitance.

  In addition, when external force becomes still stronger and the bending of the 2nd electrode 2 becomes large, the 2nd electrode 2 and the 1st electrode 1 may contact. Therefore, the ECU may be configured to detect the presence or absence of contact along with the change in capacitance.

  FIG. 4 is a block diagram schematically illustrating a configuration example of the pinch detection device. In this example, the pinch detection device includes the touch sensor 10 and the ECU 8. The ECU 8 controls the motor 24 that drives the door panel 21 by determining whether or not the object 30 is in contact based on the capacitance C <b> 1 output from the touch sensor 10. The ECU 8 includes various electronic circuits with a microcomputer as a core. By these electronic circuits, at least the capacity detection means 5, the determination means 6, and the control means 7 are configured in the ECU 8.

  FIG. 5 is a block diagram schematically illustrating another configuration example of the pinch detection device. The configuration shown in FIG. 5 is different from the configuration shown in FIG. 4 in that the second electrode 2 of the touch sensor 10 is connected to the ground and only the first electrode 1 is connected to the ECU 8 as an output terminal. The ground of the ECU 8 and the ground to which the second electrode 2 is connected are naturally at the same potential. Therefore, it is equivalent to both the first electrode 1 and the second electrode 2 being input to the ECU 8, and the ECU 8 controls the motor 24 based on the capacitance C1 between both electrodes.

  In addition, a long sensor such as the touch sensor 10 of the present invention easily acts as an antenna. Therefore, the detected capacitance C1 is likely to be affected by external noise such as radiation noise. In the configuration example shown in FIG. 5, the output terminal is only the first electrode 1. The second electrode 2 including the first electrode 1 and connected to the ground functions as a shield that protects the first electrode 1 from external noise. Therefore, the resistance to external noise is increased and the detection reliability is improved.

  Hereinafter, the configuration and control example of the pinch detection device of FIGS. 4 and 5 will be described using the flowchart of FIG.

The capacity detection means 5 included in the ECU 8 detects the electrostatic capacity C1 between the first electrode 1 and the second electrode 2 of the touch sensor 10. The capacitance detection unit 5 detects the capacitance C1 at a predetermined time interval, for example, and transmits the value to the determination unit 6. The capacitance C1 is transmitted to the determination means 6 in the form of a voltage value, for example.
Alternatively, the capacitance detection means 6 may detect the amount of change and transmit it to the determination means 6 when there is a change in the capacitance C1.
In addition, the capacity | capacitance detection means 5 detects that external force became still stronger as mentioned above, the bending of the 2nd electrode 2 became large, and the 2nd electrode 2 and the 1st electrode 1 contacted. When the capacitance detection means 5 converts the capacitance C1 into a voltage value and transmits it to the determination means 6, the voltage value becomes zero if the first electrode 1 and the second electrode 2 come into contact with each other. Therefore, the capacitance detection means 5 can detect the contact of both electrodes with substantially the same configuration as the capacitance detection.

The judging means 6 determines whether or not the capacitance C1 has changed based on the received capacitance C1 (or change amount), that is, whether or not the capacitance C1 has changed beyond a predetermined change amount. Is determined (# 1 in FIG. 6). The determination means 6 determines that “there is pinching (contact)” if there is a change in capacity (# 2 in FIG. 6), and if there is no change in capacity, it determines that “no pinching (contact)”. (Fig. 6 # 4).
In addition to the determination based on the change amount of the capacitance C1, the determination unit 6 may use the presence / absence of contact between both electrodes as a determination criterion. When both electrodes are in contact, it is clear that the second electrode 2 is greatly bent. Accordingly, it is conceivable that the contact state has already passed and the pinch state has been reached, or the contact state has been strongly contacted. If the presence / absence of contact is taken into consideration in the determination criterion, the determination unit 6 can perform the determination together with the assumed contact and pinching state.

The control means 7 controls whether or not to continue the operation of the door panel 21 by the motor 24 based on the determination result of the determination means 6. If it is determined that there is “no pinching (contact)”, the normal operation of the slide door 20 is continued (# 5 in FIG. 6). If it is determined that “there is pinching (contact)”, for example, control such as stopping the motor 24, applying sudden braking, or driving in reverse is performed (# 3 in FIG. 6).
At this time, the control method may be varied according to the assumed result of the contact / clamping state by the determination means 6. For example, the motor 24 may be stopped if the contact is caused by a small external force, and the motor 24 may be driven reversely if the contact is caused by a large external force (such as a pinched state).

[Another embodiment]
The touch sensor 10 of the present invention can take various forms in addition to the configuration shown in FIGS. Hereinafter, another embodiment of the present invention will be described.

FIG. 7 is a modified cross-sectional view of FIG. 2 according to another configuration example 1 of the present invention. In this configuration, the support means is a connecting member 3 </ b> A that supports the first electrode 1 from three directions that are 180 degrees or more apart from each other and connects to the second electrode 2.
The touch sensor 10 outputs a capacitance C1 corresponding to the distance between the first electrode 1 and the second electrode 2. Therefore, even if the second electrode 2 is not elastically deformed, there is a possibility that a change occurs in the capacitance C1 when the position of the enclosed first electrode 1 changes. That is, vibrations or impacts applied to the touch sensor 10 may change the position of the first electrode 1. For example, the touch sensor 10 is disposed on the door panel 21, and vibration may occur when the door panel 21 moves on the door rail 23 (see FIG. 1). However, in the configuration shown in FIG. 7, the position of the first electrode 1 included in the second electrode 2 is stable. Therefore, a change in the capacitance C1 due to an external force such as vibration that does not depend on contact can be suppressed, and accurate contact detection can be performed.

  Here, the connecting member 3A is an elastic member. Accordingly, even when an external force from the direction in which the connecting member 3A exists is received, the connecting member 3A is elastically deformed and the distance between the first electrode 1 and the second electrode 2 changes. As a result, the touch sensor 10 is sensitive to external forces from almost all directions.

FIG. 8 is a modified cross-sectional view of FIG. 2 according to another configuration example 2 of the present invention. In this configuration, the supporting means is an elastic member 3 </ b> B in which an insulating elastic material (elastic foam) is filled between the first electrode 1 and the second electrode 2. When there is no load when no object is in contact with the touch sensor 10, the distance between the two electrodes is kept at rest, and when there is a load, the second electrode 2 is easily bent when an external force is applied from any direction.
Furthermore, as shown in the figure, when the second electrode 2 is cylindrical and the first electrode 1 is arranged at the center thereof, there is no directivity, and external force from any direction can be detected well. The touch sensor 10 that can be configured can be configured.

9 and 10 are modified sectional views of FIG. 2 showing still another configuration example of the touch sensor 10. In these configurations, the first electrode 1 is supported eccentrically from the center in a cross section orthogonal to the longitudinal direction of the touch sensor 10.
In the configuration example shown in FIG. 9, similarly to FIG. 7, there are three connection members 3 </ b> C (31, 32, 33) that are support means to support the first electrode 1, and to the cylindrical second electrode 2. Contains. As shown in the figure, at least one of the connecting members 31, 32, 33 has a different length from the other two. Therefore, the first electrode 1 is supported eccentrically from the center in the cross section of the cylindrical second electrode 2.
In the configuration example shown in FIG. 10, as in FIG. 8, the elastic member 3 </ b> B in which an insulating elastic material (elastic foam) is filled between the first electrode 1 and the second electrode 2 is the support means. . However, the first electrode 1 is supported eccentrically from the center in the cross section of the cylindrical second electrode 2.

If configured as shown in FIGS. 9 and 10, the touch sensor 10 can be configured to have directivity. For example, consider a case where the sliding door 20 is closed. After the door panel 21 slides on the door rail 23 in the front-rear direction of the vehicle, the door panel 21 is guided by the bent portion 23a (see FIG. 1) of the door rail 23 and moves inward in the vehicle width direction to be in a completely closed state. When moving inward in the vehicle width direction, the distance between the door panel 21 and the door frame 22 is minimized. Therefore, it is particularly effective if the object 30 can be prevented from being pinched at this position or from being brought into contact with the door panel 21 with the possibility of being pinched.
In such a case, if the sensitivity of the touch sensor 10 has directivity, a difference occurs in the change in the capacitance C1 obtained even with the same external force, so that detection with weighting is possible. Become. For example, in the important direction, both electrodes are arranged so that a large change occurs in the capacitance C1 even with the same external force. Then, it becomes possible to quickly control the motor 24 even with a small external force.

As described above, according to the present invention, it is possible to provide a touch sensor that can detect contact of an object reliably and quickly.
In the above description, the touch sensor of the present invention has been described using an example in which the touch sensor is disposed on a sliding door of an automobile. However, the present invention is not limited to this and can be disposed in various devices.
For example, in the case of an automobile, it can be naturally applied to a power back door, an electric sunroof, an electric headrest, an electric seat, an electric operation step, a power window, an electric ottoman, and the like. Further, it can be disposed not only on the sliding door but also on the swing door. Moreover, it can arrange | position not only to a motor vehicle but to the automatic door (including a revolving door) of a building, the door of an elevator, the door of a railroad, etc.
Further, even a device that is not electrically driven, that is, a device that is manually opened / closed / retracted, can be used as a contact / pinch detection sensor for detecting and notifying a pinch.

The perspective view which shows the example which applied the touch sensor of this invention to the pinching detection apparatus of the sliding door of a motor vehicle II-II arrow sectional drawing of FIG. 1 which concerns on the touch sensor of this invention Cross section of the touch sensor when an object is caught in the sliding door Block diagram schematically showing a configuration example of a pinch detection device Block diagram schematically showing another configuration example of the pinch detection device Flow chart showing control example of sliding door 2 is a modified cross-sectional view of FIG. 2 according to another configuration example 1 of the present invention. FIG. 2 is a modified cross-sectional view of another configuration example 2 of the present invention. 2 is a modified cross-sectional view of FIG. 2 according to another configuration example 3 of the present invention. FIG. 2 is a modified cross-sectional view of another configuration example 4 of the present invention.

Explanation of symbols

1: First electrode 2: Second electrode 3, 31, 32, 33, 3A, 3C: connecting member (supporting means)
3B: Elastic foam (elastic member, support means)
10: Touch sensor 30: Object

Claims (4)

A linear first electrode;
A cylindrical second electrode that encloses the first electrode via an insulating support means, and is elastically deformed by an external force due to contact of an object;
As the support means, the first electrode is supported from at least one direction, and a connecting member that connects to the second electrode,
A touch sensor that outputs a capacitance between the first electrode and the second electrode, which is changed by contact of the object. A linear first electrode;
A cylindrical second electrode that encloses the first electrode via an insulating support means, and is elastically deformed by an external force due to contact of an object;
As the support means, a support member that supports the first electrode from three directions that are 180 degrees or more apart from each other and connects to the second electrode,
A touch sensor that outputs a capacitance between the first electrode and the second electrode, which is changed by contact of the object. A linear first electrode;
A cylindrical second electrode that encloses the first electrode via an insulating support means, and is elastically deformed by an external force due to contact of an object;
An elastic member filled with an elastic material between the first electrode and the second electrode as the support means;
A touch sensor that outputs a capacitance between the first electrode and the second electrode, which is changed by contact of the object.   The touch sensor according to any one of claims 1 to 3, wherein the first electrode is supported while being decentered from a center in a cross section orthogonal to a longitudinal direction of the touch sensor.

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