JP5299320B2 - antenna - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a configuration capable of stably holding a shape after bending a bendable antenna arranging a conductor to a flexible board. <P>SOLUTION: In the antenna 60, bent parts 66 are formed to at least parts of the flexible board 60a. In the bent parts 66, parts 64 to be bent continuing to specified parts 63 are formed in the configuration bent in the different direction to the direction of the specified parts 63, and projecting pieces 70 projected to the bending side of the parts 64 to be bent are formed to the specified parts 63. The parts 64 to be bent to the specified parts 63 are engaged by abutting the parts 64 against the projecting pieces 70. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to an antenna.

  Currently, portable terminals that perform non-contact communication using non-contact communication technology are widely provided. This type of mobile terminal generally includes an antenna and a communication circuit that communicates with a non-contact communication medium (for example, an IC card) through the antenna, and transmits and receives radio waves via the antenna to thereby provide a non-contact communication medium. Reading and writing.

  By the way, in the current communication device, with the progress of miniaturization of the device, the space limitation in installing the antenna is increasing. For example, in the above-described portable terminal, a loop antenna or the like is preferably used as an antenna. However, with the miniaturization of the terminal, it is required to appropriately arrange the loop antenna in a limited space in the apparatus. .

  As described above, when the space restriction in the device is large, it is desirable to arrange the antenna by bending it. For example, when the loop antenna is used, if a predetermined portion can be bent and arranged in accordance with the arrangement location, the degree of freedom in arranging the antenna increases, which is advantageous in design. As a technique relating to the bending of the loop antenna, a technique as disclosed in Patent Document 1 is provided.

Japanese Utility Model Publication No. 5-2425

  When the loop antenna is bent and used, or when the conductor is not limited to the loop antenna and is used as an antenna, it is desirable to use a flexible substrate that can be bent easily as a base for holding the conductor. However, in the case of such a flexible substrate, although it is easy to bend, there is a problem that it is difficult to keep the shape after being bent to a desired shape. When such a shape change occurs, the antenna characteristics change, so some countermeasure is required.

  The present invention has been made to solve the above-described problems, and provides a configuration capable of stably holding a bent shape in a bendable antenna in which a conductor is disposed on a flexible substrate. Objective.

The invention of claim 1
An antenna comprising a flexible substrate configured to be bendable and having a conductor disposed on at least a part of the flexible substrate,
At least a part of the flexible substrate is formed with a bent portion that bends the part to be bent following the predetermined part in a direction different from the direction of the predetermined part,
The predetermined portion is provided with a protruding piece protruding to the bending side of the bending target portion,
The protruding piece is
An extending portion extending from the predetermined portion to the bending side of the bending target portion;
A bent portion bent in a lateral direction with respect to the extending direction of the extending portion;
With
The bent portion that is bent with respect to the predetermined portion is configured to be locked by contacting at least the bent portion of the protruding piece ,
The flexible substrate includes a plate-like base material and the conductor is held along the base material,
The protruding piece is made of a highly rigid member having higher rigidity than the base material,
The high-rigidity member is provided with a reinforcing portion that extends toward the bent portion with respect to the extending position of the extending portion .

The invention of claim 2
An antenna comprising a flexible substrate configured to be bendable and having a conductor disposed on at least a part of the flexible substrate,
At least a part of the flexible substrate is formed with a bent portion that bends the part to be bent following the predetermined part in a direction different from the direction of the predetermined part,
The predetermined portion is provided with a protruding piece protruding to the bending side of the bending target portion,
The folding target portion that is bent with respect to the predetermined portion is configured to be locked by contacting the protruding piece,
In the bending target portion, a protrusion protruding in the thickness direction or the plate surface direction of the bending target portion is formed,
The predetermined contact surface of the protruding piece is configured to contact the bending target portion,
The protrusion is configured to be able to support a surface different from the contact surface of the protruding piece.

According to a first aspect of the present invention, there is provided a flexible substrate configured to be bendable, and an antenna in which a conductor is disposed on at least a part of the flexible substrate. A bent portion is formed to bend in a direction different from the direction of the predetermined portion. The predetermined portion is provided with a protruding piece that protrudes toward the bending side of the portion to be bent, and the bent portion that is bent with respect to the predetermined portion is locked by contacting the protruding piece. It has become. If it does in this way, since a conductor can be arrange | positioned on a flexible substrate and can be comprised, it can arrange | position with a higher freedom degree. Furthermore, since the portion to be bent that is bent with respect to the predetermined portion is locked by contacting the protruding piece, the bent portion is difficult to return to the position before the bending, and the shape after the bending is stably maintained. can do.
Further, the projecting piece is provided with an extending portion extending from the predetermined portion to the bending side of the portion to be bent, and a bent portion that is bent laterally with respect to the extending direction of the extending portion. The portion is locked by contacting at least the bent portion. If it does in this way, since a bending object part can be locked by a part (bending part) bent with respect to a bending side, it can hold down a bending object part more certainly.
In addition, a plate-like base material is provided on the flexible substrate, a conductor is held along the base material, and the protruding piece is configured by a highly rigid member having higher rigidity than the base material. If it does in this way, even if the restoring force of a base material is applied, since a protrusion piece becomes difficult to deform | transform, the shape of a protrusion piece is easily hold | maintained stably, and it can maintain a latching state favorable by extension.
Further, the high-rigidity member is provided with a reinforcing portion that extends toward the bent portion with respect to the extending position of the extending portion. If it does in this way, the part from an extension part to a fold line can be reinforced with a reinforcement part, and the shape from the extension part to a fold line (the part which is not bent) can be held stably.
According to the second aspect of the present invention, a protrusion that protrudes in the thickness direction or the plate surface direction of the bending target portion is formed in the bending target portion. The predetermined contact surface of the protruding piece is configured to contact the bending target portion, and the protrusion can support a surface different from the contact surface of the protruding piece. In this way, the portion to be bent is brought into contact with the predetermined contact surface of the protruding piece, and in addition to the lock, the protrusion is also supported by supporting a portion other than the predetermined contact surface. Become. In other words, since the protrusions are locked at a plurality of different positions, the locked state between the bending target portion and the protruding piece can be more stably maintained.
According to the invention of claim 3, the part to be bent can be bent along a bending line inclined with respect to the direction of arrangement of the predetermined part, and the end of the reinforcing part is arranged along the bending line. If it does in this way, it will become easy to maintain the shape from the extension part to a fold line (the part which is not bent) in a more suitable shape, and also bend the part to be bent more accurately and easily along a fold line. Will be able to.

According to a fourth aspect of the present invention, the protruding piece is provided with an extending portion that extends from a predetermined portion to the bending side of the portion to be bent, and a bent portion that is bent laterally with respect to the extending direction of the extending portion. The portion to be bent is locked by contacting at least the bent portion. If it does in this way, since a bending object part can be locked by a part (bending part) bent with respect to a bending side, it can hold down a bending object part more certainly.

According to a fifth aspect of the present invention, a plate-like base material is provided on the flexible substrate, the conductor is held along the base material, and the protruding piece is constituted by a highly rigid member having higher rigidity than the base material. In this way, even if a restoring force is applied to the base material (a restoring force that causes the folding target portion to return to the shape before folding), the protruding piece is difficult to deform, so the shape of the protruding piece is stable. It is easy to be held, and as a result, the locked state can be kept good.

  In the invention of claim 6, the high-rigidity member is made of the same material as the base material and is thicker than the base material. If it does in this way, the protrusion piece with higher rigidity than a base material can be comprised with the same material as a base material, and it becomes more advantageous on manufacture.

  In the invention of claim 7, the adhesive medium is attached to the contact position of the protruding piece with the part to be bent. If it does in this way, since an adhesion medium can be interposed between a bending object part and a projection piece, these contact states can be maintained more stably and it becomes easier to hold a bent shape.

FIG. 1A is a plan view schematically illustrating a non-contact communication terminal equipped with an antenna according to a reference example , and FIG. 1B is an IC card in the non-contact communication terminal of FIG. It is explanatory drawing explaining a mode that hesitated. FIG. 2 is a block diagram schematically illustrating an electrical configuration of the contactless communication terminal of FIG. FIG. 3A is a plan view schematically illustrating an antenna according to a reference example , and FIG. 3B is a side view of the antenna of FIG. FIG. 4A is a plan view illustrating the configuration of the antenna according to the reference example before bending, and FIG. 4B is a side view of the configuration. FIG. 5 (A) is an enlarged view schematically showing a configuration before bending in the vicinity of a portion to be bent, and FIG. 5 (B) is an enlarged view schematically showing a configuration after bending of the portion. is there. FIG. 6 is an enlarged view showing a part of the antenna of FIG. FIG. 7A is an enlarged view schematically showing a configuration before bending of a part of the antenna according to the first embodiment (near the part to be bent), and FIG. 7B shows bending of that part. It is an enlarged view which shows a back structure roughly. FIG. 8 is an enlarged view schematically showing the configuration near the bent portion of the antenna according to the second embodiment. FIG. 9 is an enlarged view schematically showing a configuration in the vicinity of a bent portion of a modified example in which a part of the antenna according to the second embodiment is modified.

[ Reference example ]
Hereinafter, reference examples will be described with reference to the drawings.
(Non-contact communication terminal)
First, a non-contact communication terminal to which an antenna according to a reference example is applied will be described.
FIG. 1A is a plan view schematically illustrating a non-contact communication terminal equipped with an antenna according to a reference example , and FIG. 1B is an IC card in the non-contact communication terminal of FIG. It is explanatory drawing explaining a mode that cheated Ca. FIG. 2 is a block diagram schematically illustrating an electrical configuration of the contactless communication terminal of FIG.

  A non-contact communication terminal 1 shown in FIG. 1 is configured as a mobile terminal that is carried by a user and used in various places, for example, and reads a non-contact communication medium such as a wireless tag or an IC card attached to a product or the like. It has a function as a wireless reader. The non-contact communication terminal 1 in FIG. 1 also has a function as a code reader that reads an information code attached to a product or the like.

  As shown in FIG. 2, the non-contact communication terminal 1 includes a control circuit 10 that performs overall control. The control circuit 10 includes a wireless reader unit 20, a memory 11, a key operation unit 12, a display unit 13, An external interface 14, a battery 15, a power supply unit 16, and the like are connected.

  The control circuit 10 is composed mainly of a microcomputer, has a CPU, a system bus, an input / output interface, and the like, and functions as an information processing device together with the memory 11. The memory 11 is configured by a known semiconductor memory such as a ROM, a RAM, and a nonvolatile memory, and is configured to be able to store various types of information. The key operation unit 12 includes a plurality of keys, and is configured to give an operation signal to the control circuit 10 according to a user's key operation. The control circuit 10 is operated from the key operation unit 12. When a signal is received, an operation corresponding to the operation signal is performed. The display unit 13 includes a liquid crystal display, an LED, and the like, and functions to perform various displays. The external interface 14 is configured as an interface for performing data communication with the outside (for example, a host device), and is configured to perform communication processing in cooperation with the control circuit 10. In addition, the non-contact communication terminal 1 is provided with a battery 15 and a power supply unit 16 that serve as a power source, and power is supplied to the control circuit 10 and various electrical components.

As shown in FIG. 2, a wireless reader unit 20 and a code reading unit 30 are connected to the control circuit 10.
The wireless reader unit 20 cooperates with the control circuit 10 to perform electromagnetic wave communication with a wireless communication medium (IC card or the like), read data stored in the wireless communication medium, or data to the wireless communication medium. Functions to write. The wireless reader unit 20 is configured as a circuit that performs transmission by a known radio wave method, for example, and includes a transmission circuit 21, a reception circuit 22, a matching circuit 23, and the like as shown in FIG.

  The transmission circuit 21 includes a carrier oscillator, an encoding unit, an amplifier, a transmission unit filter, a modulation unit, and the like, and is configured to output a carrier (carrier wave) having a frequency of 13.56 MHz, for example, from the carrier oscillator. The encoding unit is connected to the control circuit 10 and is configured to encode transmission data output from the control circuit 10 and output the transmission data to the modulation unit.

  The modulation unit receives a carrier (carrier wave) from the carrier oscillator and transmission data from the encoding unit, and encodes the carrier (carrier wave) output from the carrier oscillator when transmitting a command to the communication target. A modulated signal that is ASK (Amplitude Shift Keying) modulated by the encoded transmission code (modulated signal) output from the encoding unit is generated and output to the amplifier. The amplifier amplifies the input signal (the modulated signal modulated by the modulation unit) with a predetermined gain, and outputs the amplified signal to the transmission unit filter. The transmission unit filter outputs the amplified signal from the amplifier. The filtered transmission signal is output to the antenna 60 via the matching circuit 23. When a transmission signal is output to the antenna 60 in this way, the transmission signal is radiated to the outside from the antenna 60 as an electromagnetic wave.

  On the other hand, the radio wave signal received by the antenna 60 is input to the receiving circuit 22 via the matching circuit 23. The reception circuit 22 is configured by a reception unit filter, an amplifier, a demodulation unit, a binarization processing unit, a decoding unit, and the like, and after filtering a signal received via the antenna 60 with a reception unit filter, The signal is amplified by an amplifier, and the amplified signal is demodulated by a demodulator. Then, the demodulated signal waveform is binarized by the binarization processing unit, decoded by the decoding unit, and the decoded signal is output to the control circuit 10 as received data.

  The information code reading unit 30 includes a light receiving sensor composed of a solid-state imaging device such as a CCD area sensor, an imaging lens, an illumination unit composed of a plurality of LEDs, and the like, and cooperates with the control circuit 10. It works and functions as a code reader.

(Antenna configuration)
Next, a specific configuration of the antenna will be described. FIG. 3A is a plan view schematically illustrating an antenna according to a reference example , and FIG. 3B is a side view of the antenna of FIG. FIG. 4A is a plan view illustrating the configuration of the antenna according to the reference example before bending, and FIG. 4B is a side view of the configuration. FIG. 5 (A) is an enlarged view schematically showing a configuration before bending in the vicinity of a portion to be bent, and FIG. 5 (B) is an enlarged view schematically showing a configuration after bending of the portion. is there. FIG. 6 is an enlarged view showing a configuration in the vicinity of a part (folded holding portion) of the antenna of FIG. 3 and 4, the protruding piece is omitted.

The antenna 60 according to the reference example has a final shape as shown in FIGS. The antenna 60 is configured by a flexible substrate 60a configured to be bendable, and functions as a loop antenna as a whole. The flexible substrate 60a constituting the antenna 60 includes a plate-like base material 61 configured to be able to be bent and deformed and bendable, and a conductor 62 disposed on the base material 61. A conductor 62 made of a metal wire or the like is disposed along the plate surface of the base material 61.

  For example, the antenna 60 is formed in an annular shape by bending a flexible substrate 60a as shown in FIGS. 4A and 4B as shown in FIGS. The base material 61 constituting the flexible substrate 60a is made of, for example, a dielectric material such as resin, and has a thin plate shape that can be bent and deformed. The conductor 62 functions as a portion that radiates radio waves, and is configured in a linear shape that can be bent and deformed. The conductor 62 is wound around the base member 61 one or more times.

  As shown in the enlarged view of FIG. 6, the flexible substrate 60a constituting the antenna 60 has bent portions 66 formed at a plurality of locations. The bent portion 66 is a portion formed by bending a bending target portion 64 following a predetermined linear portion (predetermined portion) 63 in a direction different from the direction of the linear portion 63. Specifically, from the initial shape (shape before bending) as shown in FIG. 5A, the direction of the bending target portion 64 is approximately 90 with respect to the direction of the linear portion 63 as shown in FIG. 5B. The first surface 63a of the linear portion 63 and the first surface 64a of the bending target portion 64 are folded back in a valley fold shape when viewed from the one surface 61a side so as to be at 0 °. . Then, as shown in FIG. 5B, after the folding, on the one surface side of the linear portion 63 (specifically, on the one surface 63 a side facing the folding target portion 64), the opposite surface of the folding target portion 64. 64b (surface on the opposite side to the one surface 64a side which opposes the linear part 63) is distribute | arranged so that it may face. In FIGS. 4A and 5A, a folding line L for configuring the folding portion 66 is conceptually indicated by a broken line.

  Further, the linear portion 63 is provided with a protruding piece 70 that protrudes to the bending side of the bending target portion 64 (the lower side of the drawing in the example of FIG. 5). The protruding piece 70 is, for example, a highly rigid member having higher rigidity than the base material 61 (for example, a member made of the same material as the base material 61 and thicker than the base material 61, or more elastic than the base material 61. A member made of a material having a high rate), and is less elastically deformed than the base material 61.

  For example, the protruding piece 70 is formed in a plate shape and is fixed to one surface 63a of the linear portion 63 with an adhesive or the like, and extends from the linear portion 63 to the folding side of the bending target portion 64. The extending portion 71 and the bent portion 72 that bends in the lateral direction with respect to the extending direction of the extending portion 71 are provided, and are configured in an L shape as a whole. The extending portion 71 is disposed, for example, in the vicinity of the bending portion 66 so as to be adjacent to the position after the bending target portion 64 is bent. More specifically, the extending part 71 extends along the direction after the bending of the part 64 to be bent. In the example of FIG. 5B, the extending part 71 extends along a direction orthogonal to the direction of the linear part 63. The portion 71 is arranged, and the bending target portion 64 extends along the extending direction of the extending portion 71.

  Further, as shown in FIG. 5B, the bent portion 72 bends from the vicinity of the distal end portion of the extending portion 71 toward the bending target portion 64 side and partially covers the opposite surface 64b side of the bending target portion 64. The distal end portion 72a is arranged at a position near the side portion 64c of the bent portion 64 or a position protruding slightly outward from the side portion 64c.

  The projecting piece 70 configured as described above is arranged in a state of being fixed to the linear portion 63, and comes into contact with a bending target portion 64 that is bent with respect to the linear portion 63. Specifically, the opposite surface 64b of the bending target portion 64 is in contact with the opposite surface of the bent portion 72 (the surface that is bonded to the linear portion 63 and the surface opposite to the one surface 70a). The folding target portion 64 is locked, so that the bent shape is maintained. More specifically, the portion 64 to be bent is inserted into the back side of the projecting piece 70 connected to the one surface 63a of the linear portion 63 (the side opposite to the one surface 70a). ) To be bent is supported by the bent portion 72 of the projecting piece 70.

  Such bending is performed at a plurality of locations (four locations in FIG. 4) with respect to a member having an initial shape as shown in FIG. 4, and the same bending is performed at each location. For example, FIG. 6 shows an example in which the above-described bending is performed at two locations on one side in the longitudinal direction of the member of FIG. 4, and one linear portion 63 (left side in the drawing) and the other are bent by the two locations. The straight line portion (the right side of the drawing) is aligned linearly in the same direction. Further, the same bending as in FIG. 6 is also performed at two places on the other side in the longitudinal direction of the member of FIG. 4, so that a peripheral wall-like and substantially cylindrical antenna 60 is configured as shown in FIG. It has become. The antenna 60 has an annular structure in which the folding of each folded portion 66 as shown in FIG. 6 is stably maintained by the above-described locking structure.

  The antenna 60 is arranged around the display unit 13 as shown in FIGS. 1 and 3, for example. As shown in FIG. 3, the antenna 60 is configured in a cylindrical shape by the above-described bending structure, and in the example of FIGS. 1 and 3, the display unit 13 is arranged in a form accommodated in the cylinder. Yes. More specifically, the inner wall surface of the antenna 60 is arranged along the direction perpendicular to the display surface of the display unit 13, and the antenna 60 is arranged as a peripheral wall surrounding the display unit 13.

(Main effects of the reference example )
In the antenna 60 according to the reference example , a bent portion 66 is formed in a part of the flexible substrate 60a, and the bending target portion 64 following the linear portion 63 (predetermined portion) is oriented differently from the direction of the linear portion 63. Is bent. The linear portion 63 is provided with a protruding piece 70 that protrudes toward the bending side of the bending target portion 64, and the bending target portion 64 that is bent with respect to the linear portion 63 contacts the protruding piece 70. So that it can be locked. In this way, the conductor 62 can be arranged on the flexible substrate 60a and bendable, so that it can be arranged with a higher degree of freedom. Furthermore, since the folding target portion 64 that is bent with respect to the linear portion 63 is locked by coming into contact with the protruding piece 70, the folding target portion 64 is unlikely to return to the position before bending, and the shape after bending. Can be held stably.

The antenna 60 according to the reference example includes, in the protruding piece 70, an extending portion 71 extending from the linear portion 63 to the bending side of the bending target portion 64, and a lateral direction with respect to the extending direction of the extending portion 71. And a bending portion 72 that bends at the bending portion 72 so that the bending target portion 64 is locked by being brought into contact with at least the bending portion 72. In this way, the bent portion 64 can be locked by the bent portion (bent portion 72) with respect to the bent side, so that the bent portion 64 is more easily caught when trying to return to the initial shape. It becomes easier and can be held down more reliably.

In the reference example , a plate-like base material 61 is provided on the flexible substrate 60 a and a conductor 62 is held along the base material 61. The protruding piece 70 is configured by a highly rigid member having higher rigidity than the base material 61. In this case, the protruding piece 70 is not easily deformed even if a restoring force (a restoring force that the folding target portion 64 tries to return to the shape before the folding) is applied to the base material 61. The shape is easily held stably, and as a result, the locked state can be kept good.

In the reference example , the protruding piece 70 is made of the same material as the base material 61 and is thicker than the base material 61. In this way, the protruding piece 70 having higher rigidity than the base material 61 can be formed of the same material as that of the base material 61, so that the number of types of materials can be more easily suppressed, which is advantageous in manufacturing.

[ First Embodiment]
Next, a first embodiment will be described. FIG. 7A is an enlarged view schematically showing a configuration before bending a part of the antenna according to the first embodiment, and FIG. 7B schematically shows a configuration after bending the portion. It is an enlarged view shown. The first embodiment is a point that a part of the protruding portion 270 be different from the protruding portion 70 of the reference example is different from the first embodiment, but is otherwise similar to the reference example. Therefore, in the following, portions different from the reference example will be described with emphasis, and portions similar to the reference example will be denoted by the same reference numerals as those of the reference example, and detailed description thereof will be omitted.

The antenna 260 according to the first embodiment is also in a bent state as shown in FIG. 7B by bending the part to be bent along the fold line L from the state before being bent as shown in FIG. In this state, the folding target portion 64 is locked by the protruding piece 270.

  Also in this antenna 260, as shown in FIG. 7B, the protruding portion 270 is provided in the linear portion 63 so as to protrude toward the bending side of the bending target portion 64 (lower side in the drawing in the example of FIG. 7). . The protruding piece 270 is also a highly rigid member having higher rigidity than the base material 61 (for example, a member made of the same material as the base material 61 and thicker than the base material 61, or an elastic modulus higher than that of the base material 61). Etc.), and is less likely to be elastically deformed than the base material 61.

The protrusion 270 is also formed in a plate shape and is fixed to one surface (one plate surface) of the linear portion 63 with an adhesive or the like. An extending portion 71 that extends to the bending side of the extending portion 71 and a bent portion 72 that bends in the lateral direction with respect to the extending direction of the extending portion 71 are provided. And the part of this extension part 71 and the bending part 72 is comprised by L shape, and functions as a latching | locking part similarly to the reference example .

  Further, as shown in FIGS. 7A and 7B, the protruding portion 270 used in the present embodiment is provided with a reinforcing portion 273 extending to the bent portion 66 side from the extending position of the extending portion 71. . The reinforcing portion 273 is configured integrally with the extending portion 71 and extends from the extending position of the extending portion 71 to the bending target portion 64 side along the linear portion 63, and its end portion 273a. Are arranged along a fold line L which is a fold position of the fold target portion 64.

The fold line L is inclined at an angle of, for example, about 45 ° with respect to the arrangement direction of the linear portion 63 (the extending direction of the linear portion 63), and the end portion 273a of the reinforcing portion 273 is also this fold line L. And is inclined at an angle of about 45 ° with respect to the arrangement direction of the linear portion 63 (the extending direction of the linear portion 63). The bending target portion 64 can be bent along such a folding line L. By bending the folding target portion 64 along the folding line L, the extension portion 71 extends as shown in FIG. It is designed to be folded back to the exit side. The locking structure after bending is the same as in the reference example, and the opposite surface 64b of the bending target portion 64 is the opposite surface of the bending portion 72 (the surface bonded to the linear portion 63, opposite to the one surface 70a). The folding target portion 64 is locked by being in contact with the side surface), whereby the bent shape is maintained. More specifically, the portion 64 to be bent is inserted into the back side (the side opposite to the one surface 70a) of the bent portion 72 of the protruding piece 270, and the state returns to the state shown in FIG. The part 64 to be bent is pressed and supported by the bent part 72.

  The protruding piece 270 is also provided with a second reinforcing portion 274 that extends to the opposite side of the reinforcing portion 273. The second reinforcing portion 274 is integrally connected to the extending portion 71, extends to the opposite side of the reinforcing portion 273 along the linear portion 63, and overlaps a part of the linear portion 63. Is arranged. In the present embodiment, the reinforcing portion 273 and the second reinforcing portion 274 are both arranged so as to overlap one plate surface of the linear portion 63, and function to suppress deformation of the linear portion 63. ing.

(Main effects of the first embodiment)
In the antenna 260 according to the first embodiment, a plate-like base material 61 is provided on the flexible substrate 60 a, the conductor 62 is held along the base material 61, and the protruding piece 270 is more rigid than the base material 61. It is comprised by the high highly rigid member. In this way, even if the restoring force of the base material 61 is applied, the protruding piece 70 is not easily deformed, and thus the shape of the protruding piece 70 is easily held stably, so that the locked state can be kept good. it can. Further, the base member 61 (highly rigid member) is provided with a reinforcing portion 273 that extends toward the bent portion 66 from the extended position of the extended portion 71. If it does in this way, it can reinforce by the reinforcement part 273 between the extension part 71 and a fold line, and keeps the shape between the extension part 71 and a fold line (the part which is not bent) stably. Can do.

In the first embodiment, the bending target portion 64 can be bent along the bending line L inclined with respect to the direction of arrangement of the linear portion 63, and the end portion 273 a of the reinforcing portion 273 is bent. Are arranged along. If it does in this way, it will become easy to keep the shape from the extension part 71 to the fold line L (part which is not bend | folded) to a more suitable shape, and also the bending object part 64 will be more accurately along the fold line L and It becomes possible to bend easily.

[ Second Embodiment]
Next, a second embodiment will be described. FIG. 8 is an enlarged view schematically showing the configuration near the bent portion of the antenna according to the second embodiment. The second embodiment includes all the features of the reference example , and further differs from the reference example in that a protrusion 380 is provided. Thus the portion other than the protruding portion 380, and is similar to the reference example, and a detailed description is given the same reference numerals as reference example will be omitted.

In the antenna 360 according to the second embodiment, a protruding portion 380 that protrudes in the thickness direction of the bending target portion 64 is formed in the bending target portion 64. The protrusion 380 is configured in a plate shape having a predetermined thickness, for example, and is fixed to the opposite surface 64b of the bending target portion 64 with an adhesive or the like. In this configuration, as in the reference example , the predetermined contact surface (the surface opposite to the one surface 70a) of the protruding piece 70 is configured to contact the opposite surface 64b of the bending target portion 64. The protrusion 380 can support a surface (specifically, the outer surface of the side portion 72b of the bent portion 72) different from the contact surface (the surface opposite to the one surface 70a) of the protruding piece 70. Yes. More specifically, when the portion to be bent 64 tries to return slightly to the shape before bending, the side portion 380a of the protrusion 380 comes into contact with the side portion 72b of the bent portion 72 so that it is also locked at this position. It has become.

(Main effects of the second embodiment)
In the antenna 360 according to the second embodiment, a protrusion 380 that protrudes in the thickness direction of the bending target portion 64 is formed in the bending target portion 64. And the predetermined contact surface (surface on the opposite side to the one surface 70a) of the protruding piece 70 is configured to contact the bending target portion 64, and the protrusion 380 is the contact surface of the protruding piece 70. Different surfaces (outer surfaces of the side portions 72b) can be supported. In this way, the portion 64 to be bent comes into contact with the predetermined contact surface of the protruding piece 70, and in addition to the lock, the protrusion 380 supports the portion other than the predetermined contact surface. The Rukoto. That is, since the protrusions 380 are locked at a plurality of different positions, the locked state between the bending target portion 64 and the protruding piece 70 is more easily maintained.

[Other Embodiments]
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.

  In any of the above embodiments, the adhesive medium can be provided at the contact position of the protruding piece 70 with the bending target portion 64. The adhesive medium may be an adhesive substance, and may be a double-sided tape or the like. In this way, since the adhesive medium can be interposed between the folding target portion 64 and the projecting piece 70, these contact states can be maintained more stably, and the folding shape can be more easily maintained. Become.

  In the above embodiment, the end portion 72a of the bent portion 72 is protruded from the side portion of the bending target portion 64. However, the protruding end portion 72a side may be bent toward the bending target portion 64 side. In this way, the locking function can also be exhibited on the end 72a side of the bent portion 72.

As a modification of the second embodiment, a configuration as shown in FIG. 9 may be adopted. This modification includes all the features of the reference example , and further differs from the reference example in that a protrusion 480 is provided. Thus the portion other than the protruding portion 480, and is similar to the reference example, and a detailed description is given the same reference numerals as reference example will be omitted.
In the antenna 460 according to this modification, a protrusion 480 that protrudes in the plate surface direction of the bending target portion 64 is formed in the bending target portion 64. The projecting portion 480 is configured, for example, in a plate shape integrally with the folding target portion 64, and is in a direction substantially orthogonal to the direction of the folding target portion 64 (in the example of FIG. 9, the linear portion when the folding target portion 64 is folded). 63) and a part of the side portion 480 a of the projection 480 supports the one surface 70 a of the protruding piece 70. Even in this configuration, similarly to the reference example , the predetermined contact surface (the surface opposite to the one surface 70a) of the protruding piece 70 is configured to contact the opposite surface 64b of the bending target portion 64. The projecting portion 480 supports a surface (one surface 70a) different from the contact surface (the surface opposite to the one surface 70a) of the protruding piece 70. Therefore, the protruding piece 70 is sandwiched from both sides in the thickness direction by the bending target portion 64 and the protruding portion 480, and the locked state is further stabilized.

DESCRIPTION OF SYMBOLS 1 ... Non-contact communication terminal 60 ... Antenna 60a ... Flexible substrate 61 ... Base part 62 ... Conductor 63 ... Linear part (predetermined part)
64: Bending target part 66 ... Bending part 70 ... Projection piece 71 ... Extension part 72 ... Bending part 273 ... Reinforcing part 380, 480 ... Projection part Ca ... Card

Claims (7)

An antenna comprising a flexible substrate configured to be bendable and having a conductor disposed on at least a part of the flexible substrate,
At least a part of the flexible substrate is formed with a bent portion that bends the part to be bent following the predetermined part in a direction different from the direction of the predetermined part,
The predetermined portion is provided with a protruding piece protruding to the bending side of the bending target portion,
The protruding piece is
An extending portion extending from the predetermined portion to the bending side of the bending target portion;
A bent portion bent in a lateral direction with respect to the extending direction of the extending portion;
With
The bent portion that is bent with respect to the predetermined portion is configured to be locked by contacting at least the bent portion of the protruding piece ,
The flexible substrate includes a plate-like base material and the conductor is held along the base material,
The protruding piece is made of a highly rigid member having higher rigidity than the base material,
The antenna according to claim 1, wherein the high-rigidity member is provided with a reinforcing portion that extends toward the bent portion with respect to the extending position of the extending portion . An antenna comprising a flexible substrate configured to be bendable and having a conductor disposed on at least a part of the flexible substrate,
At least a part of the flexible substrate is formed with a bent portion that bends the part to be bent following the predetermined part in a direction different from the direction of the predetermined part,
The predetermined portion is provided with a protruding piece protruding to the bending side of the bending target portion,
Said predetermined portion the folded target portion folded against is locked Ru configuration by contact with the protruding piece,
In the bending target portion, a protrusion protruding in the thickness direction or the plate surface direction of the bending target portion is formed,
The predetermined contact surface of the protruding piece is configured to contact the bending target portion,
The antenna is characterized in that the protrusion can support a surface different from the contact surface of the protruding piece . The folding target portion can be folded along a folding line that is inclined with respect to the orientation of the predetermined portion.
The antenna according to claim 1 , wherein an end of the reinforcing portion is disposed along the fold line. The protruding piece is
An extending portion extending from the predetermined portion to the bending side of the bending target portion;
A bent portion bent in a lateral direction with respect to the extending direction of the extending portion;
With
The antenna according to claim 2 , wherein the bending target portion is locked by contacting at least the bent portion. The flexible substrate includes a plate-like base material and the conductor is held along the base material,
The antenna according to claim 2 or 4, wherein the protruding piece is made of a highly rigid member having higher rigidity than the base material. The antenna according to claim 1 , wherein the high-rigidity member is made of the same material as the base material and is thicker than the base material.   The antenna according to any one of claims 1 to 6, wherein the protruding piece is provided with an adhesive medium at a contact position with the bending target portion.

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