JP6850620B2 - Pickup device - Google Patents

Description

The present invention relates to a technique for picking up minute objects such as parts, and more particularly to a technique applicable to a pickup device for picking up an object equipped with an RFID (Radio Frequency IDentification) tag.

For example, in structures such as large machines and devices, a large number of parts such as bolts and screws (hereinafter, may be simply referred to as "bolts") of different types are used in manufacturing. In addition, some bolts have the same size and shape of the head but different lengths under the neck, and it is easy to make a mistake in attaching the wrong bolt. In many cases, the mistake is noticed only after the bolt is attached. In addition, even if these bolts are the same, the torque value may differ depending on the mounting part, and it may be necessary to replace all of them within a certain period such as 10 years. May be required.

In order to enable such identification of the type of parts and solid-state management, RFID tags (including all those called by various names such as IC tags, electronic tags, wireless tags, etc.) are arranged on the parts to be solid. Is being considered to be identifiable. For example, Japanese Patent Application Laid-Open No. 2006-20257 (Patent Document 1) describes that an RFID tag is placed on the head of a metal bolt.

On the other hand, as a technique for making sure that the types of parts to be mounted are correct, for example, Japanese Patent Application Laid-Open No. 2009-137748 (Patent Document 2) states that when an operator picks up parts stored in a storage or the like. It is described that the RFID tag attached to the storage or the like is read by a wearable device worn by the worker to detect that the worker has performed an operation of picking up the part.

Japanese Unexamined Patent Publication No. 2006-20257 Japanese Unexamined Patent Publication No. 2009-137748

Parts used for manufacturing structures and the like range from bolts and the like that are large enough to be grasped by fingers to smaller parts such as RFID tags that are several millimeters square. Such small parts need to be picked up with specialized equipment, or it is more efficient to pick up with such equipment. In addition, the manufacturing work of the structure may be performed in various places including outdoors, and it is desirable that such a device has a small size and portability such as a wearable structure.

On the other hand, while identifying the type of parts to be picked up so as not to make a mistake, solid management is performed for each individual part in addition to the type of parts at the time before mounting such as when picking up, not after mounting the parts. It may be necessary to do so. In this regard, in the technique described in Patent Document 2, it is possible to identify which type of component is picked up when the component is picked up, but since the storage unit is provided with an RFID tag, each component is individually provided. It is not possible to manage the individual parts of each part at the time of pickup.

Therefore, an object of the present invention is to provide a pickup device capable of reading and writing to the RFID tag of a small part or the like provided with the RFID tag and having portability.

The above and other objects and novel features of the present invention will become apparent from the description and accompanying drawings herein.

A brief description of typical inventions disclosed in the present application is as follows.

A pickup device according to a typical embodiment of the present invention is a pickup device for picking up a component on which an RFID tag is arranged or made of an RFID tag, and the pickup device for picking up the component and information on the RFID tag. It has a control unit for reading and writing. The pickup device has a detection unit made of a loop-shaped coil in the vicinity of a portion where the component is picked up, the detection unit and the control unit are connected by a cable, and the control unit is connected by a user. When the component is picked up by operating the pickup device, information is read / written to / from the RFID tag via the detection unit.

Among the inventions disclosed in the present application, the effects obtained by typical ones will be briefly described as follows.

That is, according to a typical embodiment of the present invention, a pickup device capable of reading and writing to the RFID tag of a small part or the like provided with the RFID tag and having portability is realized. It becomes possible.

It is a figure which showed the outline about the structural example of the pickup device which is Embodiment 1 of this invention. It is a figure which showed the outline about the structural example of the RFID tag. (A) and (b) are diagrams showing the outline of an example of the pickup device of the first type in the first embodiment of the present invention. (A) and (b) are diagrams showing the outline of the method for detecting an RFID tag according to the first embodiment of the present invention. (A) and (b) are diagrams showing the outline of a modified example of the cable configuration according to the first embodiment of the present invention. It is a figure which showed the outline about the structural example of the pickup device which is Embodiment 2 of this invention. It is a figure which showed the outline about the other configuration example of the pickup apparatus which is Embodiment 2 of this invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In addition, in all the drawings for explaining the embodiment, in principle, the same reference numerals are given to the same parts, and the repeated description thereof will be omitted. On the other hand, the parts described with reference numerals in one figure may be referred to with the same reference numerals in the explanation of other figures, although they are not shown again.

(Embodiment 1)
The pickup device according to the first embodiment of the present invention is a device for picking up a small component (the RFID tag itself may be a small package tag with an integrated antenna, etc.) on which the RFID tag is arranged. By providing a reader / writer function for reading and writing information to the RFID tag of the component when the component is used, it is possible to manage the component individually. Unless otherwise specified, the case where the RFID tag itself is picked up as a part will be described below as an example.

FIG. 2 is a diagram showing an outline of a configuration example of an RFID tag. The RFID tag 31 can be, for example, a commercially available small passive type RFID tag having a size of about 2.5 mm square. The RFID tag 31 has a configuration in which an antenna coil 312 is formed by wiring a conductor around an IC chip 313 arranged near the center of a base material 311 such as an insulating resin.

There are several possible methods for picking up small parts such as the RFID tag 31, but in the pickup device of the present embodiment, a case where the parts are supported by being supported at two or more places is taken as an example. To do. This broadly includes picking up by actions represented by, for example, "grabbing", "pinching", "pinching" and the like. Hereinafter, the operation of performing this first method may be collectively referred to as "sandwiching".

FIG. 3 is a diagram showing an outline of an example of the pickup device of the first type in the present embodiment. Here, in order to explain the method in which the pickup device 1 "sandwiches" parts and the like, the parts of the pickup device 10 constituting the pickup device 1 are mainly shown, and the other components are omitted.

FIG. 3A shows an example in which the pickup device 10 constituting the pickup device 1 has a configuration in which parts are supported at two locations. For example, as shown in the figure, a component or the like is sandwiched and picked up by the tips of two plate-shaped or rod-shaped members. In the vicinity of the tip portion that sandwiches the component or the like, an RFID tag 31 and a detection unit 11 in which a one-turn or multiple-turn loop-shaped coil antenna (not shown) for sending and receiving signals is formed are provided.

FIG. 3A shows a tweezers or a tong-shaped instrument having a structure in which two members are integrally connected at one end as a typical example, but they are movably connected at an intermediate portion between the two members. It may have a structure like tweezers. Further, it may be configured not to be integrally connected like chopsticks. All of these members may be made of metal (or conductor), the member provided with the detection unit 11 (or the portion provided with the detection unit 11) is made of metal, and the other (or other portion) member is non-metal. It may be made of.

In the figure, an example is shown in which the RFID tag 31 is picked up one by one from a large number stored in a parts case or the like by the pickup device 1 having such a structure. In the present embodiment, the detection unit 11 of the RFID tag 31 is provided near the portion where the pickup device 10 sandwiches the RFID tag 31 (the tip of the pickup device 10 in the example of FIG. 3A). As a result, information can be read and written to and from the RFID tag 31 at the timing when the pickup device 10 sandwiches the RFID tag 31.

FIG. 3B shows an example of a configuration in which the pickup device 10 contacts and supports the component at one location. Here, as a typical example, a configuration in which the pickup device 10 has the shape of a finger cot and is attached to the finger of an operator (including a robot or the like) and the detection unit 11 is provided near the tip of the finger is shown. There is. It is desirable that the loop-shaped coil antenna (not shown) in the detection unit 11 has a flexible structure that does not hinder the movement of the finger.

In the example of FIG. 3B, the pickup device 10 itself supports the parts and the like (in the example of FIG. 3B, the parts 3 such as the bolt on which the RFID tag 31 is arranged) at only one place. By contacting and supporting the component 3 with another finger of the operator, the entire hand of the operator sandwiches and holds the component 3. As described above, in addition to the case where the parts and the like are sandwiched by the pickup device 10 itself, the case where the pickup device 10 is partially used and sandwiched is also broadly included. Further, there may be three or more places to support for sandwiching the parts or the like.

FIG. 1 is a diagram showing an outline of a configuration example of a pickup device according to a first embodiment of the present invention. In the example of FIG. 1, a configuration using tweezers as a pickup device 10 for "pinching" a part or the like is shown. Similar to the example of FIG. 3A, the pickup device 1 is provided with a detection unit 11 at a position (in the example of FIG. 1 the tip of the pickup device 10) sandwiching a component or the like in the pickup device 10.

The detection unit 11 is formed with an RFID tag 31 and a loop-shaped coil antenna for exchanging and receiving signals. The size of this coil antenna is such that it can be regarded as sufficiently small with respect to the wavelength of the radio wave used. The details of the detection unit 11 will be described later. The detection unit 11 is connected to the control unit 13 via the cable 12. The control unit 13 has a reader / writer function that receives power from a power supply mechanism (not shown) composed of, for example, a storage battery or the like, and reads / writes to / from the RFID tag 31 via the detection unit 11. Further, a wired or wireless communication function for transmitting the read ID to the higher-level system 2 that performs information processing related to the ID, or receiving information to be written in the RFID tag 31 from the higher-level system 2 is provided. You may have. In order to ensure the portability of the pickup device 1 as a whole and improve the operability of the pickup device 10, it is desirable that the control unit 13 has a configuration independent of the pickup device 10 and is mounted as a wearable configuration.

FIG. 1 also shows an enlarged view of the detection unit 11. As described above, the detection unit 11 needs to be formed with a loop-shaped coil antenna. However, in such a pickup device 1, the vicinity of the tip portion that sandwiches parts or the like is important for work, and if a structure such as a loop-shaped coil antenna is mounted near the tip portion, it becomes a big obstacle in the pickup work. obtain.

Therefore, in the present embodiment, the pickup device 10 (at least near the detection unit 11) is made of metal, and this metal part is used as a high-frequency current transmission path to form a coil structure together with the cable 12. To form. That is, instead of extending the wiring on the signal line 121 side to form a one-turn loop-shaped coil antenna, the signal line 121, which cannot be said to be sturdy, is extended in order to form a sturdy loop-shaped coil antenna. Make the length as short as possible. Specifically, the length of extension of the signal line 121 is set to a short length of one winding or less, and the remaining length is the shortest length from the curved portion of the notch 111 in the metal portion of the pickup device 10 to the earth line 122. By using the length portion, a total of one-turn loop-shaped coil antenna is equivalently realized. This makes the structure near the tip of the pickup device 10 simple and sturdy.

Specifically, as shown in the enlarged view, for example, with respect to the upper plate 101a (which may be the lower plate 101b) of the metal tweezers which is the pickup device 10, the signal line 121 and the earth line 122 2 Connect the book cables with solder or the like at intervals. In the present embodiment, in order to form the coil more efficiently, a notch 111 as shown in the figure is provided near the portion where the RFID tag 31 is sandwiched at the tip of the upper plate 101a, and the signal line 121 is provided near both ends thereof. And the ground line 122 shall be connected. In addition, these cables form a cable 12 by twisting them into a twisted pair cable, for example.

FIG. 4 is a diagram showing an outline of the method for detecting the RFID tag 31 in the present embodiment. Here, as in the enlarged view of FIG. 1, a state in which the vicinity of the tip portion of the tweezers-shaped pickup device 10 is enlarged is shown. FIG. 4A shows an example in which the upper plate 101a and the lower plate 101b of the pickup device 10 are both made of metal members, and FIG. 4B shows a signal line 121 and an earth line 122. An example is shown in which the lower plate 101b, which is not connected to the lower plate 101b, is made of a non-metal member. In both cases of FIGS. 4A and 4B, as shown in the drawing, the high-frequency current i flowing through the signal line 121 passes around the notch 111 of the upper plate 101a serving as the grounding portion and reaches the grounding line 122. It flows.

At this time, the signal line 121 can form a loop-shaped coil antenna together with the tip portion of the signal line 121 by diverting the high-frequency current i flowing through the upper plate 101a of the tweezers. A magnetic field distribution Φ as shown in FIGS. 4 (a) and 4 (b) is generated on this coil surface. That is, in FIG. 4A, since the magnetic field distribution Φ cannot penetrate the metal lower plate 101b on the coil surface, the magnetic field distribution Φ passing through the RFID tag 31 is the lower plate 101b as shown in the figure. It will come out through the space. On the other hand, in FIG. 4B, since the magnetic field distribution Φ can penetrate the non-metal lower plate 101b on the coil surface, the magnetic field distribution Φ is as shown in the drawing.

Due to these magnetic field distributions Φ generated on the coil surface, it is possible to inductively couple with the RFID tag 31 for communication. In order to generate such a magnetic field distribution Φ, the surface formed by the recess of the notch 111 is formed so as to be substantially parallel to the surface of the RFID tag 31 when the RFID tag 31 is sandwiched between the tip portions of the tweezers. It is desirable to be done. Further, in order to prevent the magnetic field distribution Φ from being shielded by the upper plate 101a serving as the ground portion, it is preferable to make the recess of the notch portion 111 as wide as possible within the range where the strength of the pickup device 10 can be secured.

FIG. 5 is a diagram showing an outline of a modified example of the configuration of the cable 12 in the present embodiment. In the example shown in FIGS. 1 and 4, a twisted pair cable is composed of two cables, a signal line 121 and an earth line 122. When a twisted pair cable is used, it may be difficult to handle it so that it does not get in the way due to the morphological characteristics of the cable.

Therefore, as a modification that enables the cable processing to be performed in a more unobtrusive manner, in FIG. 5A, the portion of the cable 12 that is routed along the upper plate 101a of the tweezers is stripped from the twisted pair cable. The lead wire is eliminated by replacing it with the line 12a. Even in this case, a loop-shaped coil antenna as shown in FIG. 4 can be formed between the signal line 121 connected to the transmission line of the strip line 12a and the periphery of the notch 111 of the upper plate 101a. ..

Similarly, in the modified example of FIG. 5B, the portion of the cable 12 routed along the upper plate 101a is replaced with the core wire of the coaxial cable (coaxial cable core wire 12b) from the twisted pair cable to eliminate unnecessary lead wires. are doing. In this case, instead of forming a loop-shaped coil antenna with the periphery of the notch 111 of the upper plate 101a by the signal line 121 as in the examples of FIGS. 1, 4 and 5 (a), The portion where the coaxial cable core wire 12b is exposed to the notch portion 111 forms a loop-shaped coil antenna with the periphery of the notch portion 111 of the upper plate 101a.

When the coaxial cable core wire 12b is routed along the upper plate 101a, for example, as shown in the figure, a groove portion 112 is provided along the side surface portion of the upper plate 101a, and the coaxial cable core wire 12b is housed therein. In this way, the exposure of the coaxial cable core wire 12b may be suppressed to improve the durability. Further, in order to suppress the exposure, the open portion of the groove 112 may be filled or covered with a lid or the like within a range that does not impair the characteristics of the coaxial cable. The structure is not limited to the groove portion 112 exposed on the side surface portion of the upper plate 101a, and for example, the coaxial cable core wire 12b may be passed through a hole portion (not shown) provided so as to penetrate the inside along the extending direction of the upper plate 101a. .. Alternatively, the coaxial cable core wire 12b through which the hole penetrates the inside may be passed through the groove portion 112 exposed on the side surface portion via insulation.

As described above, according to the pickup device 1 according to the first embodiment of the present invention, a small component (or the RFID tag 31 itself) on which the RFID tag 31 is arranged is "sandwiched" by the pickup device 10. When picking up, information can be read and written to and from the RFID tag 31 via the detection unit 11 formed near the tip of the pickup device 10.

Further, by providing a notch 111 near the metal tip of the pickup device 10 and diverting a high frequency current flowing from the periphery of the notch 111 of the pickup device 10 to the ground line 122, one loop is formed in the signal line 121. Instead of forming it, a loop-shaped coil antenna is synthesized and formed around the notch 111 together with the signal line 121. As a result, the structure near the tip of the pickup device 10 can be simplified, and the sturdy structure of the upper plate 101a can be used.

(Embodiment 2)
The pickup device according to the second embodiment of the present invention picks up a small component (or the RFID tag itself) on which the RFID tag is arranged, as in the first embodiment described above, and at that time, with respect to the RFID tag. It reads and writes information. As a method of picking up parts, in the first embodiment, a method of picking up parts by "pinching" which is the first method was mainly targeted, but in the present embodiment, the second method is used. It is intended for those that are picked up by sucking and sucking parts (hereinafter sometimes collectively referred to as "suction").

FIG. 6 is a diagram showing an outline of a configuration example of the pickup device according to the second embodiment of the present invention. Since the control unit 13 and the higher-level system 2 are the same as the configuration shown in FIG. 1 of the first embodiment described above, the description thereof will be omitted again. In the example of FIG. 6, as the pickup device 10, a pump that sucks by air pressure is described as an example instead of tweezers that support and pick up a part (RFID tag 31) at two places.

The pump, which is the pickup device 10, is composed of a pump portion 113 made of a stretchable material such as rubber, and a nozzle portion 114 for sucking and discharging air. When the operator manually grasps the pump portion 113 to discharge the internal air from the tip hole of the nozzle portion 114, and then arranges the tip hole in the vicinity of the RFID tag 31 to release the pump portion 113, the tip hole is released. A pressure for sucking air is generated from the pump portion 113 toward the inside of the pump portion 113. The RFID tag 31 can be sucked to the tip of the nozzle portion 114 by this suction pressure.

A loop-shaped coil as the detection unit 11 is formed in the tip hole portion of the nozzle unit 114. Since the coil has a loop shape, the coil can be mounted in a state where air can flow in and out without blocking the tip hole by forming the coil on the outer peripheral portion of the tip hole. The cable 12 connected to the detection unit 11 is composed of, for example, a twisted pair cable, a coaxial cable, or the like, and constitutes an antenna 123 attached along the pump unit 113 and the nozzle unit 114. The detection unit 11 is connected to the control unit 13 via wireless communication between the antenna 123 and the transmission / reception antenna unit 131 connected from the control unit 13 by the cable 132.

Since the pickup device 1 shown in the example of FIG. 6 uses a pump having a simple structure for manually sucking as the pickup device 10, it has an advantage that it can be easily configured at low cost. On the other hand, since the suction is performed manually, the suction force is not sustained, and the suction force becomes weaker with the passage of time.

FIG. 7 is a diagram showing an outline of another configuration example of the pickup device according to the second embodiment of the present invention. In the example of FIG. 7, a suction device that continuously sucks air by a motor or the like using power is used as the pickup device 10. As a result, although the cost of the pickup device 10 is higher than that in the case of using the pickup device 10 for manually sucking as shown in the example of FIG. 6, it is possible to avoid a decrease in the suction force over time. .. In the example of FIG. 7, a case where a hand gun type suction device as commercially available is used is shown, but the shape and configuration of the suction device are not particularly limited to this.

The hand gun type suction device, which is the pickup device 10, has, for example, a suction mechanism 115 including a mechanism for sucking air such as an electric pump built in the main body, and a power supply unit 116 including a storage battery or the like. Further, the grip unit has a built-in control unit 13 having a reader / writer function for the RFID tag 31 and a communication function with the host system 2. In the example of FIG. 7, the pickup device 10 itself has an integrated configuration including the control unit 13 and the power supply unit 116, but as in the examples of FIGS. 1 and 6, these mechanisms are configured separately from the pickup device 10. However, the pickup device 10 itself may be configured to be smaller and lighter.

A detection unit 11 including a loop-shaped coil antenna similar to the example of FIG. 6 is formed in the tip hole of the nozzle portion 114 of the pickup device 10, and a cable 12 composed of a twisted pair cable connected to the detection unit 11 is formed. It is connected to the control unit 13. In the example of FIG. 7, the cable 12 is described as a configuration in which the cable 12 is routed to the outside of the hand gun type suction device which is the pickup device 10, but the cable 12 may be routed inside so as not to be exposed to the outside.

When the suction switch 118a configured at the position of the trigger of the hand gun is pressed by the operator, the suction mechanism 115 supplied with power from the power supply unit 116 continuously sucks air from the tip hole of the nozzle unit 114 during that time. To do. The suction pressure generated by this allows the RFID tag 31 to be sucked to the tip of the nozzle portion 114. The air sucked by the suction mechanism 115 is discharged from, for example, the air filter 117. Similarly, when the reading switch 118b configured adjacent to the suction switch 118a is pressed by the operator, the control unit 13 performs a read / write operation for the RFID tag 31 via the detection unit 11.

The reading operation of the RFID tag 31 is performed only when the suction switch 118a is pressed by the operator and the RFID tag 31 is sucked by the tip of the nozzle portion 114 and the reading switch 118b is further pressed. May be done. That is, the operator can improve the efficiency by suppressing the suction operation and the reading operation to the minimum necessary by properly using the operation of pressing the suction switch 118a and the reading switch 118b. The suction switch 118a and the reading switch 118b are turned on when pressed by the operator and turned off when released, and are turned on when pressed by the operator and maintained in the on state even when released. An appropriate type of switch can be used according to the operating requirements, such as a toggle switch that returns to the off state when pressed again.

In the examples of FIGS. 6 and 7, a configuration is shown in which the component (RFID tag 31) is attracted by using air pressure, but the method of attracting the component is not limited to this, and for example, magnetism of a magnet or the like is applied. It is also possible to use and suck. In this case, depending on the material of the part, there may be something that cannot be attracted by magnetism. Further, for example, when a permanent magnet is used, an additional mechanism for removing the part attracted by the pickup device 10 from the pickup device 10 may be required.

As described above, according to the pickup device 1 according to the second embodiment of the present invention, the small component (or the RFID tag 31 itself) on which the RFID tag 31 is arranged is sucked and picked up by the pickup device 10. During the work process, information is simultaneously read and written to and from the RFID tag 31 via the detection unit 11 formed near the tip of the pickup device 10. This makes it possible to consolidate the reading and writing of information, which was a separate process from the conventional pick-up process of parts, into the pickup process.

Although the invention made by the present inventor has been specifically described above based on the embodiments, the present invention is not limited to the above embodiments and can be variously modified without departing from the gist thereof. Needless to say. For example, the above-described embodiment has been described in detail in order to explain the present invention in an easy-to-understand manner, and is not necessarily limited to the one including all the described configurations. Further, it is possible to replace a part of the configuration of one embodiment with the configuration of another embodiment, and it is also possible to add the configuration of another embodiment to the configuration of one embodiment. .. Further, it is possible to add / delete / replace other configurations with respect to a part of the configurations of each embodiment.

For example, in each of the above embodiments, the pickup device 1 (pickup device 10) shown in the examples of FIGS. It can be widely applied even when it is operated by the mechanism of.

The present invention can be used in a pickup device that picks up an object equipped with an RFID tag.

1 ... Pickup device, 2 ... Higher system, 3 ... Parts,
10 ... Pickup device, 11 ... Detection unit, 12 ... Cable, 12a ... Strip line, 12b ... Coaxial cable core wire, 13 ... Control unit,
31 ... RFID tag,
101a ... upper plate, 101b ... lower plate, 111 ... notch, 112 ... groove, 113 ... pump, 114 ... nozzle, 115 ... suction mechanism, 116 ... power supply, 117 ... air filter, 118a ... suction switch, 118b ... Read switch, 121 ... Signal line, 122 ... Earth line, 123 ... Antenna, 131 ... Antenna part, 132 ... Cable

Claims (5)

A pickup device in which an RFID tag is placed or a component consisting of an RFID tag is picked up.
A pickup device that picks up the parts and
It has a control unit that reads and writes information to the RFID tag, and has.
The pickup device has a detection unit made of a loop-shaped coil in the vicinity of a portion where the component is picked up, and the detection unit and the control unit are connected by a cable.
Wherein, when the user picks up the component by operating the pickup device, have row and writes information with respect to the RFID tag through the detection unit,
The pickup device picks up the component by supporting the component at at least one point near the location and sandwiching the component.
A portion of the pickup device that includes at least one point that supports the component is made of metal, a notch is formed in the vicinity of the metal portion, and a signal line is formed at one end of the notch. Is connected and the ground line is connected to the other end,
Pickup device. In the pickup device according to claim 1,
A pickup device in which the cable is composed of a twisted pair cable including the signal line and the ground line. In the pickup device according to claim 1,
A pickup device in which the cable is configured by a strip line attached to the pickup device with the signal line connected. A pickup device in which an RFID tag is placed or a component consisting of an RFID tag is picked up.
A pickup device that picks up the parts and
It has a control unit that reads and writes information to the RFID tag, and has.
The pickup device has a detection unit formed of a loop-shaped coil in the vicinity of a portion where the component is picked up, and the detection unit and the control unit are connected by a cable.
When the user operates the pickup device to pick up the component, the control unit reads / writes information to the RFID tag via the detection unit.
The pickup device picks up the component by supporting the component at at least one point near the location and sandwiching the component.
A portion of the pickup device that includes at least one point that supports the component is made of metal, a notch is formed in the vicinity of the metal portion, and the cable is at one end of the notch. A pickup device to which the core wires of the coaxial cables that make up the are connected. In the pickup device according to claim 4,
The coaxial cable is a pickup device that is housed along a groove or a through hole provided in the pickup device.

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