Communication device

Abstract

To provide a communication device mainly consisting of a printed circuit board that improves antenna efficiency and facilitate assembly by reducing the number of components.SOLUTION: A communication device 100 mainly consists of a printed circuit board PB on which bendable flexible portions 40 are formed and includes: a first hard portion 10 provided with a communication circuit 11; a second hard portion 20 connected via one or more flexible portions 40 and provided with an antenna 21; and a third hard portion 30 connected to the first hard portion 10 via one flexible portion 40 and provided with an antenna connection line 31 that electrically connects the communication circuit 11 and the antenna 21. The antenna connection line 31 is configured to be substantially perpendicular to a board surface of the first hard portion 10.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a communication device composed of a printed circuit board.

Background Art

[0002] Conventionally, a communication device in which a communication circuit (transmission circuit and / or reception circuit) is provided on a printed circuit board and an antenna is provided in the vicinity of the communication circuit is known. For example, Patent Document 1 discloses a laminated circuit board that has low loss and is easy to assemble when connected to a motherboard or the like. This laminated circuit board is characterized in that a ceramic laminated board and a multilayer board having a flexible wiring portion are integrated. In this board, for a board having a planar antenna, when the antenna surface (the surface on the side where the antenna is arranged on the above board) is mounted on the surface of the motherboard, it is difficult to obtain sufficient radiation characteristics. Therefore, it is connected to the motherboard on the IC surface (the surface on the side where the IC is arranged on the above board), but the problem that the assembly when securing the connection to the above board becomes difficult or the structure becomes complicated is solved.

[0003] Further, Patent Document 2 discloses an antenna device that can increase the number of turns of an antenna pattern formed on a flexible board at low cost without forming through holes. This antenna device includes a flexible board having a first region and a second region, and a magnetic body fixed integrally with the first region and the second region of the flexible board bent at a connecting portion. In the first region, a loop-shaped first antenna pattern is formed. The second region is connected to the first region via a connecting portion and is bent at the connecting portion so that a loop-shaped second antenna pattern is formed to face and overlap the first antenna pattern. In the first region and the second region, connection portions for electrically connecting the first antenna pattern and the second antenna pattern are provided in a state where a magnetic sheet is fixed.

[0004] Furthermore, Patent Document 3 discloses an antenna module for a reader / writer that can ensure isolation between the antenna conductor and the chip-type component and protect the chip-type component from external noise and external stress. The antenna module for the reader / writer uses a flexible substrate having a first base portion, a second base portion, and a bent portion connecting the first base portion and the second base portion. The flexible substrate has a structure that is bent using the flexibility of the bent portion so that the first main surface of the first base portion and the first main surface of the second base portion face each other, and in this bent structure, a magnetic layer is arranged between the antenna conductor and the chip-type component.

[0005] Furthermore, Patent Document 4 discloses an antenna device that can reduce the manufacturing cost of a wiring board by eliminating the need to provide through-holes for forming an antenna pattern across multiple layers in a multilayer wiring board. This antenna device comprises a flexible substrate having an antenna pattern formed by a single conductor layer, an electrical component that communicates input and output signals via the antenna pattern, and a connector that electrically connects the substrates. The antenna pattern is provided with a first connection part and a second connection part. At the first connection part, the antenna pattern is soldered to the terminals of the electrical component and the connector, and at the second connection part, the flexible substrate is inserted into the connector and electrically connected to the terminals of the connector to form a loop antenna.

[0006] Furthermore, Patent Document 5 discloses an antenna device that solves the problem of deterioration of antenna characteristics. This antenna device comprises an antenna substrate on which an antenna connector mounted on a board having a wireless communication circuit is connected, and antenna wiring connected to the contact portion is formed. The antenna substrate is formed to bend so that predetermined surfaces face each other, and on one side of the bending point, a loop antenna portion is located where a part of the antenna wiring is formed in a loop shape, and on the other side of the bending point, a connecting antenna portion and a contact portion are located, which connect the contact portion and the loop antenna portion of the antenna wiring. The antenna substrate is formed such that when the antenna substrate is bent, the contact portion and the loop antenna portion do not overlap each other.

[0007] Furthermore, Patent Document 6 discloses a circuit board that can more accurately match the impedance between an antenna coil and an electronic component electrically connected to the antenna coil. In this circuit board, the main body of the board has two substrate sections and is made up of multiple insulator layers made of a flexible material. The antenna coil is made up of a coil conductor provided on the first substrate section. A wiring conductor is provided on the second substrate section and is electrically connected to the antenna coil. The second substrate section has a structure that is less prone to deformation than the first substrate section. An integrated circuit electrically connected to the wiring conductor is mounted on the second substrate section.

[0008] Furthermore, Patent Document 7 discloses an antenna device that simplifies assembly by realizing a structure in which the linear antenna can stand stably on a circuit board even before it is fixed to the circuit board by soldering. In this antenna device, the linear antenna comprises an antenna body portion that is erected in the space on the circuit board and two leg portions that stand upright on the circuit board and support the antenna body portion. In addition, the linear antenna has two insertion portions that are fixed to the circuit board by soldering in a state in which they diagonally penetrate the antenna mounting holes of the circuit board. Each of the two insertion portions is formed extending diagonally with respect to the thickness direction of the circuit board from each of two bent portions that are bent in opposite directions in the region between the portions of the leg portion that are in contact with the edges on both sides of the antenna mounting hole.

[0009] Although not relating to communication devices, the following prior art exists regarding flexible substrates. For example, Patent Document 8 discloses a circuit board that improves the bending reliability of the bent portion while ensuring the number of wiring layers. This flexible wiring board is provided with a two-layer wiring structure, and the rigid substrate is provided with an M (M is an integer of 3 or more) layer wiring structure, glass epoxy resin is used as the base material for both the flexible wiring board and the rigid substrate, the thickness of the flexible wiring board is set within the range of 110 μm to 190 μm, and the flexible wiring board can be bent 180 degrees or more five times or more.

[0010] Furthermore, Patent Document 9 discloses a method for manufacturing a rigid-flex multilayer printed circuit board that suppresses cracking of the substrate of the flexible substrate even when router bit processing lines (grooves) are formed on the processed surface when the flexible substrate is processed to a bendable thickness by cutting. This manufacturing method is for a rigid-flex multilayer printed circuit board in which resin-impregnated glass cloth is used for the insulating substrate of the rigid substrate and the insulating substrate of the flexible substrate. This manufacturing method includes a step of operating a router and moving it in a direction perpendicular to the bending line of the flexible substrate, and cutting the insulating substrate of the flexible substrate with the drill bit of the router to a bendable thickness to form the flexible substrate. Another document relating to flexible substrates is Patent Document 10. [Prior art documents] [Patent Documents]

[0011] [Patent Document 1] Japanese Patent Publication No. 2019-029669 [Patent Document 2] Japanese Patent Publication No. 2017-017536 [Patent Document 3] International Publication No. 2012 / 036139 [Patent Document 4] Japanese Patent Publication No. 2017-103691 [Patent Document 5] Japanese Patent Publication No. 2013-172220 [Patent Document 6] International Publication No. 2010 / 131524 [Patent Document 7] Japanese Patent Publication No. 2014-014030 [Patent Document 8] Japanese Patent Publication No. 2019-091789 [Patent Document 9] Japanese Patent Publication No. 2018-182215 [Patent Document 10] Japanese Patent Publication No. 2002-158445 [Overview of the project] [Problems that the invention aims to solve]

[0012] This invention provides a communication device composed of a printed circuit board that improves antenna efficiency and reduces the number of components, thereby simplifying assembly. [Means for solving the problem]

[0013] To solve the above problems, a flexible two A communication device comprising a printed circuit board having a flexible portion, comprising: a first rigid portion on which a communication circuit is provided; a second rigid portion on which an antenna is provided; and a third rigid portion connected between the first and second rigid portions via two flexible portions, on which an antenna connection line is provided for electrically connecting the communication circuit and the antenna, wherein the antenna connection line is substantially perpendicular to the substrate surface of the first rigid portion. Furthermore, it is characterized in that the substrate surface of the first rigid part functions as a monopole antenna with the substrate surface as the ground plate. Communication equipment will be provided. According to this, the antenna connection wire provided in the third rigid part, which is connected via two flexible parts between the first rigid part where the communication circuit is provided and the second rigid part where the antenna is provided, is approximately perpendicular to the substrate surface of the first rigid part. Furthermore, it functions as a monopole antenna. This makes it possible to provide a communication device composed of a printed circuit board that improves antenna efficiency, reduces the number of components, and simplifies assembly.

[0014] Furthermore, the substrate surface of the first hardened portion and the substrate surface of the second hardened portion may be characterized by being substantially parallel. According to this, the fact that the substrate surfaces of the first hardened part and the second hardened part are nearly parallel makes it possible to provide a compact communication device.

[0015] Furthermore, the antenna may be provided on the substrate surface of the second rigid part that is further away from the substrate surface of the first rigid part. According to this, the antenna's efficiency can be improved by positioning it on the substrate surface furthest from the first rigid part.

[0016] Furthermore, the communication circuit may be provided on the substrate surface closer to the substrate surface of the second rigid portion in the first rigid portion. According to this, since the communication circuit is provided on the substrate surface closer to the second rigid portion, it becomes possible to provide a compact communication device.

[0017] Furthermore, a housing for housing the printed circuit board is provided, and the length of the third rigid portion in the direction in which the flexible portion is linearly formed is shorter than the lengths of the first rigid portion and the second rigid portion in the direction in which the flexible portion is linearly formed. A groove for receiving the edges of the first rigid portion and the second rigid portion in a direction perpendicular to the direction in which the flexible portion is linearly formed may be provided on the inner wall of the housing. According to this, in the direction in which the flexible portion is linearly formed, the length of the third rigid portion is shorter than the lengths of the first rigid portion and the second rigid portion, and a groove for receiving the edges of the first rigid portion and the second rigid portion is provided on the inner wall of the housing, so that it becomes possible to provide a communication device that is easy to assemble.

[0018] Furthermore, a housing for housing the printed circuit board is provided. By forming the length of the first rigid portion longer than the length of the second rigid portion in a direction perpendicular to the direction in which the flexible portion is linearly formed, a first screw hole is provided in a portion of the first rigid portion that is longer than the second rigid portion. By forming the length of the first rigid portion shorter than the length of the second rigid portion in the direction in which the flexible portion is linearly formed, a second screw hole is provided in a portion of the second rigid portion that is longer than the first rigid portion. Screw holes adapted to the first screw hole and the second screw hole may be provided on the inner wall of the housing. According to this, a first screw hole is provided in a portion where the length of the first rigid portion is formed longer than the length of the second rigid portion in a direction perpendicular to the direction in which the flexible portion is linearly formed. The length of the first rigid portion is formed shorter than the length of the second rigid portion in the direction in which the flexible portion is linearly formed, and a second screw hole is provided in a portion of the second rigid portion that is longer than the first rigid portion. Screw holes adapted to the first screw hole and the second screw hole are provided on the inner wall of the housing, so that it becomes possible to provide a communication device that is easy to assemble.

[0019] Furthermore, the third rigid portion may be characterized by having terminals electrically connected to the communication circuit. According to this, the third rigid part has terminals electrically connected to the communication circuit, which facilitates the transmission and reception of signals with external elements. [Effects of the Invention]

[0020] As described above, the present invention provides a communication device composed of a printed circuit board that improves antenna efficiency, reduces the number of components, and facilitates assembly. [Brief explanation of the drawing]

[0021] [Figure 1] (A) Top view, (B) Bottom view, and (C) Side view of a communication device according to the first embodiment of the present invention. [Figure 2] (A) Perspective view after bending, (B) Schematic side view after bending, of a communication device according to the first embodiment of the present invention. [Figure 3] (A) Perspective view of the communication device of the first embodiment according to the present invention when housed in a housing, and (B) Perspective view when housed in a housing. [Figure 4] A perspective view of the communication device according to the first embodiment of the present invention, when housed in a casing. [Figure 5] A perspective view of a communication device according to a first embodiment of the present invention, when housed in a casing. [Figure 6] (A) A perspective view of a communication device of a modified example 2 of the first embodiment according to the present invention, and (B) a front view of the housing. [Figure 7] (A) Top view, (B) Bottom view, and (C) Side view of a communication device according to a second embodiment of the present invention. [Figure 8] A perspective view of a communication device according to a second embodiment of the present invention, after bending. [Modes for carrying out the invention]

[0022] In the following sections, various embodiments of the communication device according to the present invention will be described with reference to the drawings. <First Example> Referring to Figures 1 to 4, the communication device 100 in this embodiment will be described. Figure 1 shows the communication device 100 in a flat plate shape before bending. The communication device 100 is a communication device composed of a printed circuit board PB. The printed circuit board PB has conductive wiring on or inside an insulating substrate, and electronic components constituting the communication circuit 11 are soldered to the substrate. As will be described in detail below, the printed circuit board PB is composed of a bendable flexible part 40 and a non-bendable flat plate-shaped rigid part 10 / 20 / 30.

[0023] The flexible part 40 is formed sandwiched between the rigid parts 10 / 20 / 30, and the communication device 100 can be constructed three-dimensionally by bending the flexible part 40. The rigid parts 10 / 20 / 30 are rigid parts that can withstand the weight of the mounted electronic components and have the hardness and strength to be fixed to the housing 200. The flexible part 40 is a flexible part that can be bent and is part of the printed circuit board PB, so it has conductive wiring on its surface and inside and has the function of electrically connecting the rigid parts 10 / 20 / 30 on both sides.

[0024] The method for forming the flexible portion 40 and the rigid portions 10 / 20 / 30 is not particularly limited. For example, the printed circuit board PB may be formed by overlapping a flexible substrate made of polyimide or the like and a rigid substrate that does not have flexibility, and then the flexible portion 40 may be formed by later removing the rigid substrate (rigid layer) so that only the flexible substrate (flexible layer) remains. Alternatively, the printed circuit board PB may be formed using only the rigid substrate, and the flexible portion 40 may be formed by removing the rigid substrate until it reaches a thickness that allows it to be bent.

[0025] The communication device 100 comprises a first rigid section 10 on which a communication circuit 11 is provided, a second rigid section 20 on which a loop antenna 21 is provided, and a third rigid section 30 on which an antenna connection line 31 is provided that electrically connects the communication circuit 11 and the loop antenna 21. The communication device 100 has one linear flexible section 40 between the first rigid section 10 and the third rigid section 30, and one linear flexible section 40 between the third rigid section 30 and the second rigid section 20. Therefore, the third rigid section 30 is connected to the first rigid section 10 via one flexible section 40, and the second rigid section 20 is connected to the first rigid section 10 via two flexible sections 40.

[0026] In the communication device 100, a third rigid part 30 is provided next to the first rigid part 10, and a second rigid part 20 is provided next to the third rigid part 30 in the opposite direction from the first rigid part 10, but the device is not limited to this. For example, the second rigid part 20 may be connected via three flexible parts 40. That is, there may be another rigid part between the second rigid part 20 and the third rigid part 30, and these may be connected to the first rigid part 10. Also, in this embodiment, the second rigid part 20 is provided in the opposite direction from the first rigid part 10 (to the right of the third rigid part 30 in Figure 1(A)), but it may be provided above or below the third rigid part 30 (in the same figure). The width of the flexible part 40 is appropriately determined from the thickness of the printed circuit board PB and the angle at which it is bent.

[0027] The first rigid section 10 has a communication circuit 11 mounted on its upper side (Figure 1(A)). The communication circuit 11 may consist only of a transmitting circuit, only a receiving circuit, or both a transmitting and receiving circuit, and is composed of an IC chip containing these circuits as appropriate. The first rigid section 10 does not have any circuits on its bottom side (Figure 1(B)), but a through-hole 13 is provided to electrically connect the top and bottom sides (Figure 1(C)). The upper side of the first rigid section 10, on which the communication circuit 11 is mounted, will be on the inside when the printed circuit board PB is bent at the two flexible sections 40 to assemble the communication device 100.

[0028] The second rigid section 20 has a loop antenna 21 provided as conductive wiring on the substrate surface on its bottom side (Figure 1(B)). The loop antenna 21 improves antenna efficiency by exciting the wire through the gap in the loop. The antenna provided on the second rigid section 20 is not limited to a loop antenna; S-shaped antennas, L-shaped antennas, etc., are acceptable as long as they can secure an antenna length corresponding to the desired frequency and wavelength. The bottom side of the second rigid section 20 on which the loop antenna 21 is mounted will be on the outside when the printed circuit board PB is bent by the two flexible sections 40 to assemble the communication device 100.

[0029] The third rigid section 30 has an antenna connection line 31 provided as a conductive wiring on the substrate surface on the bottom side (Figure 1(B)). The antenna connection line 31 is electrically connected to the communication circuit 11 via a through-hole 13 and the flexible section 40 on one side (left side in the diagram). It is also electrically connected to the loop antenna 21 via the flexible section 40 on the other side (right side in the diagram). The communication circuit 11, the antenna connection line 31, and the loop antenna 21 are electrically connected in series. The antenna connection line 31 is wired perpendicular to the flexible section 40.

[0030] As shown in Figure 2(A), the communication device 100 is formed by bending the flat printed circuit board PB shown in Figure 1 at a 90-degree angle at two flexible parts 40. As a result of bending, the substrate surface of the third rigid part 30 is substantially perpendicular to the substrate surface of the first rigid part 10, and the substrate surface of the second rigid part 20 is substantially perpendicular to the substrate surface of the third rigid part 30 and substantially parallel to the substrate surface of the first rigid part 10. This makes it possible to provide a compact communication device 100. Furthermore, because the substrate surface of the third rigid part 30 is substantially perpendicular to the substrate surface of the first rigid part 10, the antenna connection line 31 is substantially perpendicular to the substrate surface of the first rigid part 10.

[0031] As a result, the antenna connection line 31 functions as a monopole antenna with the substrate surface of the first rigid part 10 as the ground plane. In this way, the antenna connection line 31 provided on the third rigid part 30, which is connected to the first rigid part 10 on which the communication circuit 11 is provided via the flexible part 40, is almost perpendicular to the substrate surface of the first rigid part 10. This improves the efficiency of the antenna and reduces the number of parts, making assembly easier, thus providing a communication device 100 that does not require any other parts. In this embodiment, the flexible part 40 is formed to be located on the outside of the bendable portion as shown in Figure 2(B), but it is not limited to this and may be formed to be located on the inside.

[0032] As shown in Figure 2(A), the loop antenna 21 is provided on the outer side (upper side in the diagram) of the second rigid part 20, that is, on the substrate surface furthest from the substrate surface of the first rigid part 10. This makes it easier to send and receive radio waves toward or from the outside of the communication device 100, thereby improving the efficiency of the antenna. The communication circuit 11 is provided on the inner side (upper side in the diagram) of the first rigid part 10, that is, on the substrate surface closer to the substrate surface of the second rigid part 20. This allows the communication circuit 11 to be housed in the inner space, providing a compact communication device 100.

[0033] As shown in Figure 3, the communication device 100 is housed in the housing 200 in a folded state as shown in Figure 2(A). In this embodiment, the first rigid part 10 is assembled by sliding it along the inside of the bottom surface of the housing 200, with the third rigid part 30 facing the back and the loop antenna 21 facing the top. After this, the communication device 100 is completed by closing the lid of the housing 200. Note that, as shown in Figure 4, if the third rigid part 30 has a terminal 32 electrically connected to the communication circuit 11, it is preferable to assemble the first rigid part 10 by sliding it along the inside of the bottom surface of the housing 200, with the third rigid part 30 facing the front and the loop antenna 21 facing the top. Providing terminal holes (not shown) in the lid of the housing 200 makes it easy to send and receive signals with external elements.

[0034] <Modification 1 of the first embodiment> Referring to Figure 5, Modification 1 of this embodiment will be described. The communication device 100 of Modification 1 is the same as in the above embodiment in that it comprises a first rigid part 10 on which a communication circuit 11 is provided, a second rigid part 20 on which a loop antenna 21 is provided, and a third rigid part 30 on which an antenna connection line 31 is provided that electrically connects the communication circuit 11 and the loop antenna 21. The difference is that in the above embodiment, the sizes of the first rigid part 10 and the second rigid part 20 were almost the same, but this is different. That is, in the direction perpendicular to the direction in which the flexible part 40 is formed linearly, the length L1 of the first rigid part 10 is formed to be longer than the length l2 of the second rigid part 20. As a result, a first screw hole (not shown) can be provided in the portion of the first rigid part 10 that is longer than the second rigid part 20. Then, by providing a screw hole that fits the first screw hole in the inner wall of the housing 200, it is possible to provide a communication device 100 that is easy to assemble.

[0035] Furthermore, preferably, in the direction in which the flexible portion 40 is formed linearly, the length of the first rigid portion 10 may be shorter than the length of the second rigid portion 20. This allows a second screw hole (not shown) to be provided in the portion of the second rigid portion 20 that is longer than the first rigid portion 10. Then, by providing a screw hole that fits the second screw hole in the inner wall of the housing 200, it becomes possible to provide a communication device 100 that is easy to assemble.

[0036] <Modification 2 of the first embodiment> Referring to Figure 6, a second modification of this embodiment will be described. The communication device 100 of the second modification is the same as in the above embodiment in that it comprises a first rigid part 10 on which a communication circuit 11 is provided, a second rigid part 20 on which a loop antenna 21 is provided, and a third rigid part 30 on which an antenna connection line 31 is provided that electrically connects the communication circuit 11 and the loop antenna 21. The difference is that in the above embodiment, the lengths (in the diagram) of the first rigid part 10 and the second rigid part 20 and the length of the third rigid part 30 were approximately the same, but this is different. That is, the length L2 of the third rigid part 30 in the direction in which the flexible part 40 is formed linearly is shorter than the length L1 of the first rigid part 10 and the second rigid part 20 in the direction in which the flexible part 40 is formed linearly. Furthermore, the inner wall of the housing 200 is provided with grooves 210 that receive the edge 12 of the first rigid part 10 and the edge 22 of the second rigid part 20, in a direction perpendicular to the direction in which the flexible part 40 is formed linearly. The assembly is carried out by fitting the edges 12 and 22 into the grooves 210 and sliding them in, with the third rigid part 30 facing the back and the loop antenna 21 facing the top.

[0037] Thus, in the direction in which the flexible portion 40 is formed linearly, the length of the third rigid portion 30 is shorter than the length of the first rigid portion 10 and the length of the second rigid portion 20, and grooves 210 are provided in the inner wall of the housing 200 to receive the edge 12 of the first rigid portion 10 and the edge 22 of the second rigid portion 20, making it possible to provide a communication device 100 that is easy to assemble.

[0038] <Second Example> Referring to Figures 7 to 8, the communication device 100A in this embodiment will be described. To avoid duplication, the same reference numerals are used for components that are the same as in the above embodiment, and their descriptions are omitted. The communication device 100A is a communication device composed of a printed circuit board PB. The communication device 100A comprises a first rigid part 10A on which a communication circuit 11 is provided, a second rigid part 20 on which a loop antenna 21 is provided, and a third rigid part 30 on which an antenna connection line 31 is provided that electrically connects the communication circuit 11 and the loop antenna 21.

[0039] Since the first rigid section 10A has the communication circuit 11 mounted on the bottom side (Figure 7(B)) on the same side as the loop antenna 21 of the second rigid section 20, the through-hole 13 that was provided in the above embodiment is not necessary and is therefore not provided. The bottom side of the first rigid section 10A on which the communication circuit 11 is mounted will be on the outside when the printed circuit board PB is bent at the two flexible sections 40 to assemble the communication device 100A.

[0040] The second rigid section 20 has a loop antenna 21 that is provided as conductive wiring on the substrate surface on its bottom side (Figure 7(B)). The bottom side of the second rigid section 20 on which the loop antenna 21 is mounted will be on the outside when the printed circuit board PB is bent by the two flexible sections 40 to assemble the communication device 100A.

[0041] The third rigid part 30 has an antenna connection wire 31 as a conductive wiring on the substrate surface on the bottom side (Figure 7(B)). The antenna connection wire 31 is electrically connected to the communication circuit 11 via one flexible part 40 (left side in the diagram) and electrically connected to the loop antenna 21 via the other flexible part 40 (right side in the diagram). The communication circuit 11, the antenna connection wire 31, and the loop antenna 21 are electrically connected in series on the outside when the communication device 100A is assembled. The antenna connection wire 31 is wired perpendicular to the flexible part 40.

[0042] As shown in Figure 8, the communication device 100A is formed by bending the flat printed circuit board PB shown in Figure 7 at a 90-degree angle by two flexible parts 40. As a result of bending, the substrate surface of the third rigid part 30 is almost perpendicular to the substrate surface of the first rigid part 10A, and the substrate surface of the second rigid part 20 is almost parallel to the substrate surface of the first rigid part 10A. This makes it possible to provide a compact communication device 100A. However, since the communication circuit 11 is located on the outside when assembled, space is required between the first rigid part 10A and the housing 200 to accommodate the communication circuit 11 when housing it in the housing 200.

[0043] Furthermore, since the substrate surface of the third rigid part 30 is substantially perpendicular to the substrate surface of the first rigid part 10A, the antenna connection line 31 is substantially perpendicular to the substrate surface of the first rigid part 10A. As a result, the antenna connection line 31 functions as a monopole antenna with the substrate surface of the first rigid part 10A as the ground plane. In this way, by having the antenna connection line 31 provided on the third rigid part 30, which is connected to the first rigid part 10A on which the communication circuit 11 is provided via the flexible part 40, substantially perpendicular to the substrate surface of the first rigid part 10A, it is possible to provide a communication device 100A that improves antenna efficiency, reduces the number of parts by eliminating the need for other components, and simplifies assembly.

[0044] It should be noted that the present invention is not limited to the exemplary embodiments, and can be implemented in configurations that do not depart from the content described in each claim. In other words, although the present invention is illustrated and described in particular with respect to specific embodiments, those skilled in the art can make various modifications to the embodiments described above in terms of quantity and other detailed configurations without departing from the scope of the technical idea and objectives of the present invention. [Explanation of symbols]

[0045] 100 Communication devices 10 1st hard part 11 Communication Circuit 12 Edge 13 Through Holes 20 2nd hard part 21 Loop Antenna 22 En 30 3rd hard part 31 Antenna connection cable 32 terminals 40 Flexibility section 200 cabinets 210 Groove PB Printed Circuit Board

Claims

1. A communication device comprising a printed circuit board having two flexible parts that can be bent, A first hard part equipped with a communication circuit, The second rigid section is equipped with an antenna, A third rigid part is connected between the first rigid part and the second rigid part via two flexible parts, and is provided with an antenna connection line that electrically connects the communication circuit and the antenna. Equipped with, The communication device is characterized in that the antenna connection line is substantially perpendicular to the substrate surface of the first rigid part and functions as a monopole antenna with the substrate surface of the first rigid part as the ground plate.

2. A communication device comprising a printed circuit board having two flexible parts that can be bent, A first hard part equipped with a communication circuit, The second rigid section is equipped with an antenna, A third rigid part is connected between the first rigid part and the second rigid part via two flexible parts, and is provided with an antenna connection line that electrically connects the communication circuit and the antenna. Equipped with, The antenna connection wire is substantially perpendicular to the substrate surface of the first rigid part. The substrate surface of the first hardened part and the substrate surface of the second hardened part are substantially parallel. The communication device is characterized in that the third rigid part has a terminal electrically connected to the communication circuit.

3. A communication device comprising a printed circuit board having two flexible parts that can be bent, A first hard part equipped with a communication circuit, The second rigid section is equipped with an antenna, A third rigid part is connected between the first rigid part and the second rigid part via two flexible parts, and is provided with an antenna connection line that electrically connects the communication circuit and the antenna. Equipped with, The antenna connection wire is substantially perpendicular to the substrate surface of the first rigid part. The substrate surface of the first hardened part and the substrate surface of the second hardened part are substantially parallel. It has an enclosure for housing a printed circuit board, In a direction perpendicular to the direction in which the flexible portion is formed linearly, the length of the first rigid portion is formed to be longer than the length of the second rigid portion, and a first screw hole is provided in the portion of the first rigid portion that is longer than the second rigid portion. In the direction in which the flexible portion is formed linearly, the length of the first rigid portion is formed to be shorter than the length of the second rigid portion, and a second screw hole is provided in the portion of the second rigid portion that is longer than the first rigid portion. The inner wall of the housing is provided with screw holes that fit the first screw hole and the second screw hole. A communication device characterized by the following features.

4. The substrate surface of the first hardened portion and the substrate surface of the second hardened portion are substantially parallel, The communication device according to claim 1, characterized in that the antenna is provided on the substrate surface of the second rigid portion that is farther from the substrate surface of the first rigid portion.

5. The substrate surface of the first hardened portion and the substrate surface of the second hardened portion are substantially parallel, The communication device according to claim 1, characterized in that the communication circuit is provided on the substrate surface of the first hard part that is closer to the substrate surface of the second hard part.

6. The substrate surface of the first hardened portion and the substrate surface of the second hardened portion are substantially parallel, It has an enclosure for housing a printed circuit board, The length of the third rigid portion in the direction in which the flexible portion is formed linearly is shorter than the length of the first rigid portion and the length of the second rigid portion in the direction in which the flexible portion is formed linearly. The inner wall of the housing is provided with grooves that receive the edges of the first rigid portion and the second rigid portion, in a direction perpendicular to the direction in which the flexible portion is formed linearly. The communication device according to feature 1.

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