JP2015095820A - Antenna and electronic component - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize an antenna that can be easily manufactured and mounted on a substrate, and is small-sized, hardly deformed and prevented from transmitting externally given force to the substrate.SOLUTION: Lateral face parts 11B-1 and 11B-2 of an antenna 11, which can be applied to a communication device for a vehicle for example, are formed by bending waveform parts in the middle including one valley part of a member before processing in a direction vertical to a vibration direction, include the valley part and are vertical to a mounted face of a substrate. Upper face parts 11A-1 to 11A-3 compose the waveform parts with the lateral face parts 11B-1 and 11B-2, are parallel to the mounted face and vertical to the lateral face parts 11B-1 and 11B-2. Supporting parts 11C-1 and 11C-2 are bent downward from both left and right ends of the upper face part 11A-1 to 11A-3 to support the upper face part 11A-1 to 11A-3. Installing parts 11D-1 and 11D-2 are bent from lower ends of the supporting parts 11C-1 and 11C-2, parallel to the mounted face and soldered to the mounted face.

Description

  The present invention relates to an antenna and an electronic component, and more particularly to an antenna for mounting on a substrate and an electronic component including a substrate on which the antenna is mounted.

  Conventionally, an antenna that receives a signal from a portable device for a vehicle (for example, a key fob) is provided above the mounting surface of the board at a predetermined interval. Measures have been proposed to prevent misalignment and deformation due to the above.

  For example, it has been proposed to support an antenna with support members on a plurality of pillars provided on a substrate (see, for example, Patent Document 1).

  In addition, for example, it has been proposed to fix the antenna above the mounting surface of the substrate by providing a plurality of legs on the antenna and inserting it into the substrate (see, for example, Patent Document 2).

  Further, for example, it has been proposed to form a plurality of protrusions bent toward the substrate side in the middle of the antenna, and to support the protrusions by a plurality of support portions provided on the substrate (see, for example, Patent Document 3). ).

  However, since the antennas described in Patent Documents 1 to 3 cannot be soldered to the substrate by a reflow process like other electronic components, it is necessary to mount the antenna on the substrate in a separate process from the other electronic components.

  Therefore, conventionally, an antenna that can be soldered by the same reflow process as other electronic components has been proposed.

  For example, a chip-type antenna has been proposed in which an antenna wire is wired inside or on the surface of a resin and a terminal for soldering is provided (see, for example, Patent Documents 4 and 5).

  However, since the antennas described in Patent Documents 4 and 5 are made into chips, the manufacturing cost increases.

  Therefore, conventionally, for example, an antenna that is formed so as to be able to stand by bending a metal plate-like member, can be mounted on a substrate by a reflow process, and is combined with a pattern on the substrate has been proposed (for example, Patent Documents). 6 and 7).

  However, the antennas described in Patent Documents 6 and 7 may be deformed by a force applied when mounted on a substrate, for example. On the other hand, when a thick metal plate is used to prevent deformation, the strength of the antenna itself is increased, but the force applied to the antenna is directly transmitted to the substrate, which may adversely affect the substrate.

JP 2013-118594 JP 2010-161725 A JP 2011-146993 A JP 2003-229710 A Japanese Patent Laid-Open No. 2006-217050 JP 2011-77702 A JP 2011-160414 A

  The present invention makes it possible to realize an antenna that is easy to manufacture and mount on a substrate, has good sensitivity, is small in size and hardly deforms, and hardly transmits an external force to the substrate.

  The antenna of the present invention has a corrugated portion that is a corrugated portion including at least one valley portion in a part of a planar member in a state before the bending process, and is formed on a predetermined mounting surface of the substrate after the bending process. An antenna to be mounted, which is formed by bending a first bent portion that is perpendicular to the amplitude direction of the corrugated portion in the middle of the corrugated portion, includes a trough, and is a first surface that is perpendicular to the mounting surface. The corrugated portion together with the side surface portion and the first side surface portion are parallel to the mounting surface and are perpendicular to the first side surface portion, and the amplitude direction of the upper surface portion. A pair of support parts that are bent downward from both ends in the vertical direction and a pair of mounting parts that are bent from the lower ends of the pair of support parts and are parallel to the mounting surface and soldered to the mounting surface A part.

  In the antenna of the present invention, radio waves are received by at least one of the first side surface portion, the upper surface portion, and the support portion. Further, the antenna can stand upright by the support portion and the attachment portion, and the antenna is mounted on the substrate by soldering the attachment portion.

  Therefore, it is possible to realize an antenna that can be easily manufactured and mounted on a substrate, has good sensitivity, is small in size and hardly deforms, and hardly transmits an external force to the substrate.

  The corrugated portion may include one or more peak portions, and the upper surface portion may include the peak portions.

  As a result, the area of the upper surface can be increased, and mounting on the substrate by a picking device or the like is facilitated.

  The corrugated portion includes one or more peak portions, and is formed by bending the corrugated portion with a second bent portion perpendicular to the amplitude direction between the first bent portion and the peak portion. A second side surface portion that is a surface perpendicular to the surface can be further provided.

  Thereby, the sensitivity of the antenna can be further improved.

  The corrugated portion can be folded back at approximately 180 degrees at the trough.

  Thereby, the antenna can be further downsized.

  The pair of attachment portions can be bent in directions extending from the lower ends of the pair of support portions.

  This improves stability when the antenna is upright.

  The pair of attachment portions can be connected to a pattern antenna formed on the mounting surface.

  As a result, the antenna and the pattern antenna are connected, and it is possible to receive a radio wave having an antenna length combining the antenna and the pattern antenna.

  The electronic component of the present invention includes a substrate and a corrugated portion that is a corrugated portion including at least one valley portion in a part of a planar member in a state before the bending process, and after the bending process, The antenna is mounted on the mounting surface of the antenna, and is formed by bending at a bent portion perpendicular to the amplitude direction of the corrugated portion in the middle of the corrugated portion, including a trough, and a side surface that is a surface perpendicular to the mounting surface The upper surface portion that is a surface that is parallel to the mounting surface and is perpendicular to the side surface portion, and downward from both ends in the direction perpendicular to the amplitude direction of the upper surface portion An antenna including a pair of support portions that are bent to each other and a pair of attachment portions that are bent from the lower ends of the pair of support portions and that are parallel to the mounting surface and are soldered to the mounting surface. .

  In the electronic component of the present invention, radio waves are received by at least one of the first side surface portion, the upper surface portion, and the support portion. Further, the antenna can stand upright by the support portion and the attachment portion, and the antenna is mounted on the substrate by soldering the attachment portion.

  Accordingly, it is possible to realize an antenna that is small and hardly deformed and that is difficult to transmit a force applied from the outside to the substrate.

  Therefore, it is possible to realize an antenna that can be easily manufactured and mounted on a substrate, has good sensitivity, is small in size and hardly deforms, and hardly transmits an external force to the substrate.

  According to the present invention, it is possible to realize an antenna that can be easily manufactured and mounted on a substrate, has good sensitivity, is small, hardly deforms, and hardly transmits externally applied force to the substrate.

1 is a perspective view showing a first embodiment of an antenna to which the present invention is applied. It is the perspective view which looked at the antenna of 1st Embodiment from another direction. It is a trihedral view of the antenna of the first embodiment. It is a top view of the member of the state before the bending process of the antenna of 1st Embodiment. It is a perspective view which shows the state which mounted the antenna on the board | substrate. It is a side view which shows the state which mounted the antenna on the board | substrate. It is a figure for demonstrating the example of the mounting method to the board | substrate of an antenna. It is a figure for demonstrating the example of the mounting method to the board | substrate of an antenna. It is a figure which shows the mode of a deformation | transformation of the antenna at the time of mounting. It is a perspective view which shows 2nd Embodiment of the antenna to which this invention is applied. It is a top view of the member of the state before the bending process of the antenna of 2nd Embodiment. It is a perspective view which shows 3rd Embodiment of the antenna to which this invention is applied. It is a perspective view which shows 4th Embodiment of the antenna to which this invention is applied. It is a perspective view which shows 5th Embodiment of the antenna to which this invention is applied. It is a top view of the member of the state before the bending process of the antenna of 5th Embodiment.

Hereinafter, modes for carrying out the present invention (hereinafter referred to as embodiments) will be described. The description will be given in the following order.
1. 1. First embodiment (antenna having two side surface folding and one top surface folding) 2. Second embodiment (antenna having side surface folding number 1 and top surface folding number 0) 3. Third embodiment (antenna having side surface folding number 3 and top surface folding number 2) 4. Fourth embodiment (antenna having four side surface folds and three upper surface folds) Fifth embodiment (antenna with side part folded back and front)
6). Modified example

<1. First Embodiment>
{Configuration example of antenna 11}
1 to 3 show a configuration example of an antenna 11 which is a first embodiment of an antenna to which the present invention is applied. 1 and 2 are perspective views of the antenna 11 as seen from different directions, and FIG. 3 is a three-view diagram of the antenna 11.

  The antenna 11 is soldered to a mounting surface of a substrate (not shown) and mounted on the substrate, thereby constituting a part of a communication apparatus including the substrate. This communication device is used, for example, to communicate with a portable device for a vehicle (for example, a key fob) and realize functions such as keyless entry and passive entry.

  Here, the keyless entry is a function for performing a remote operation of locking or unlocking the door of the vehicle without operating a physical key, for example, by operating a portable device. The passive entry is based on the fact that the portable device communicates with the vehicle when the door handle of the vehicle or a button near the door is operated, or when the user approaches the vehicle and the authentication is successful. Function to lock or unlock the door. When the door is locked or unlocked, keyless entry requires operation of the portable device, but passive entry does not require operation of the portable device.

  The antenna 11 includes an upper surface portion including upper surface portions 11A-1 to 11A-3, a side surface portion including side surface portions 11B-1 and 11B-2, a pair of support portions 11C-1 and a support portion 11C-2, And it is comprised by a pair of attaching part 11D-1 and attaching part 11D-2.

  Hereinafter, in FIG. 1, the side on which the side surface portion is provided is the front side of the antenna 11, and the opposite side is the rear side of the antenna 11. The side on which the support portion 11C-1 is provided is the left side of the antenna 11, and the side on which the support portion 11C-2 is provided is the right side of the antenna 11.

  The upper surface portion 11A-1 to the upper surface portion 11A-3 are surfaces parallel to the mounting surface of the substrate, and are arranged in the left-right direction at intervals. Further, the upper surface portion of the antenna 11 is folded back in the direction of about 180 degrees at the rear end of the upper surface portion 11A-2. Therefore, the number of folded portions of the upper surface portion of the antenna 11 (hereinafter referred to as the number of folded portions) is 1.

  The side surface portion 11B-1 and the side surface portion 11B-2 are surfaces that are bent vertically downward from the front ends of the upper surface portion 11A-1 to the upper surface portion 11A-3 and are perpendicular to the mounting surface of the substrate. The side surface portion 11B-1 and the side surface portion 11B-2 each have a U-shape that is folded back at approximately 180 degrees at the lower end. Accordingly, the number of turns of the side surface portion of the antenna 11 is two. Note that the side surface portion 11B-1 and the side surface portion 11B-2 can be formed in a shape that is folded back at approximately 180 degrees other than the U shape (for example, a V shape).

  The upper end of the side surface portion 11B-1 is connected to the front end portion of the upper surface portion 11A-1 and the front end portion on the left side of the upper surface portion 11A-2. The upper end of the side surface portion 11B-2 is connected to the right front end portion of the upper surface portion 11A-2 and the front end portion of the upper surface portion 11A-3. Moreover, the lower end of side part 11B-1 and side part 11B-2 exists in a position higher than the lower end of attachment part 11D-1 and attachment part 11D-2. Therefore, when the antenna 11 is mounted on the substrate, a gap is formed between the lower ends of the side surface portion 11B-1 and the side surface portion 11B-2 and the mounting surface of the substrate.

  The support portion 11C-1 is a surface that is bent vertically downward from the left end of the upper surface portion 11A-1 and is perpendicular to the mounting surface of the substrate. The support portion 11C-2 is a surface that is bent vertically downward from the right end of the upper surface portion 11A-3 and is perpendicular to the mounting surface of the substrate. Accordingly, the support portion 11C-1 and the support portion 11C-2 face each other in the left-right direction. The support portion 11C-1 and the support portion 11C-2 support the left and right ends of the upper surface portion of the antenna 11 including the upper surface portion 11A-1 to the upper surface portion 11A-3.

  The attachment portion 11D-1 is a surface that is bent perpendicularly to the left from the lower end of the support portion 11C-1 and is parallel to the mounting surface of the substrate. The attachment portion 11D-2 is a surface that is bent perpendicularly to the right from the lower end of the support portion 11C-2 and is parallel to the mounting surface of the substrate. Accordingly, the attachment portion 11D-1 and the attachment portion 11D-2 are bent in directions extending from the lower ends of the support portion 11C-1 and the support portion 11C-2. The attachment portion 11D-1 and the attachment portion 11D-2 make the antenna 11 self-supporting and are soldered and fixed to the mounting surface of the substrate.

  Thus, the antenna 11 has many folded portions and bent portions, and the size of the antenna 11 can be reduced while maintaining the antenna length from the attachment portion 11D-1 to the attachment portion 11D-2 to a necessary length.

  The antenna 11 includes an upper surface portion (upper surface portion 11A-1 to upper surface portion 11A-3), a side surface portion (side surface portion 11B-1 and side surface portion 11B-2), and a support portion (support portion 11C-1 and support portion). The part 11C-2) is provided with surfaces that are perpendicular to each other and face in three different directions and have a certain width. Therefore, radio waves from each direction can be received well regardless of the traveling direction. That is, the sensitivity of the antenna can be improved.

  Specifically, radio waves flying from the front of the antenna 11 (radio waves traveling in the X-axis direction in FIG. 1) and radio waves flying from behind (radio waves traveling in the direction opposite to the X-axis direction in FIG. 1) Good reception is possible by the side portions (side portion 11B-1 and side portion 11B-2). Further, radio waves flying from the right direction of the antenna 11 (radio waves traveling in the Y-axis direction in FIG. 1) can be satisfactorily received by the support portion 11C-2. Furthermore, radio waves flying from the left direction of the antenna 11 (radio waves traveling in the direction opposite to the Y-axis direction in FIG. 1) can be satisfactorily received by the support portion 11C-1. Further, radio waves flying from above the antenna 11 (radio waves traveling in the Z-axis direction in FIG. 1) can be satisfactorily received by the upper surface portions (upper surface portions 11A-1 to 11A-3).

{Example of manufacturing method of antenna 11}
FIG. 4 shows an example of the member 31 in a state before the antenna 11 is bent. The member 31 has a thickness that allows at least the antenna 11 to stand on its own and does not deform when mounted on a substrate. For example, the member 31 is formed by punching a single metal plate against a die.

  The member 31 includes a corrugated portion W1 that is a corrugated portion including two trough portions (valley portion H1 and trough portion H2) and one crest portion (peak portion C1). The corrugated part W1 is bent in a direction of about 180 degrees in each of the valley part H1, the peak part C1, and the valley part H2, and has a shape close to a square wave whose amplitude direction is substantially vertical. The corrugated portion W1 includes upper surface portions 11A-1 to 11A-3, a side surface portion 11B-1, and a side surface portion 11B-2.

  The antenna 11 is formed by bending the member 31 at the bent portions FP1 to FP3-2.

  Specifically, the bent portion FP1 is in the middle of the corrugated portion W1, and is provided in a direction perpendicular to the amplitude direction of the corrugated portion W1 (vertical direction in FIG. 4). And the side part 11B-1 and the side part 11B-2 are formed by bend | folding the member 31 in the perpendicular downward direction by the bending part FP1, the trough part H1 becomes a lower end of the side part 11B-1, and trough part H2 is formed. It becomes the lower end of the side part 11B-2. Further, the peak portion C1 is the rear end of the upper surface portion 11A-2.

  The bent portion FP2-1 and the bent portion FP2-2 are located near both ends in a direction perpendicular to the amplitude direction of the waveform portion W1, and are provided in a direction parallel to the amplitude direction of the waveform portion W1. Further, the bent portion FP3-1 and the bent portion FP3-2 are located near both ends of the member 31, and are provided in a direction parallel to the amplitude direction of the corrugated portion W1. Then, the member 31 is bent vertically downward with respect to the upper surface portion by the bent portions FP2-1 and FP2-2, and perpendicular to the upper surface portion by the bent portions FP3-1 and FP3-2. The support part 11C-1 and the support part 11C-2, as well as the attachment part 11D-1 and the attachment part 11D-2 are formed.

  Thus, the antenna 11 can be easily manufactured by punching and bending a metal plate, and the manufacturing cost can be reduced.

{Example of mounting method of antenna 11}
5 and 6 show a state where the antenna 11 is mounted on the mounting surface 51A of the substrate 51. FIG. FIG. 5 is a perspective view of the vicinity of the antenna 51 mounted on the substrate 51, and FIG. 6 is a side view of the antenna 11 mounted on the substrate 51.

  With the antenna 11 mounted on the mounting surface 51A, the mounting portion 11D-1 and the mounting portion 11D-2 are connected to the pattern antenna 52 formed on the mounting surface 51A. The antenna 11 and the pattern antenna 52 constitute one antenna, and a radio wave corresponding to the antenna length of the antenna 11 and the pattern antenna 52 can be received.

  A dotted line 61 in FIG. 6 indicates the position of the solder when the antenna 11 is mounted on the substrate 51. As shown in this figure, since the center of gravity of the antenna 11 passes through the approximate center of the soldered portion, the antenna 11 can stand in a well-balanced manner, for example, when performing soldering, etc. Falling can be prevented.

  Next, an example of a method of mounting the antenna 11 on the substrate 51 will be described with reference to FIGS.

  As shown in FIG. 7, when the antenna 11 is mounted on the substrate 51, for example, the antenna 11 is sucked by the air of the picking device 71 and is carried onto the substrate 51. At this time, since the area of the upper surface portion 11A-2 of the antenna 11 is large, the antenna 11 can be easily sucked by the picking device 71.

  As shown in FIG. 8, the antenna 11 includes an attachment portion 11 </ b> D- 1 and an attachment portion 11 </ b> D- 2 of the paste solder 81-1 and the paste solder 81-2 applied on the mounting surface 51 </ b> A of the substrate 51. It is positioned so as to be placed on and placed on the substrate 51. And it mounts on the board | substrate 51 with a reflow process with another electronic component. That is, the paste solder 81-1 and the paste solder 81-2 are melted by the reflow process, and the antenna 11 is fixed on the mounting surface 51A of the substrate 51.

  Here, when the antenna 11 is mounted on the substrate 51, for example, as indicated by a thick arrow in FIG. 9A, a force is applied vertically downward to the upper surface portion 11A-2. As a result, as indicated by a dotted arrow in FIG. 9A, the antenna 11 is deformed in the direction toward the center in the left-right direction. However, the side surface portion 11B-1, the side surface portion 11B-2, the support portion 11C-1 and the slit SL1 to the slit SL5 formed by the support portion 11C-2, between the support portion 11C-1 and the mounting portion 11D-1, In addition, the rear portion is hardly deformed except that the space between the support portion 11C-2 and the attachment portion 11D-2 is deformed.

  In addition, the antenna 11 has a large area of the folded portion at the lower end of the side surface portion 11B-1 and the side surface portion 11B-2 surrounded by the dotted circle in FIG. 9B, other folded portions and the folded portion, and has a repulsive force against deformation. Because it is strong, it will immediately return to its original shape even when deformed. Therefore, the force applied to the antenna 11 from the outside is hardly transmitted to the substrate 51, and the force applied to the antenna 11 can be prevented from adversely affecting the substrate 51.

  Note that the number of folding of the side surface portion and the top surface portion of the antenna is not limited to the example of the antenna 11, and is set to an arbitrary number in consideration of the antenna length necessary for reception within a range where the antenna can stand on its own. be able to. Here, with reference to FIGS. 10 to 13, an example of an antenna in which the number of turns of the side surface portion and the upper surface portion is changed will be described.

<2. Second Embodiment>
{Configuration example of antenna 101}
FIG. 10 is a perspective view of an antenna 101 which is a second embodiment of the antenna to which the present invention is applied. In the antenna 101, the number of folding of the side surface portion is set to 1, and the number of folding of the upper surface portion is set to 0.

  The antenna 101 has a shape in which the upper end portion on the right side of the side surface portion 11B-1 and the front end portion of the upper surface portion 11A-3 are connected to the antenna 11 of FIG. 1 except for the upper surface portion 11A-2 and the side surface portion 11B-2. I am doing. The shapes of the upper surface portion 101A-1, the upper surface portion 101A-2, the support portion 101C-1, the support portion 101C-2, the attachment portion 101D-1, and the attachment portion 101D-2 are substantially the same as those of the antenna 11. However, the bent portions of the upper surface portion 101A-1 and the upper surface portion 101A-2 have a slightly angular shape as compared with the upper surface portion 11A-1 and the upper surface portion 11A-3 of the antenna 11. Note that the bent portion does not necessarily have to be square, and for example, the bent portion can have the same shape as the antenna 11.

{Example of manufacturing method of antenna 101}
FIG. 11 shows an example of the member 102 in a state before the antenna 101 is bent. The member 102 has substantially the same thickness as the member 31 shown in FIG. 4, and is formed, for example, by punching a single metal plate against a die.

  The member 102 includes one trough portion H11 and includes a corrugated portion W11 that does not include a peak portion. The waveform portion W11 is bent in the direction of about 180 degrees at the valley portion H11, and has a shape close to a square wave whose amplitude direction is substantially vertical. The waveform portion W11 includes an upper surface portion 101A-1, an upper surface portion 101A-2, and a side surface portion 101B.

  The antenna 11 is formed by bending the member 102 at the bent portions FP11 to FP13-2.

  Specifically, the bent portion FP11 is in the middle of the corrugated portion W11 and is provided in a direction perpendicular to the amplitude direction of the corrugated portion W11. And the side part 101B is formed by bend | folding the member 102 at the perpendicular | vertical downward direction by the bending part FP11, and the trough part H11 becomes a lower end of the side part 101B.

  The bent portion FP12-1 and the bent portion FP12-2 are located near both ends in a direction perpendicular to the amplitude direction of the waveform portion W11, and are provided in a direction parallel to the amplitude direction of the waveform portion W11. Further, the bent portion FP13-1 and the bent portion FP13-2 are located near both ends of the member 102 and are provided in a direction parallel to the amplitude direction of the corrugated portion W11. Then, the member 102 is bent vertically downward with respect to the upper surface portions (the upper surfaces 101A-1 and 101A-2) at the bent portions FP12-1 and FP12-2, and at the bent portions FP13-1 and FP13-2. The support portion 101C-1 and the support portion 101C-2, and the attachment portion 101D-1 and the attachment portion 101D-2 are formed by bending vertically in the horizontal direction with respect to the upper surface portion.

  As described above, the antenna 101 can be easily manufactured by punching and bending a metal plate in the same manner as the antenna 11, and the manufacturing cost can be reduced.

  Further, the antenna 101 can be easily mounted on the substrate for the same reason as the antenna 11, has good sensitivity, is small and hardly deformed, and can hardly transmit the force applied from the outside to the substrate.

<3. Third Embodiment>
FIG. 12 is a perspective view of an antenna 111 which is a third embodiment of the antenna to which the present invention is applied. In the antenna 111, the number of folding of the side surface portion is set to 3, and the number of folding of the upper surface portion is set to 2.

  Compared with the antenna 11 of FIG. 1, the antenna 111 has the number of upper surface portions (the upper surface portion 111A-2 and the upper surface portion 111A-3) having the same shape as the upper surface portion 11A-2 of the antenna 11 increased from 1 to 2. The number of side portions (side portions 111B-1 to 111B-3) having the same shape as the side portion 11B-1 of the antenna 11 is increased from two to three. The shapes of the upper surface portion 111A-1, the upper surface portion 111A-4, the support portion 111C-1, the support portion 111C-2, the attachment portion 111D-1, and the attachment portion 111D-2 are the same as those of the antenna 11.

<4. Fourth Embodiment>
FIG. 13 is a perspective view of an antenna 121 which is a fourth embodiment of an antenna to which the present invention is applied. In the antenna 121, the number of folding of the side surface portion is set to 4, and the number of folding of the upper surface portion is set to 3.

  As compared with the antenna 11 of FIG. 1, the antenna 121 has the number of upper surface portions (upper surface portions 121A-2 to 121A-3) having the same shape as the upper surface portion 11A-2 of the antenna 11 increased from 1 to 3. The number of side surfaces (side surfaces 121B-1 to 121B-4) having the same shape as the side surface 11B-1 of the antenna 11 is increased from 2 to 4. The shapes of the upper surface portion 121A-1, the upper surface portion 121A-5, the support portion 121C-1, the support portion 121C-2, the attachment portion 121D-1, and the attachment portion 121D-2 are the same as those of the antenna 11.

  Although detailed description is omitted, the antenna 111 and the antenna 121 can also be easily manufactured by punching and bending a metal plate, similarly to the antenna 11 and the antenna 101, and the manufacturing cost can be reduced. it can.

  In addition, the antenna 111 and the antenna 121 can be easily mounted on the substrate for the same reason as the antenna 11, have good sensitivity, are small and difficult to deform, and make it difficult to transmit the force applied from the outside to the substrate. it can.

<5. Fifth embodiment>
{Configuration example of antenna 131}
FIG. 14 is a perspective view of an antenna 131 which is a fifth embodiment of the antenna to which the present invention is applied. Unlike the antenna described above, the antenna 131 is provided with a side surface not only at the front but also at the rear.

  The antenna 131 includes an upper surface portion including upper surface portions 131A-1 to 131A-4, a front side surface portion including side surface portions 131B-1 and 131B-2, a rear side surface portion including side surface portions 131F, and a pair. The support portion 131C-1 and the support portion 131C-2, and a pair of the attachment portion 131D-1 and the attachment portion 131D-2. In addition, upper surface part 131A-1, upper surface part 131A-4, side surface part 131B-1, side surface part 131B-2, support part 131C-1, support part 131C-2, attachment part 131D-1, and attachment part 131D-2 The shape is the same as that of the antenna 11.

  The upper surface portion 131A-1 to the upper surface portion 131A-4 are surfaces parallel to the mounting surface of the substrate, and are arranged at intervals in the left-right direction. Further, the upper surface portion 131A-2 and the upper surface portion 131A-3 have a linear shape extending in the front-rear direction of the antenna 131.

  The side surface portion 131F is a surface that is bent vertically downward from the rear ends of the upper surface portion 131A-2 and the upper surface portion 131A-3 and is perpendicular to the mounting surface of the substrate. The side surface portion 131F has a U-shape similar to the side surface portion 131B-1 and the side surface portion 131B-2. Note that the side surface portion 131B-1, the side surface portion 131B-2, and the side surface portion 131F can be formed in a shape that is folded back at approximately 180 degrees other than the U shape (for example, a V shape). The upper end of the side surface portion 131F is connected to the rear ends of the upper surface portion 131A-2 and the upper surface portion 131A-3. Further, the lower end of the side surface portion 131F is at a position higher than the lower ends of the attachment portion 131D-1 and the attachment portion 131D-2. Therefore, when the antenna 131 is mounted on the substrate, a gap is formed between the lower end of the side surface portion 131F and the mounting surface of the substrate.

  The upper end of the side surface portion 131B-1 is connected to the front end portion of the upper surface portion 131A-1 and the front end portion of the upper surface portion 131A-2. The upper end of the side surface portion 131B-2 is connected to the front end portion of the upper surface portion 131A-3 and the front end portion of the upper surface portion 131A-4.

{Example of manufacturing method of antenna 131}
FIG. 15 shows an example of the member 132 in a state before the antenna 131 is bent. This member 132 has substantially the same thickness as the member 31 of FIG. 4, and is formed, for example, by punching a single metal plate against a die.

  The member 132 includes a corrugated portion W21 that is a corrugated portion including two trough portions (the trough portion H21 and the trough portion H22) and one peak portion (the peak portion C21). The corrugated part W21 is bent in a direction of about 180 degrees in each of the valley part H21, the peak part C21, and the valley part H22, and has a shape close to a square wave whose amplitude direction is substantially vertical. The corrugated portion W21 includes upper surface portions 131A-1 to 131A-4, a side surface portion 131B-1, a side surface portion 131B-2, and a side surface portion 131F.

  The antenna 131 is formed by bending the member 132 at the bent portions FP21 to FP24.

  Specifically, the bent portion FP21 is in the middle of the corrugated portion W21 and is provided in a direction perpendicular to the amplitude direction of the corrugated portion W21. Then, the side part 131B-1 and the side part 131B-2 are formed by bending the member 132 vertically downward at the bent part FP21, the valley part H21 becomes the lower end of the side part 131B-1, and the valley part H22 is formed. It becomes the lower end of the side part 131B-2.

  The bent part FP24 is in the middle of the corrugated part W21, between the bent part FP21 and the peak part C21, and is provided in a direction perpendicular to the amplitude direction of the corrugated part W21. And the side part 131F is formed by bend | folding the member 132 to the perpendicular downward direction by the bending part FP24, and the peak part C21 becomes a lower end of the side part 131F.

  The bent portion FP22-1 and the bent portion FP22-2 are located near both ends in a direction perpendicular to the amplitude direction of the waveform portion W21, and are provided in a direction parallel to the amplitude direction of the waveform portion W21. Further, the bent portion FP23-1 and the bent portion FP23-2 are provided near both ends of the member 132, and are provided in a direction parallel to the amplitude direction of the corrugated portion W21. Then, the member 132 is bent vertically downward with respect to the upper surface portion (upper surfaces 131A-1 to 131A-4) at the bent portions FP22-1 and FP22-2, and at the bent portions FP23-1 and FP23-2. The support part 131C-1 and the support part 131C-2, and the attachment part 131D-1 and the attachment part 131D-2 are formed by bending vertically in a horizontal direction with respect to the upper surface part.

  As described above, the antenna 131 can be easily manufactured by punching and bending a metal plate as in the case of the other antennas described above, and the manufacturing cost can be reduced.

  In addition, the antenna 131 can be easily mounted on the substrate for the same reason as the other antennas, is small and hardly deformed, and can hardly transmit the force applied from the outside to the substrate.

  Furthermore, reception sensitivity of radio waves from the rear of the antenna 131 can be improved by the side surface portion 131F.

<6. Modification>
In the above, an example in which the support portions of each antenna (for example, the support portion 11C-1 and the support portion 11C-2 of the antenna 11 in FIG. 1) are perpendicular to the mounting surface of the substrate is shown. May be tilted. For example, the support portion 11C-1 and the support portion 11C-2 of the antenna 11 may be inclined with respect to each other so that the upper end is closer than the lower end.

  Note that the antenna can be further downsized if the support portion of the antenna is perpendicular to the mounting surface of the substrate.

  Further, in the above, an example in which the mounting portions of each antenna (for example, the mounting portion 11D-1 and the mounting portion 11D-2 of the antenna 11 in FIG. 1) are formed so as to spread left and right has been described. It is not limited to. For example, the attachment portion 11D-1 and the attachment portion 11D-2 of the antenna 11 may be formed so as to be close to each other by bending in a direction opposite to that in FIG.

  It should be noted that the stability when the antennas are erected is improved by forming the mounting portions of the respective antennas so as to spread left and right.

  Furthermore, you may make it make the angle of the folding | returning part of the lower end of the side part (For example, side part 11B-1 and side part 11B-2 of the antenna 11 of FIG. 1) smaller than 180 degree | times of each antenna. For example, the angle of the folded portion at the lower end of the side surface portion 11B-1 and the side surface portion 11B-2 of the antenna 11 may be made smaller than 180 degrees so as to increase toward the top.

  In addition, the antenna can be further downsized by making the angle of the folded portion at the lower end of the side surface portion of each antenna close to 180 degrees.

  The present invention is not limited to a specific application as long as it is an electronic component such as an antenna mounted on a substrate or a communication device including a substrate mounted with an antenna. For example, the present invention can be applied to antennas and electronic components used for various communication devices, electric devices, and the like in addition to the above-described vehicle-mounted devices.

  Furthermore, the embodiments of the present invention are not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 11 Antenna 11A-1 thru | or 11A-3 Upper surface part 11B-1, 11B-2 Side surface part 11C-1, 11C-2 Support part 11D-1, 11D-2 Mounting part 31 Member 51 Board | substrate 51A Mounting surface 52 Pattern antenna 101 Antenna 101A-1, 101A-2 Upper surface portion 101B Side surface portion 101C-1, 101C-2 Support portion 101D-1, 101D-2 Mounting portion 111 Antenna 111A-1 to 111A-4 Upper surface portion 111B-1 to 111B-3 Side surface portion 111C-1, 111C-2 support part 111D-1, 111D-2 mounting part 121 antenna 121A-1 thru | or 121A-5 upper surface part 121B-1 thru | or 121B-4 side surface part 121C-1, 121C-2 support part 121D-1 121D-2 Mounting part 131 Antenna 131A-1 to 131A-4 Surface part 131B-1, 131B-2 Side part 131C-1, 131C-2 Support part 131D-1, 131D-2 Mounting part 131F Side part W1 to W21 Corrugated part H1 to H22 Valley part C1 to C21 Mountain part FP1 to FP23- 2 Folding part

Claims (8)

An antenna that has a corrugated portion that is a corrugated portion including at least one valley portion in a part of a planar member in a state before bending, and is mounted on a predetermined mounting surface of a substrate after bending. And
A first side surface portion that is formed by being bent at a first bent portion that is perpendicular to the amplitude direction of the corrugated portion in the middle of the corrugated portion, includes the valley portion, and is a surface perpendicular to the mounting surface; ,
The corrugated portion together with the first side surface portion, and an upper surface portion that is a surface parallel to the mounting surface and perpendicular to the first side surface portion;
A pair of support portions bent downward from both ends of the upper surface portion in a direction perpendicular to the amplitude direction;
An antenna comprising: a pair of attachment portions that are bent from lower ends of the pair of support portions and are parallel to the mounting surface and are soldered to the mounting surface. The corrugated portion includes one or more peaks.
The antenna according to claim 1, wherein the upper surface portion includes the peak portion. The corrugated portion includes one or more peaks.
A surface that is formed by bending the corrugated portion with a second bent portion that is perpendicular to the amplitude direction between the first bent portion and the peak portion, and includes the peak portion and is a surface that is perpendicular to the mounting surface. The antenna according to claim 1, further comprising: a second side surface portion. The antenna according to any one of claims 1 to 3, wherein the corrugated portion is folded back at approximately 180 degrees at the trough. The antenna according to claim 1, wherein the pair of support portions are perpendicular to the mounting surface. The antenna according to any one of claims 1 to 5, wherein the pair of attachment portions are bent in directions extending from the lower ends of the pair of support portions. The antenna according to any one of claims 1 to 6, wherein the pair of attachment portions are connected to a pattern antenna formed on the mounting surface. A substrate,
An antenna mounted on a predetermined mounting surface of the substrate after bending, having a corrugated portion which is a corrugated portion including at least one valley portion in a part of a planar member in a state before the bending processing There,
A side part that is formed by bending at a bent part perpendicular to the amplitude direction of the corrugated part in the middle of the corrugated part, includes the valley part, and is a surface perpendicular to the mounting surface;
The corrugated portion together with the side surface portion, an upper surface portion parallel to the mounting surface and perpendicular to the side surface portion;
A pair of support portions bent downward from both ends of the upper surface portion in a direction perpendicular to the amplitude direction;
An electronic component comprising: an antenna comprising: a pair of attachment portions that are bent from the lower ends of the pair of support portions and are parallel to the mounting surface and soldered to the mounting surface.

Images