JP4747041B2 - Tile unit constituting the detection surface of a detection device using electromagnetic induction - Google Patents

Description

  The present invention relates to a tile unit used in combination, and more particularly, to a tile unit for constituting a detection surface of a detection device using electromagnetic induction.

  Various detection devices using electromagnetic induction exist. For example, in the technique disclosed in Patent Document 1, a plurality of sensor units each provided with a cushion material between coils are arranged in a matrix, and a pressure distribution applied to the sensor unit is detected based on a change in electromagnetic coupling. This patent document 1 also discloses an example in which a change in electromagnetic coupling between coils is differentially detected by using three coil layers. In the technique disclosed in Patent Document 2, a plurality of sense coils are two-dimensionally arranged on a detection surface, and a position indicated by a position indicator made of a conductor or a magnetic material is read based on a change in inductance of the sense coil. Is. Furthermore, the technique disclosed in Patent Document 3 is for arranging a plurality of loop coils, reading a change in the induced voltage from the loop coils, and detecting the indicated position of the position indicator having a tuning circuit.

  Further, the technology disclosed in Japanese Patent Application No. 2005-096580 and Japanese Patent Application No. 2006-011748 by the same inventor as the inventor of the present application detects the pressure distribution by detecting a change in electromagnetic coupling between a plurality of coils to be electromagnetically coupled. It is to detect.

  Furthermore, the technique disclosed in Japanese Patent Application No. 2006-169145 by the same applicant as the present applicant is to detect the shape and distance of a conductor or a magnetic body, or to detect the indicated position of a non-conductor / non-magnetic body such as a finger. It is an object detection device capable of.

JP 2005-156474 A JP-A-10-198494 Japanese Patent Laid-Open No. 10-11205

  However, the detection surface of the above-described conventional detection device is configured by using a printed circuit board such as a glass epoxy substrate or a flexible substrate, in order to realize a huge detection surface or an electronic blackboard that covers the entire floor surface. It was very expensive to construct a huge detection surface. Further, in the case where the wiring of the sensor part is formed by patterning using etching or the like, it is physically difficult to form a huge detection surface in the first place. In addition, in the case of a detection device having a detection surface formed using a printed circuit board or the like, since there is no degree of freedom in the shape of the detection surface, for example, when the detection surface of the detection device is installed on the entire floor surface of a room, etc. It is also difficult to configure the detection surface along the unevenness according to the shape of the room. It is difficult to configure the detection surface to be compatible with various shapes, and it is necessary to create the detection surface according to the shape of the place where the detection surface is to be installed.

  In view of such a situation, the present invention is capable of constructing a detection surface of a detection device using electromagnetic induction, which can also be configured with a huge detection surface at low cost and can easily cope with detection surfaces of various shapes. A tile unit to be used in combination is to be provided.

  In order to achieve the above-described object of the present invention, a tile unit according to the present invention includes an insulating body having a predetermined thickness, a first loop wiring guide path provided in the insulating body, and a first insulating body. And a second loop wiring guide path provided in a direction parallel to and orthogonal to the loop wiring guide path.

  Here, the first loop wiring guide path may be a pair of guide paths provided in a coil shape, and the second loop wiring guide path may be a pair of guide paths provided in a coil shape.

  Further, the first loop wiring guide path may be configured by a pair of guide paths provided in a coil shape, and the second loop wiring guide path may be configured by a pair of guide paths provided in a straight line shape.

  Further, the first loop wiring guide path includes a pair of guide paths provided in a straight line, the second loop wiring guide path includes a pair of guide paths provided in a straight line, and the tile unit includes the first You may make it comprise the electroconductive board provided in the vicinity of the position where the guide path for loop wiring and the guide path for 2nd loop wiring orthogonally cross.

  The first loop wiring guide path is composed of a plurality of linear guide paths, the second loop wiring guide path is composed of a plurality of linear guide paths, and the tile unit. May be provided with conductive plates respectively provided in the vicinity between adjacent first loop wiring guide paths and in the vicinity between adjacent second loop wiring guide paths.

  Furthermore, the first loop wiring guide path is composed of a plurality of linear guide paths, the second loop wiring guide path is composed of a plurality of linear guide paths, and the tiles. The unit is in the vicinity of the first loop wiring guide path and in the vicinity between the adjacent second loop wiring guide paths, and in the vicinity of the second loop wiring guide path and between the adjacent first loop wiring guide paths. You may make it comprise the electroconductive board provided in the vicinity, respectively.

  The conductive plate may be provided so that the distance between the first loop wiring guide path and the second loop wiring guide path is constant.

  The conductive plate may be provided via an elastic body so that the distance between the first loop wiring guide path and the second loop wiring guide path changes.

  Here, the conductive plate may be provided on the insulating body by insert molding.

  Furthermore, a plurality of first loop wiring guide paths and second loop wiring guide paths may be provided in parallel in the insulating body.

  Furthermore, you may comprise an insulating body so that it may have a joint part for connecting with the other tile unit combined.

  The first loop wiring guide path and the second loop wiring guide path may be any guide path through which a conductive wire passes.

  Furthermore, you may comprise so that it may have an electroconductive substance provided in the guide path for 1st loop wiring, and the guide path for 2nd loop wiring.

  Here, the insulating body includes a first insulating body in which the first loop wiring guide path is provided on the surface with a groove structure, and a second insulating body in which the second loop wiring guide path is provided on the surface with a groove structure. And an insulating layer sandwiched between the respective surfaces provided with the groove structure.

  The insulating body may be provided such that the distance between the first loop wiring guide path and the second loop wiring guide path changes.

  The tile units may be combined to form a detection surface of a detection device that detects a change in electromagnetic coupling between the two coils.

  Further, the tile unit may be combined to form a detection surface of a detection device that detects the indication position of the position indicator having a tuning circuit.

  Since the tile unit of the present invention can be used in combination with a plurality of tile units without limitation in principle, an advantage that a huge detection surface or a detection surface having an arbitrary shape can be realized at low cost. There is. Further, since the tile unit of the present invention does not depend on the structure and detection method of the electromagnetic coupling unit, there is an advantage that it can be easily applied to the detection surface of various detection devices.

  The best mode for carrying out the present invention will be described below with reference to the drawings. FIG. 1 is a schematic block diagram for explaining a general configuration example of a detection apparatus using electromagnetic induction to which a tile unit of the present invention is applied. As shown in the drawing, a detection device using electromagnetic induction includes a detection surface 10 for detecting an object, a drive unit 20 connected to and driven by a first loop wiring provided on the detection surface, and a detection surface. A detection unit 30 connected to a second loop wiring provided to detect a change in electromagnetic coupling from now on, and a microcomputer 40 including a DSP or the like that controls these drive units and detection units to obtain a predetermined output. . The drive unit 20, the detection unit 30, and the microcomputer 40 may be appropriately selected according to the configuration of the wiring and the like provided on the detection surface.

  In the above example, the first loop wiring is connected to the drive unit and the second loop wiring is connected to the detection unit. However, the present invention is not limited to this, and conversely the first loop wiring is the detection unit. Needless to say, the second loop wiring may be connected to the driving unit. Furthermore, the same loop wiring may be connected to the drive unit and the detection unit in a time division manner, or the drive unit and the detection unit may be connected simultaneously. As described above, the present invention is not limited to a specific driving method or detection method of the detection device, and the tile unit of the present invention has various loop wirings according to the detection device method and application. Applicable to arrangement and structure.

A feature of the present invention resides in a tile unit for constituting the detection surface 10 of FIG. Hereinafter, the tile unit will be mainly described. 2A and 2B are schematic views for explaining the tile unit according to the first embodiment of the present invention. FIG. 2A is a top view, FIG. 2B is a front view, and FIG. 2C is a right side. FIG. In the tile unit of the present invention shown in FIG. 2, the first loop wiring guide path and the second loop wiring guide path are each composed of one straight hole. As shown in the figure, the tile unit 1 of the present invention includes an insulating body 2, a first loop wiring guide path 3, and a second loop wiring guide path 4. The insulating body 2 has a predetermined thickness, and various insulators such as ABS resin can be applied as long as it has insulating properties. The first loop wiring guide path 3 is provided in the insulating body 2 and extends from a hole formed in a straight line at the center near the upper surface side of the insulating body 2 in the illustrated example. The second loop wiring guide path 4 is provided in the insulating body 2. In the illustrated example, the second loop wiring guide path 4 is located at the center near the lower surface side of the insulating body 2 so as not to cross the first loop wiring guide path 3. The first loop wiring guide path 3 is formed in a straight hole with a direction changed by 90 degrees. That is, the second loop wiring guide path 4 is provided in a direction parallel to and orthogonal to the first loop wiring guide path 3.

  By combining the tile units 1 configured as described above, a detection surface of a detection device using electromagnetic induction is configured. FIG. 3 is a top view illustrating an example of a detection surface configured by combining a plurality of tile units according to the first embodiment of the present invention. The first conductive wire 5 is passed through the first loop wiring guide path 3 in a loop shape, the second conductive wire 6 is passed through the second loop wiring guide path 4 in a loop shape, and a plurality of tile units 1 are knitted without gaps. The detection surfaces as shown in the figure are arranged side by side. As the conductive wires 5 and 6, any flexible wire having conductivity such as a tin-plated wire or an enameled wire can be used.

  By using the detection surface configured in this way, for example, the indicated position detection device disclosed in Patent Document 3 can be realized. Specifically, on the detection surface composed of a plurality of tile units as shown in FIG. 3, the first conductive wire 5 passed through the first loop wiring guide path 3 in a loop shape is connected to the drive unit 20 (FIG. 1). Are sequentially connected, and a predetermined AC signal is applied to generate radio waves. The radio wave is received by the tuning circuit of the position indicator that performs position designation, and a signal induced by the reflected radio wave is detected by sequentially connecting the first conductive wire 5 to the detection unit 30 (FIG. 1). . On the other hand, the second conductive wire 6 passed in a loop shape through the second loop wiring guide path 4 arranged in the direction orthogonal to the first loop wiring guide path 3 is similarly driven by the drive unit 20 and is detected by the detection unit 30. Detect with. In this way, by combining the tile units of the first embodiment of the present invention, it is possible to configure a detection surface of the position detection device that can detect the indicated position coordinates of the position indicator on the XY plane.

  Here, in the tile unit of the present invention, when the detection surface 10 is desired to be enlarged, it is only necessary to combine more tile units. Therefore, the detection surface can be enlarged at a very low cost. Furthermore, since the shape of the detection surface is not necessarily a quadrilateral, a plurality of tile units may be arranged so that, for example, an uneven portion is provided in accordance with the shape of the installation position. If the tile unit of the present invention is used, it is only necessary to pass the conductive wire through the guide path in order to form the detection surface.

  Next, a tile unit according to a second embodiment of the present invention will be described with reference to FIG. 4A and 4B are schematic views for explaining a tile unit according to the second embodiment of the present invention. FIG. 4A is a top view, FIG. 4B is a front view, and FIG. 4C is a right side. FIG. In the figure, the parts denoted by the same reference numerals as those in FIG. In the first embodiment shown in FIG. 2, the first loop wiring guide path 3 and the second loop wiring guide path 4 are configured by one straight hole, but the first loop wiring guide path 3 shown in FIG. In the second embodiment, the first loop wiring guide path 3 includes a pair of guide paths provided in a coil shape, and the second loop wiring guide path 4 includes a pair of guide paths provided in a coil shape. More specifically, the first loop wiring guide path 3 and the second loop wiring guide path 4 are formed of a guide path formed in a coil shape by a pair of opposed arched holes. The first loop wiring guide path 3 and the second loop wiring guide path 4 thus configured are provided in the insulating body 2 in parallel and orthogonal directions, so that the tile unit 1 of the second embodiment is It is configured. In the tile unit of the second embodiment of the present invention, the first loop wiring guide path 3 and the second loop wiring guide path 4 are arranged in a coil shape. They are configured to be electromagnetically coupled to each other.

  By combining the tile units 1 configured as described above, a detection surface of a detection device using electromagnetic induction is configured. FIG. 5 is a top view showing an example of a detection surface configured by combining a plurality of tile units according to the second embodiment of the present invention. The first conductive wire 5 is passed through the first loop wiring guide path 3 in a loop shape, the second conductive wire 6 is passed through the second loop wiring guide path 4 in a loop shape, and a plurality of tile units 1 are knitted without gaps. The detection surfaces as shown in the figure are arranged side by side.

  By using the detection surface configured as described above, for example, the detection device disclosed in Japanese Patent Application No. 2006-169145 by the same application as the applicant of the present application can be realized. Specifically, on the detection surface composed of a plurality of tile units as shown in FIG. 5, one end of the first conductive wire 5 passed through the first loop wiring guide path 3 in a loop shape is connected to the detection unit 30 (FIG. 1), the other end is grounded, one end of the second conductive wire 6 looped through the second loop wiring guide path 4 is connected to the drive unit 20 (FIG. 1), and the other end is grounded. The second conductive line 6 is driven at a high frequency. When a measured object made of a conductor is placed on the detection surface, the degree of electromagnetic coupling becomes weak due to the influence (shield effect) of the measured object, and the induced current or induced voltage measured from the first conductive wire 5 becomes small. . On the other hand, when an object to be measured made of a magnetic material is placed on the detection surface, the degree of electromagnetic coupling increases and the induced current or induced voltage measured from the first conductive wire 5 increases. Therefore, by combining the tile units of the second embodiment of the present invention, the position where a change appears in the electromagnetic coupling portion is detected using the above-described phenomenon, and the shape of the object to be measured and the distance from the object to be measured are determined. The detection surface of the detectable detection device can be configured.

  Even in the tile unit of the second embodiment, when it is desired to enlarge the detection surface 10, it is only necessary to combine more tile units, so that the detection surface can be enlarged at a very low cost. Furthermore, since the shape of the detection surface is not necessarily a quadrilateral, a plurality of tile units may be arranged so that, for example, an uneven portion is provided in accordance with the shape of the installation position. If the tile unit of the present invention is used, it is only necessary to pass the conductive wire through the guide path in order to form the detection surface.

  In the illustrated example, the coiled arch constituting the first loop wiring guide path 3 is larger than the coiled arch constituting the second loop wiring guide path 4. The present invention is not limited to this, and the same size may be used.

  Further, in the tile unit of the second embodiment shown in FIG. 4, the first loop wiring guide path 3 and the second loop wiring guide path 4 are both configured by a pair of guide paths provided in a coil shape. The second embodiment of the present invention is not limited to this, and any configuration may be used as long as it can provide an electromagnetic coupling portion. For example, as shown in FIG. 6, the first loop wiring guide path 3 is constituted by a pair of guide paths provided in a coil shape, and the second loop wiring guide path 4 is formed by a pair of guide paths provided in a straight line shape. It is also possible to configure. FIG. 6 is a top view, FIG. 6 (b) is a front view, and FIG. 6 (c) is a right side view, similar to FIG. 2 and FIG. Further, the first loop wiring guide path may be provided in a rectangular shape, and the second loop wiring guide path may be provided in a straight line shape.

  The guide path as described above may be provided by providing a hole in the insulating body using a drill or the like, or using a mold that becomes a hole during injection molding of the insulating body. It is also possible to provide a structure as described below. FIG. 7 is a perspective view for explaining a method for providing a guide path. As shown in FIG. 7A, the insulating body of the tile unit 1 of the present invention includes a first insulating body 201, a second insulating body 202, and an insulating layer 203. The first insulating body 201 is provided with a first loop wiring guide path 3 on the surface thereof in a groove structure. The second insulating body 202 is provided with a second loop wiring guide path 4 in a groove structure on the surface. Such a groove shape can be easily formed using an injection molding technique. Then, the insulating layer 203 is sandwiched between the respective surfaces provided with the groove structure of the first insulating body and the second insulating body, so that the guide paths for the loop wiring are provided to the insulating body. . As a result, a large number of tile units can be manufactured at low cost. The groove structure in the illustrated example is merely an example, and is not limited to the illustrated example as long as the groove structure can be applied to the tile unit of the present invention.

  Further, as shown in FIG. 7B, the insulating body of the tile unit 1 of the present invention may be composed of a first insulating body 201, a second insulating body 202, and an elastic insulating layer 204. The tile unit of FIG. 7B is different from FIG. 7A in that an elastic insulating layer 204 is used instead of the insulating layer 203 of the tile unit of FIG. By providing the elastic insulating layer in this manner, the distance between the first loop wiring guide path and the second loop wiring guide path can be changed. Accordingly, when the detection surface is configured using this tile unit, the degree of coupling between the coils formed by the first loop wiring guide path and the second loop wiring guide path changes depending on the pressure received by the detection surface. As a result, a pointing position detection device using a finger or the like can be realized.

  Next, a tile unit according to a third embodiment of the present invention will be described with reference to FIG. The part different from the second embodiment is a part where an electromagnetic coupling part is provided. In the second embodiment, when the detection surface is configured by passing the conductive wire through the guide path, the coil unit directly electromagnetically couples. However, the tile unit of the third embodiment is indirectly electromagnetic. It is comprised so that it may couple | bond together. FIG. 8 is a schematic diagram for explaining a configuration in which the electromagnetic coupling portion of the tile unit according to the third embodiment of the present invention is provided by indirect coupling. FIG. 8A is a top view and FIG. ) Is a cross-sectional view near the center of the tile unit, and FIG. 8C is a vertical cross-sectional view near the center of the tile unit. In the tile unit of the third embodiment, the first loop wiring guide path 3 is constituted by a pair of guide paths provided in a straight line, and the second loop wiring guide path 4 is formed by a pair of guide paths provided in a straight line. It is configured. Further, a conductive plate 7 is provided in the vicinity of a position where the first loop wiring guide path 3 and the second loop wiring guide path 4 are orthogonal to each other. With this configuration, the first conductive wire 5 passed through the first loop wiring guide path 3 and the second conductive wire 6 passed through the second loop wiring guide path 4 are connected to the conductive plate 7. Indirect electromagnetic coupling is caused by the eddy current generated in the circuit.

  If the guide path for loop wiring is configured by a straight guide path in this way, when a tile unit is knitted by passing the conductive line through the guide path, the conductive line can be inserted more smoothly than the coil-shaped guide path. Therefore, the assembly of the detection surface becomes easier.

  Further, the conductive plate 7 shown in FIG. 8 may be provided by so-called insert molding, in which an insulating body is molded while the conductive plate is set in a mold. This enables mass production at low cost. In addition, you may provide a protective film etc. in the uppermost surface of a tile unit suitably. This may be provided in advance for each tile unit, or may be provided so as to cover the entire detection surface after the detection surface is configured.

  In the tile unit shown in FIG. 8B, the conductive plate 7 is provided so that the distance between the first loop wiring guide path 3 and the second loop wiring guide path 4 is constant. . However, the tile unit according to the third embodiment of the present invention is not limited to this. For example, as shown in the cross-sectional view of FIG. 8D, the conductive plate 7 includes the first loop wiring guide path 3 and the first loop wiring. You may provide via the elastic body 8 so that the distance with the guide path 4 for 2 loop wirings may change. By combining the tile units configured in this way, not only the shape of the object made of a conductor or magnetic material and the distance from the object, but also the indication position detection of a non-conductor / non-magnetic object such as a finger can be detected. The detection surface of the possible object detection device can be configured.

  In the first and second embodiments described above, there is one guide path for the first loop wiring and one guide path for the second loop wiring (one hole in FIG. 2, one in FIGS. 4, 6, and 8). A pair of holes) are provided in the insulating body, which illustrates the minimum unit configuration of the tile unit. The tile unit of the present invention is not limited to such a minimum unit configuration, but may have a configuration in which a plurality of first loop wiring guide paths and a plurality of second loop wiring guide paths are provided in parallel in the insulating body. Of course. For example, as shown in the schematic top view of the tile unit in FIG. 9, two first loop wiring guide paths 3 and two second loop wiring guide paths 4 may be provided in the insulating body 2. good. Of course, two first loop wiring guide paths may be provided, while one second loop wiring guide path may be provided. A larger number may be provided. A predetermined number of loop wiring guide paths may be provided in consideration of the size of tile units, detection resolution, and the like. Note that the guide route for loop wiring shown in FIG. 9 is not limited to the illustrated example, and may be a guide route of another embodiment.

  On the other hand, for example, it is of course possible to arrange the loop wiring guide path so that one electromagnetic coupling portion can be configured by using, for example, four tile units. However, in this case, it is necessary to use four different tile units to form one electromagnetic coupling unit. Since the tile unit of the present invention forms a detection surface by combining a large number of tile units, in consideration of this, it is preferable that all tile units have the same shape.

  Next, another arrangement example of the conductive plate of the tile unit according to the third embodiment of the present invention will be described with reference to FIG. In the tile unit shown in FIG. 8, the conductive plate is provided in the vicinity of the position where the first loop wiring guide path and the second loop wiring guide path are orthogonal to each other. A conductive plate may be provided. FIG. 10 is a diagram for explaining a variation of an arrangement example of conductive plates used in the tile unit of the present invention. In the tile unit shown in FIG. 10, the first loop wiring guide path and the second loop wiring guide path are each composed of a plurality of pairs of guide paths provided in a straight line. FIG. 10A shows an example in which the conductive plate 7 is formed in the vicinity between the adjacent first loop wiring guide paths 3 and in the vicinity between the adjacent second loop wiring guide paths 4. Yes. FIG. 10B is an arrangement example in which FIG. 8 and FIG. 10A are combined, and the vicinity of the position where the first loop wiring guide path 3 and the second loop wiring guide path 4 are orthogonal and adjacent to each other. In this example, conductive plates 7 are formed in the vicinity between the first loop wiring guide paths 3 and in the vicinity between the adjacent second loop wiring guide paths 4. Further, FIG. 10C shows the vicinity of the first loop wiring guide path 3, the vicinity of the adjacent second loop wiring guide paths 4, and the vicinity of the second loop wiring guide path 4. An example in which conductive plates 7 are formed in the vicinity between the first loop wiring guide paths 3 is shown. A tile unit capable of constituting an electromagnetic coupling portion can be realized by providing conductive plates in such various patterns.

  In addition, as shown in FIG. 10, in relation to adjacent tile units, the tile unit is also provided in a portion located between the loop wiring guide path of one tile unit and the loop wiring guide path of the other tile unit. It is preferable to provide a conductive plate that becomes a single conductive plate when combined. Further, the conductive plate of the illustrated example is provided inside the quadrilateral provided by the orthogonal guide path so as not to be on the guide path when viewed from above, but the present invention is not limited to this, and FIG. As shown in FIG. 8, a conductive plate may be provided so as to cover the guide path.

  Next, a tile unit according to a fourth embodiment of the present invention will be described with reference to FIG. 11A and 11B are schematic diagrams for explaining a tile unit according to a fourth embodiment of the present invention. FIG. 11A is a top view, FIG. 11B is a cross-sectional view around the center of the tile unit, and FIG. 11 (c) is a longitudinal sectional view near the center of the tile unit. In the tile unit of the above-described embodiment, a plurality of tile units are formed by passing the first conductive wire in a loop shape through the first loop wiring guide path and passing the second conductive wire in a loop shape through the second loop wiring guide path. The detection surface was constructed by knitting and arranging them without gaps. However, the tile unit of the fourth embodiment has a joint portion for connecting with another tile unit to be combined, and a plurality of them are arranged side by side to constitute a detection surface. In the illustrated example, a part of the upper end of the insulating body is overhanging, and a convex part is provided on the lower surface of the insulating body, and a part of the lower side of the insulating body is overhanging. A joint portion 9 is constituted by a concave portion provided toward the side. When a plurality of tile units configured in this way are arranged side by side, the concave and convex portions of the tile unit are respectively fitted with the concave and convex portions of other tile units to be combined. By configuring the tile unit in this way, it is possible to fix the tile unit with other tile units that are reliably combined, and the position of the loop wiring guide path is less likely to occur. It is reduced.

  Note that the tile unit according to the fourth embodiment of the present invention is not limited to the joint portion in the above-described illustrated example. For example, even if the end portion of the insulating body is not overhanging, the concave and convex portions are horizontally formed. You may comprise so that a part may be provided in the side surface of an insulating body and it may fit with the convex part and recessed part of another tile unit. Furthermore, in the joint part of the above-described illustrated example, one concave portion and one convex portion are provided for each side, but the present invention is not limited to this, and two or more are provided if necessary. Of course. Thus, the joint part of the tile unit of the present invention may have any configuration as long as it can be connected to another tile unit to be combined. Furthermore, although the example of the illustrated tile unit is provided with a coil-shaped loop wiring guide path corresponding to the second embodiment, the present invention is not limited to this, and the guide path of another embodiment is used. Of course it does not matter.

  In the tile units of the present invention that have been described so far, the loop wiring guide path is configured by a hole, and when the detection surface of the detection device is configured in combination with other tile units, a tin-plated wire is used. And those that pass conductive wires such as enameled wires. However, it is of course possible to embed a conductive material in the loop wiring guide path provided in the tile unit of the present invention in advance. In other words, in the case of a tile unit configured to pass a conductive wire through a loop wiring guide route later, when a detection surface is configured by combining a plurality of tile units, it is necessary to knitted by passing the conductive wire through all the tile units. It becomes. However, in the case of a tile unit in which a conductive material is embedded in the loop wiring guide path in advance, the tile units are arranged side by side without any gaps, and then the loop wiring is made at the tile unit at the end of the detection surface so as to become the loop wiring. The creation of the detection surface is completed simply by connecting the conductive material embedded in the guide path. In addition, since a loop wiring will be cut | disconnected if a clearance gap is made between the tile units arrange | positioned combining, in this case, the tile unit which has a joint part as shown in FIG. 11 is more preferable.

  It should be noted that the tile unit of the present invention is not limited to the illustrated examples described above, and it is needless to say that various modifications can be made without departing from the scope of the present invention. In the illustrated example, the pattern of the tile unit constituting the detection surface used for various detection devices is disclosed. However, the tile unit of the present invention can be applied to the detection surface of any structure as long as it is a detection surface of the detection device using electromagnetic induction. Is also applicable.

FIG. 1 is a schematic block diagram for explaining a general configuration example of a detection apparatus using electromagnetic induction to which a tile unit of the present invention is applied. 2A and 2B are schematic views for explaining the tile unit according to the first embodiment of the present invention. FIG. 2A is a top view, FIG. 2B is a front view, and FIG. 2C is a right side. FIG. FIG. 3 is a top view showing an example of a detection surface configured by combining a plurality of tile units according to the first embodiment of the present invention. 4A and 4B are schematic views for explaining a tile unit according to the second embodiment of the present invention. FIG. 4A is a top view, FIG. 4B is a front view, and FIG. 4C is a right side. FIG. FIG. 5 is a top view showing an example of a detection surface configured by combining a plurality of tile units according to the second embodiment of the present invention. 6A and 6B are schematic diagrams for explaining another example of the tile unit according to the second embodiment of the present invention. FIG. 6A is a top view, FIG. 6B is a front view, and FIG. ) Is a right side view. FIG. 7 is a perspective view for explaining a method for providing a guide path of the tile unit of the present invention. 8A and 8B are schematic views for explaining a tile unit according to the third embodiment of the present invention, in which FIG. 8A is a top view, FIG. 8B is a cross-sectional view around the center of the tile unit, and FIG. 8 (c) is a longitudinal sectional view near the center of the tile unit, and FIG. 8 (d) is a transverse sectional view near the center of the tile unit provided with a conductive plate via an elastic body. FIG. 9 is a view for explaining an example in which a plurality of first loop wiring guide paths and a plurality of second loop wiring guide paths are provided in the insulating body of the tile unit of the present invention. FIG. 10 is a diagram for explaining a variation of an arrangement example of conductive plates used in the tile unit of the present invention. 11A and 11B are schematic diagrams for explaining a tile unit according to a third embodiment of the present invention. FIG. 11A is a top view, FIG. 11B is a cross-sectional view around the center of the tile unit, and FIG. 11 (c) is a longitudinal sectional view near the center of the tile unit.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Tile unit 2 Insulating body 3 Guide path for 1st loop wiring 4 Guide path for 2nd loop wiring 5 1st conductive wire 6 2nd conductive wire 7 Conductive board 8 Elastic body 9 Joint part 10 Detection surface 20 Drive part 30 Detection unit 40 Microcomputer 201 First insulating body 202 Second insulating body 203 Insulating layer 204 Elastic insulating layer

Claims (17)

A tile unit used in combination for constituting a detection surface of a detection device using electromagnetic induction, the tile unit comprising:
An insulating body having a predetermined thickness;
A first loop wiring guide path provided on the insulating body and including a pair of guide paths provided in a coil shape ;
A second loop wiring guide path that is provided in a direction parallel to and orthogonal to the first loop wiring guide path of the insulating body, and includes a pair of guide paths provided in a straight line ;
A tile unit comprising: A tile unit used in combination for constituting a detection surface of a detection device using electromagnetic induction, the tile unit comprising:
An insulating body having a predetermined thickness;
A first loop wiring guide path provided on the insulating body and including a pair of linear guide paths;
Wherein the insulating said first guideway loop line body provided parallel and orthogonal directions and a second guideway loop wires that Do a pair of guide paths provided on a straight line,
A conductive plate provided in the vicinity of a position where the first loop wiring guide path and the second loop wiring guide path intersect;
A tile unit comprising: Characterized in tile unit according to claim 2, wherein the conductive plate is a respectively provided in the vicinity between the second loop wiring guideway adjacent and in the vicinity between the guide for the first loop wires adjacent path Rukoto Tile unit. 3. The tile unit according to claim 2 , wherein the conductive plate is in the vicinity of the first loop wiring guide path, in the vicinity between the adjacent second loop wiring guide paths, and in the vicinity of the second loop wiring guide path. tile unit, wherein Rukoto respectively provided in the vicinity between in the first loop wiring guideway adjacent and.

In tile unit according to any one of claims 2 to 4, wherein the conductive plate, the distance between the first loop wiring guideway and the second loop wire guiding passage is provided so as to be constant Tile unit characterized by. In tile unit according to any one of claims 2 to 4, wherein the conductive plate, as the distance between the first loop wiring guideway and the second loop wire guiding path changes, the elastic member A tile unit characterized by being provided via. The tile unit according to any one of claims 2 to 6 , wherein the conductive plate is provided in the insulating body by insert molding. The tile unit according to any one of claims 1 to 7 , wherein a plurality of the first loop wiring guide paths and a plurality of second loop wiring guide paths are provided in parallel to the insulating body. Tile unit. The tile unit according to any one of claims 1 to 8 , wherein the insulating body has a joint portion for connecting with another tile unit to be combined. A tile unit used in combination for constituting a detection surface of a detection device using electromagnetic induction, the tile unit comprising:
An insulative body having a joint portion for connecting with another tile unit to be combined and having a predetermined thickness;
A first loop wiring guideway provided in the insulating body;
A second loop wiring guide path provided in a direction parallel and orthogonal to the first loop wiring guide path of the insulating body;
A tile unit comprising: The tile unit according to any one of claims 1 to 10 , wherein the first loop wiring guide path and the second loop wiring guide path are guide paths through which conductive wires are passed. Tile unit. The tile unit according to any one of claims 1 to 10 , further comprising a conductive substance provided in the first loop wiring guide path and the second loop wiring guide path. Tile unit. A tile unit used in combination for constituting a detection surface of a detection device using electromagnetic induction, the tile unit comprising:
An insulating body having a predetermined thickness;
A first loop wiring guideway provided in the insulating body;
A second loop wiring guide path provided in a direction parallel and orthogonal to the first loop wiring guide path of the insulating body;
A conductive substance provided in the first loop wiring guide path and the second loop wiring guide path;
A tile unit comprising: The tile unit according to any one of claims 1 to 13, wherein the insulating body includes:
A first insulating body provided with a groove structure on a surface thereof, the first loop wiring guideway;
A second insulating body provided with a groove structure on the surface thereof, the second loop wiring guideway;
An insulating layer sandwiched between the surfaces provided with the groove structure;
A tile unit comprising:   15. The tile unit according to claim 1, wherein the insulating body is provided such that a distance between the first loop wiring guide path and the second loop wiring guide path is changed. A tile unit comprising an elastic body.   The tile unit according to any one of claims 1 to 15, wherein the tile unit is combined to form a detection surface of a detection device that detects a change in electromagnetic coupling between two coils. Tile unit.   The tile unit according to any one of claims 1 to 15, wherein the tile unit is combined to form a detection surface of a detection device that detects an indication position of a position indicator having a tuning circuit. Tile unit.