JP2016081809A - Three-dimensional sensor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a three-dimensional sensor capable of properly using a first detector and a second detector provided therein.SOLUTION: A first detector 30 detects a change in the capacitance of at least a part of the rising area 18 of a film substrate 12, and a second detector 40 detects a change in the capacitance of at least a part of the top surface area 20 of the film substrate 12. Since the first detector 30 and second detector 40 detect a change in the capacitance of different surfaces, the first detector 30 and second detector 40 included in a three-dimensional sensor 10 can be easily used properly.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a three-dimensional sensor.

  The capacitance sensor described in Patent Document 1 includes a three-dimensionally formed film base material and a conductive circuit pattern layer that detects a change in capacitance. The circuit pattern layer includes an electrode for detecting a change in capacitance and a conductive line extending from the electrode.

JP 2010-267607 A

  A conventional electrostatic capacity sensor (three-dimensional sensor) has a three-dimensional shape that protrudes in a spherical shape from a plane portion. And the electrode (detection part) is formed in multiple numbers by the spherical part. In other words, one electrode (first detection unit) and the other electrode (second detection unit) are formed on the same spherical surface. For this reason, it is difficult to properly use one electrode and another electrode.

  The subject of this invention is to use properly the 1st detection part and the 2nd detection part with which the three-dimensional sensor was equipped.

  The three-dimensional sensor according to claim 1 of the present invention includes a film base having a flat portion, a rising region rising from the flat portion, and a protrusion including a top surface region located at a tip of the rising region. A first detector that detects a change in capacitance of at least a part of the rising region, and at least a part of the first detecting unit is formed in the top surface region. And a second detector that detects a change in capacitance of at least a part of the surface area.

  According to the said structure, a 1st detection part detects the change of the electrostatic capacitance of at least one part of the standing area of a film base material, and a 2nd detection part is at least one part of the top surface area | region of a film base material Detects changes in capacitance. Thus, since the first detection unit and the second detection unit detect a change in capacitance on different surfaces, the first detection unit and the second detection unit detect a change in capacitance on the same surface. Compared with the case where it does, the 1st detection part with which the three-dimensional sensor was equipped, and the 2nd detection part can be used properly easily.

  The three-dimensional sensor according to a second aspect of the present invention is the three-dimensional sensor according to the first aspect, wherein the three-dimensional sensor is formed on the flat surface portion of the film base, and ends are connected to the first detection unit and the second detection unit, respectively. A plurality of wirings arranged on the side of the film base on which the first detection unit and the second detection unit are formed, and protecting the first detection unit and the second detection unit It is characterized by providing.

  According to the said structure, the some wiring by which an edge part is each connected to the 1st detection part and the 2nd detection part is formed in the plane part of the film base material. As described above, the wiring is formed on the plane portion, so that the wiring can be formed using a metal material by a screen printing method.

  A three-dimensional sensor according to a third aspect of the present invention is the three-dimensional sensor according to the first or second aspect, wherein the protruding portion is formed with a recessed portion that is partially recessed, and the first detection portion and the second detection portion. At least one of the parts is arranged to detect a change in capacitance of the recess.

  According to the above configuration, at least one of the first detection unit and the second detection unit is arranged to detect a change in the capacitance of the recess. For this reason, when the several detection part is formed in the same surface shape, it can touch the detection part formed in the recessed part easily.

  According to the three-dimensional sensor of the present invention, the first detection unit and the second detection unit provided in the three-dimensional sensor can be easily used properly.

It is the perspective view which showed the three-dimensional sensor which concerns on 1st Embodiment of this invention. It is the perspective view which showed the three-dimensional sensor which concerns on 1st Embodiment of this invention. It is the disassembled perspective view which showed the three-dimensional sensor which concerns on 1st Embodiment of this invention. It is the top view showing the solid sensor concerning a 1st embodiment of the present invention. (A) (B) (C) (D) It is process drawing which showed each process of manufacturing the three-dimensional sensor which concerns on 1st Embodiment of this invention. It is the schematic block diagram which showed the three-dimensional sensor which concerns on 1st Embodiment of this invention, and the air conditioning system in which a three-dimensional sensor is used. It is the perspective view which showed the three-dimensional sensor which concerns on 2nd Embodiment of this invention.

<First Embodiment>
An example of the three-dimensional sensor according to the first embodiment of the present invention will be described with reference to FIGS. In the figure, the arrow H indicates the vertical direction of the component (vertical direction), the arrow L in the drawing indicates the front-rear direction of the component (horizontal direction), and the arrow W in the drawing indicates the width direction of the component (horizontal direction).

(overall structure)
The three-dimensional sensor 10 is a sensor that detects a change in capacitance by a self-capacitance method (self-capacitance method), and is connected to an air conditioning system 110 of a vehicle via a signal wiring 112 as shown in FIG. Yes. And using this three-dimensional sensor 10, the switching of the blowing mode which determines the air blower which blows off air from the several air blower provided in the vehicle interior, and per unit time blown from the air blower The amount of air is switched.

  The air conditioning system 110 also includes an amplifier 114 that amplifies the detection signal detected by the three-dimensional sensor 10 and a detection IC 116 that detects the amplified detection signal.

  FIG. 6 shows the display unit 100 of the air conditioning system 110. The upper part of the display unit 100 shows five blowing modes, and the lower part of the display unit 100 is blown out from the air outlet. The amount of air is shown.

  The blowout mode consists of the first mode in which the wind is applied to the upper and lower bodies, the second mode in which the wind is applied to the lower body and the windshield is fogged, the third mode in which the wind is applied to the lower body, and the fourth mode in which the wind is applied to the upper body. , And a fifth mode for removing windshield fogging. The display of the first mode, the second mode, the third mode, the fourth mode, and the fifth mode is shown in order from the left side of the display unit 100 in the figure. And the display of the blowing mode switched using the three-dimensional sensor 10 lights up in the display unit 100.

  In addition, the amount of air from the air outlet is displayed by a meter 102 that is a display simulating a level meter. The amount of air is indicated by “0” to “3”, where “0” is a state in which air is not blown out from the air outlet, and when the value increases, the amount of air blown out from the air outlet is reduced. It has come to increase.

(Main part configuration)
Next, the structure of the three-dimensional sensor 10 will be described.

  As shown in FIGS. 2 and 3, the three-dimensional sensor 10 is formed on the film base 12, the film base 12 formed in a three-dimensional shape, the first detection unit 30 formed on the film base 12, and the film base 12. The second detection unit 40 and the wiring 60 formed on the film base 12 are provided.

  Furthermore, the three-dimensional sensor 10 includes a protective film 80 as an example of a protective member that protects the first detection unit 30 and the second detection unit 40.

[Film substrate]
For example, the film base 12 is obtained by three-dimensionally molding a transparent polyethylene terephthalate (PET) film material having a thickness of 120 [μm].

  Specifically, as shown in FIG. 3, the film substrate 12 has a flat planar portion 14 whose plate surface faces in the up-down direction, and a protruding portion 16 that projects upward from the planar portion 14. Yes. Furthermore, the protrusion 16 has a rising area 18 that rises upward from the flat surface part 14 and a top surface area 20 that is located at the tip of the rising area 18 and whose plate surface faces in the vertical direction.

  The flat portion 14 has a length in the front-rear direction of the component that is longer than a length in the component width direction. The protruding portion 16 protrudes upward from the front side (left side in the figure) of the flat portion 14 in the front-rear direction of the component, and the horizontal section of the protruding portion 16 is circular. As a result, the top surface region 20 of the protruding portion 16 has a circular shape.

[First detector]
As an example, the first detection unit 30 forms carbon nanotubes (CNT: carbon nanotube) having a thickness of 0.1 [μm] on the back surface 12 </ b> A of the film substrate 12 (a surface facing the protective film 80 side described later). And obtained as a transparent member.

  Specifically, the first detection unit 30 is a member that detects a change in electrostatic capacitance in the rising region 18, and a plurality of first detection units 30 are formed at intervals along the circumferential direction of the rising region 18.

  Each first detection unit 30 is formed across the rising region 18 and the flat portion 14, and extends from the flat portion 14 toward the rising region 18. A portion on the distal end side of each first detection unit 30 is located in the rising region 18, and a portion on the proximal end side of each first detection unit 30 is located on the plane portion 14.

  In this configuration, the first detector 30 is used to switch the amount of air blown from the air outlet. The details of the switching operation will be described together with the operation described later.

(Second detector)
For example, the second detection unit 40 is obtained as a transparent member by forming carbon nanotubes having a thickness of 0.1 [μm] on the back surface 12 </ b> A of the film substrate 12.

  Specifically, the second detection unit 40 is a member that detects a change in capacitance in the top surface region 20. The second detection unit 40 detects a change in the capacitance of the central portion of the top surface region 20 and detects a change in the capacitance of the peripheral portion of the top surface region 20. And a detector 48. Four detectors 48 are formed at intervals along the periphery of the top surface region 20.

  The detection unit 42 includes a circular detection electrode 42 </ b> A disposed in a central portion of the top surface region 20, and an elongated linear conductive line 42 </ b> B that does not contribute to detection of a change in capacitance. One end of the conductive line 42 </ b> B is connected to the detection electrode 42 </ b> A, and the other end extends to the planar portion 14 via the rising region 18. Furthermore, the detection unit 42 is connected to the other end of the conductive line 42B, and has a connection portion 42C that is wider than the conductive line 42B.

  On the other hand, each detection unit 48 is arranged on the peripheral side of the top surface region 20 and does not contribute to detection of a change in capacitance, with the detection electrode 48A having a part of the circular detection electrode 42A cut out. And an elongated linear conductive line 48B. One end of the conductive line 48 </ b> B is connected to the detection electrode 48 </ b> A, and the other end extends to the planar portion 14 via the rising region 18. Furthermore, each detection part 48 is connected to the other end of the conductive line 48B, and has a connection part 48C wider than the conductive line 48B.

  In this configuration, the blowing mode is switched using the second detection unit 40. The details of the switching operation will be described together with the operation described later.

〔wiring〕
For example, the wiring 60 is obtained by forming a silver alloy (an example of a metal material) having a thickness of 3 [μm] on the back surface 12 </ b> A of the flat portion 14 of the film base 12.

  Specifically, as shown in FIG. 4, the wiring 60 includes a plurality of wirings 60 </ b> A extending from the first detection unit 30, a wiring 60 </ b> B extending from the detection unit 42 of the second detection unit 40, and the second detection unit 40. And a plurality of wirings 60 </ b> C extending from the detection unit 48.

  Each wiring 60 </ b> A has one end connected to the proximal end portion of the first detection unit 30, and the other end to the rear side (right side in the figure) edge in the front-rear direction of the part in the flat portion 14 of the film base 12. It extends. One end and the other end of the wiring 60A are wider than other portions.

  Further, the wiring 60B has one end connected to the connecting portion 42C of the detecting portion 42 and the other end extending to the rear edge in the front-rear direction of the part in the flat portion 14 of the film base 12. One end and the other end of the wiring 60B are wider than other portions.

  Furthermore, each wiring 60 </ b> C has one end connected to the connection part 48 </ b> C of the detection part 48, and the other end extending to the rear edge in the front-rear direction of the part in the flat part 14 of the film base 12. The one end and the other end of the wiring 60C are wider than other portions.

[Protective film]
For example, the protective film 80 is obtained by three-dimensionally molding a transparent polyethylene terephthalate film material having a thickness of 120 [μm]. And as FIG. 3 shows, the protective film 80 protects the 1st detection part 30 and the 2nd detection part 40 by overlapping the protective film 80 on the film base 12 from the back surface 12A side of the film base 12. It is supposed to be.

  Specifically, like the film substrate 12, the protective film 80 has a flat planar portion 84 whose plate surface faces in the up-down direction, and a protruding portion 86 that protrudes upward from the planar portion 84. Yes. Furthermore, the protruding portion 86 has a rising region 88 that rises upward from the flat surface portion 84 and a top surface region 90 that is located at the tip of the rising region 88 and whose plate surface faces in the vertical direction.

  In a state where the protective film 80 is overlaid on the film substrate 12, the flat portion 84 of the protective film 80 is cut out so that the other end of the wiring 60 is exposed to the outside. Except for this point, the planar portion 84 has the same shape as the planar portion 14.

  Further, in the state where the protective film 80 is overlaid on the film base material 12, the protruding portion 86 of the protective film 80 has a gap with the protruding portion 16 of the film base material 12 as shown in FIG. Further, the protrusion 16 is made smaller. In addition, in a state where the protective film 80 is overlaid on the film base 12, the flat portion 84 of the protective film 80 and the flat portion 14 of the film base 12 are bonded with an adhesive or the like.

[Others]
The three-dimensional sensor 10 has a prevention cover 96 (of FIG. 5D) that prevents the capacitance of the first detection unit 30 and the second detection unit 40 from changing due to the proximity of the dielectric to the flat surface part 14. 2).

(Production method)
Next, a method for manufacturing the three-dimensional sensor 10 will be described.

  First, as shown in FIG. 5A, the first detection unit 30 and the second detection unit 40 are formed on a planar PET film 120 having a carbon nanotube film formed on one side by using an etching method. Form.

  Next, as shown in FIG. 5B, the protrusion 16 is formed on the planar PET film 120 using a vacuum forming method, and further trimmed to a predetermined shape. The film base 12 in which the detection unit 30 and the second detection unit 40 are formed on the back surface 12A is obtained.

  Next, as illustrated in FIG. 5C, the wiring 60 is formed on the back surface 12 </ b> A of the flat portion 14 of the film base 12 using a screen printing method.

  Next, as shown in FIG. 5D, the protective film 80 is overlapped from the back surface 12A side of the film base 12, and the flat portion 14 of the film base 12 and the flat portion 84 of the protective film 80 are bonded with an adhesive ( Bonding is performed using a not shown) or the like. Thereby, the three-dimensional sensor 10 is manufactured.

  In this state, the other end of the wiring 60 of the three-dimensional sensor 10 is exposed to the outside, and the connector 112A connected to the end of the signal wiring 112 (see FIG. 6) is connected to the exposed other end of the wiring 60. The parts are electrically connected (see FIG. 2).

(Action / Effect)
Next, the operation of the three-dimensional sensor 10 will be described by a switching operation for switching the blowing mode of the air conditioning system 110 using the three-dimensional sensor 10 and a switching operation for switching the amount of air blown from the air outlet using the three-dimensional sensor 10. To do.

  As shown in FIG. 6, the three-dimensional sensor 10 is connected to an air conditioning system 110 of the vehicle via a signal wiring 112. In the initial state in which the amount of air from the air outlet and the air outlet is not switched using the three-dimensional sensor 10, the air outlet mode is the fourth mode (fourth from the left side in the figure) in which the wind is applied to the upper body. The amount of air is “0” where air is not blown out from the air outlet.

  When switching the blowing mode, as shown in FIG. 1, the user places the finger F1 (an example of a dielectric) on one of the detection electrode 42A and the plurality of detection electrodes 48A formed on the top surface region 20. ) Each detection electrode 42A, 48A corresponds to one of the blowing modes, and is switched to the blowing mode corresponding to the detection electrode 42A, 48A in which the finger F1 is close.

  Specifically, a voltage is applied to each detection electrode 42A, 48A from the voltage application means (not shown) via the signal wiring 112, and between each detection electrode 42A, 48A and the film substrate 12 is applied. Has an electric field. Here, the electric field generated between each of the detection electrodes 42A and 48A and the film base 12 is changed by bringing the fingertip F1 close thereto. As a result, the electrostatic capacitance (floating capacitance) stored between the detection electrodes 42A and 48A and the film substrate 12 changes, and this change is transmitted to the amplifier 114 via the signal wiring 112. This change is amplified by the amplifier 114 and detected by the detection IC 116 (see FIG. 6).

  Based on the detection signal detected by the detection IC 116, the mode is switched to the blowing mode corresponding to the detection electrodes 42A and 48A with which the finger F1 is close.

  On the other hand, when the amount of air blown from the air outlet is switched, as shown in FIG. 1, the user touches the first detection unit 30 formed in the rising region 18 with the finger F2 (dielectric). An example of a body) is brought close. Then, the finger F2 is moved clockwise (arrow A1 in the figure) or counterclockwise (arrow A2 in the figure) along the rising region 18.

  When the finger F2 approaches the two first detection units 30 by moving the finger F2 clockwise, the amount of air is changed from “0” to “1”. In addition, when the finger F2 comes close to the three first detection units 30 by moving the finger F2 clockwise, the amount of air is changed from “0” to “2”. Further, when the finger F2 approaches the four or more first detection units 30 by moving the finger F2 clockwise, the amount of air is changed from “0” to “3”. In this manner, the amount of air is switched so as to increase depending on the number of first detection units 30 that are close by moving the finger F2 clockwise.

  On the other hand, when the finger F2 approaches the two first detection units 30 by moving the finger F2 counterclockwise in the state where the air amount is “3”, the air amount is changed from “3” to “3”. 2 ”. Further, when the finger F2 approaches the three first detection units 30 by moving the finger F2 counterclockwise, the amount of air is changed from “3” to “1”. Further, when the finger F2 approaches the four or more first detection units 30 by moving the finger F2 counterclockwise, the amount of air is changed from “3” to “0”. In this manner, the amount of air is switched so as to decrease depending on the number of the first detection units 30 that are close by moving the finger F2 counterclockwise.

  The first detection unit 30 that is first touched by the finger F2 may be any first detection unit 30 among the plurality of first detection units 30, and moves the finger F2 clockwise along the rising region 18. Alternatively, the amount of air is switched by moving it counterclockwise.

  The procedure for detecting the proximity of the finger F2 to the first detection unit 30 is the same as the procedure for detecting the proximity of the finger F2 to the detection electrodes 42A and 48A.

  As described above, the first detection unit 30 detects a change in capacitance in the rising region 18 of the film base 12, and the second detection unit 40 detects static in the top surface region 20 of the film base 12. Detects changes in capacitance. Thus, in order for the first detection unit 30 and the second detection unit 40 to detect a change in capacitance on different surfaces, the first detection unit 30 and the second detection unit 40 have a capacitance on the same surface. Compared to the case of detecting the change, the first detection unit 30 and the second detection unit 40 provided in the three-dimensional sensor 10 can be easily used properly. Note that different surfaces are surfaces that cannot be expressed with the same definition (for example, the same formula).

  The first detection unit 30 and the second detection unit 40 are formed on the back surface 12 </ b> A of the film base 12. For this reason, compared with the case where the 1st detection part 30 and the 2nd detection part 40 are formed in the outer surface of the film base material 12, the damage of the 1st detection part 30 and the 2nd detection part 40 is suppressed. be able to.

  Further, the protective film 80 is overlaid on the film base 12 from the back surface 12A side of the film base 12, and the protective film 80 is overlaid on the film base 12 to protect the protrusions 16 of the film base 12 and the protective film 80. A gap is formed between the protruding portion 86 of the film 80. Thereby, the part which detects the change of an electrostatic capacitance in the 1st detection part 30 and the 2nd detection part 40 can be protected.

  The wiring 60 is disposed on the flat portion 14 of the film base 12. For this reason, the silver alloy wiring 60 can be formed using a screen printing method.

  Further, the use of a silver alloy for the wiring 60 can suppress the wiring 60 from being damaged.

Second Embodiment
Next, an example of the three-dimensional sensor according to the second embodiment of the present invention will be described with reference to FIG. In addition, about the same member as 1st Embodiment, the same code | symbol is attached | subjected, the description is abbreviate | omitted, and a different part from 1st Embodiment is mainly demonstrated.

  In the rising region 138 of the film substrate 132 of the three-dimensional sensor 130 according to the second embodiment, a plurality of concave recesses 150 are formed at intervals in the circumferential direction. And the 1st detection part 30 is formed in each recessed part 150. FIG.

  As described above, when the user moves the finger F2 along the rising region 138 by forming the first detection unit 30 in the recess 150, the user can determine how many first detection units 30 the finger F2 has. Can be easily recognized.

  Although the present invention has been described in detail with respect to specific embodiments, the present invention is not limited to such embodiments, and various other embodiments can be taken within the scope of the present invention. This will be apparent to those skilled in the art. For example, in the first and second embodiments, a plurality of first detection units 30 are formed, but one first detection unit 30 may be provided. Similarly, although the plurality of second detection units 40 are formed, one second detection unit 40 may be provided.

  Moreover, in the said 1st, 2nd embodiment, although the 1st detection part 30 and the 2nd detection part 40 were formed with the carbon nanotube, you may form with another conductive material (for example, conductive ink).

  Moreover, in the said 1st, 2nd embodiment, although the wiring 60 was formed with the silver alloy, you may form with another material.

  In the second embodiment, the recess 150 is formed in the rising region 138 of the film base 132. However, a recess is formed in the top surface region 140 of the film base 132, and a detection electrode is formed in the recess. May be.

  In the first and second embodiments, the three-dimensional sensors 10 and 130 are used to operate the air conditioning system 110 of the vehicle. However, the three-dimensional sensors 10 and 130 may be used to operate other devices.

DESCRIPTION OF SYMBOLS 10 3D sensor 12 Film base material 12A Back surface 14 Flat surface part 16 Protrusion part 18 Standing area | region 20 Top surface area | region 30 1st detection part 40 2nd detection part 60 Wiring 80 Protective film (an example of a protection member)
130 Three-dimensional sensor 132 Film substrate 138 Rising region 140 Top surface region 150 Concave portion

Claims (3)

A film substrate having a flat surface portion, a rising region rising from the flat surface portion, and a protrusion including a top surface region located at a tip of the rising region;
A first detector that is formed in at least a portion of the rising region and detects a change in capacitance of at least a portion of the rising region;
A second detector that is formed in at least a portion of the top surface region and detects a change in capacitance of at least a portion of the top surface region;
A three-dimensional sensor comprising: A plurality of wires that are formed on the flat surface portion of the film base and whose end portions are respectively connected to the first detection portion and the second detection portion;
A protective member that is disposed on a side of the film base where the first detection unit and the second detection unit are formed, and that protects the first detection unit and the second detection unit;
The three-dimensional sensor according to claim 1, comprising:   The protruding portion is formed with a recessed portion that is partially recessed, and at least one of the first detecting portion and the second detecting portion is disposed so as to detect a change in capacitance of the recessed portion. Item 3. The three-dimensional sensor according to item 1 or 2.