JPH07106826A - Antenna structure for portable electronic devices - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide an antenna structure that is easy to manufacture and that can improve the workability of manufacturing a portable electronic device. [Configuration] Loop antenna 13 and antenna holder 12
Are assembled into one antenna assembly component, conductive members 50 and 52 with which the antenna contacts are provided on the printed circuit board 11, and the antenna holder and the printed circuit board are engaged with the guide members 39 and 40 and the guide grooves 42 and 43. Depending on the situation, the antenna assembly parts can be assembled simply by sliding them. As a result, the workability in assembling the antenna structure can be improved, the efficiency of component management can be improved by assembling the components, and the variation in size and shape after fabrication can be suppressed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antenna structure for a portable electronic device, and more particularly to an antenna structure for a portable electronic device with improved workability in mounting the electronic device during manufacturing of the portable electronic device.

[0002]

2. Description of the Related Art In recent years, there has been a remarkable spread and development of mobile electronic devices such as mobile phones utilizing a wireless system, and while miniaturization of each model has been achieved,
The manufacturing process is also being reviewed so that it can be mass-produced more easily. Taking a mobile phone as an example of such a portable electronic device, a conventional example of the antenna structure thereof is shown in FIG. In this figure, reference numeral 1 is an antenna for transmitting and receiving radio waves, 2 is an antenna holder for supporting the antenna 1, 3 is a tape for fixing the antenna 1 to the antenna holder 2, 4 is a printed circuit board to which the antenna holder is attached, and 5 is Printed circuit board 4
It is a through hole formed in the printed circuit board 4 for attaching and connecting the antenna 1 to.

In manufacturing such an antenna structure for a mobile phone, the antenna holder 2 is attached to the printed circuit board 4 and then both ends of the antenna 1 are transformed into the through holes 5 while the antenna 1 is deformed. Is penetrated from the upper side of the printed circuit board 4, and the other end is penetrated from the lower side of the printed circuit board. Next, the antenna 1 and the antenna holder 2 are attached to each other with the tape 3 and the antenna 1 is attached.
The backlash between the antenna holder 2 and the antenna holder 2 is suppressed. Finally, the both ends of the antenna holder, which penetrates through the through hole 5, are soldered to the printed circuit board 4 so that the antenna 1 and the printed circuit board 4 are electrically connected.

[0004]

However, in the above-mentioned conventional antenna structure for a portable electronic device, when the antenna 1 is incorporated in a mobile phone, the work of penetrating both ends into the through hole 5 while deforming the antenna is performed. Therefore, a certain skill or skill is required for this work. Further, there is also a problem that the workability is poor in the production work of the mobile phone because the work of attaching the tape 3 is required.

The present invention has been made in view of the above problems, and an object thereof is to provide an antenna structure which is easy to manufacture and which can improve the workability of manufacturing a portable electronic device.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a loop antenna fixed to an antenna holder so as to be integrated into one part as an antenna assembly part, and the antenna is mounted on a printed circuit board. Is provided with a land on which the side surface of the antenna contacts, and an open through hole with which the outer peripheral surface of the antenna contacts, and further, a guide groove through which the guide shaft of the antenna holder is guided is provided on the printed circuit board, and the antenna assembly component is simply slid. The antenna assembly parts can be built into the printed circuit board, and soldering can be completed on only one side.
In addition, a thin beam that can be deformed was provided on the printed circuit boards with slightly different thicknesses in order to adjust the load during assembly and to prevent backlash when clearance occurs.

[0007]

According to the present invention, since the antenna assembly components are integrated into one component with the above-mentioned configuration, the workability can be improved without requiring a special trick for the assembling work. Further, the land and the open through hole are provided on the printed circuit board, and the guide groove through which the guide shaft of the antenna holder is guided is provided, so that the antenna assembly component can be assembled only by sliding. Further, the soldering of the printed circuit board and the end portion of the antenna can be completed with only one surface of the printed circuit board. Further, by providing the deformable thin beam, the load at the time of assembling is adjusted to be constant with respect to the printed circuit boards whose thicknesses are slightly different, and the backlash when the clearance occurs can be suppressed.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 is a perspective view showing the configuration of an antenna structure of a portable electronic device according to an embodiment of the present invention, FIG.
Is a perspective view showing the antenna assembly part in a partially disassembled state,
FIG. 3 is a perspective view showing the structure inside the slit of the antenna holder. In this embodiment, reference numeral 11 is a printed circuit board on which various wirings for operating and controlling the portable electronic device are provided, 12 is an antenna holder for holding an antenna,
Reference numeral 3 is an antenna for transmitting and receiving radio waves, 14 is a soldering point for connecting and conducting the end portion of the antenna 13 and the printed circuit board 11, and 15 is a sure connection between the printed circuit board 11 and the antenna holder 12. A slide stopper 16 is formed on a part of the antenna holder 12 and is a thin beam as a substrate pressing member for holding the printed circuit board 11 by elastic deformation. 17 is a contact protrusion formed on the thin beam 16 and abutting the surface of the printed circuit board 11. Is.

In this embodiment, the antenna 13 is formed by bending a rod-shaped metal material into a substantially rectangular loop shape.
The side contact portion 18 is cut (that is, cut off) so that both ends meet at one corner, and one end is formed in a step shape and extends in the horizontal direction.
And the other end portion forms an outer peripheral surface contact portion 19 forming a part of a rectangular shape and extending in the vertical direction. Both the side surface contact portion 18 and the outer peripheral surface contact portion 19 are positioned at the soldering point 14 of the antenna structure when attached to the antenna holder 12. Note that the loop shape of the antenna 13 may be, for example, an elliptical shape or another shape other than the rectangular shape.

The antenna holder 12 is formed by integrally molding a plastic or other resin material by a method such as molding.
A center rib 20 extending in the longitudinal direction is provided upright from the upper surface at a substantially central portion of the upper surface of the antenna holder 12, and the center rib 2 is provided on the upper surface of the center rib 20.
First stoppers 21 are provided on both sides of 0 in the width direction. In addition, the back end of the center rib 20 (see FIG.
The middle, diagonally upper right side end) extends further than the side end of the antenna holder 12 in the same direction, and extends slightly around the back end of the antenna holder 12 to the lower side. A second stopper 22 is provided at the back end so as to project to both sides in the width direction thereof and to form a gap between the back end and the surface of the back end of the antenna holder 12. Further, also on the lower surface of the antenna holder 12, a center rib 23 similar to that on the upper surface is provided, and a third stopper 24 and a fourth stopper (which are hidden in the drawing) are provided. In FIG. 2, the center rib 2 is provided at the front end of the antenna holder 12, that is, the front end in FIG.
5 and sandwiching ribs 26, 27 arranged at predetermined intervals on both sides of the center rib 25.

Next, the front side of the antenna holder 12 (see FIG.
Looking at the lower right side in the perspective view of FIG. 2) and the rear side (pointing the upper left side of the same), the front side of the upper surface of the antenna holder 12 has both upper and lower sides. A standing wall 28 that rises from the back side end is provided on the front side of the back side end.
9 is provided. Further, standing walls 30 rising from the upper surface are provided at both longitudinal end portions of the rear side of the upper surface of the antenna holder 12, and standing walls rising from the surface of the back side end are provided at the rear side of the back side end. (This is hidden in the figure). Although not shown in FIG. 2, the standing wall 2 is also provided on the lower surface of the antenna holder 12.
You may provide the same standing wall as 8,30.

The antenna holder 12 further has a coupling structure portion for coupling with the printed circuit board 11 in the middle part thereof. That is, when the antenna holder 12 is viewed from the front side, the upper left corner has a substantially step shape (or step shape).
To expose the step portion 31 and the step surface 32. A printed board housing groove 33 is formed in the middle part of the step portion 31 so as to be cut into the main body of the antenna holder 12 up to an intermediate portion in a slit shape, while the printed board housing groove 33 has substantially the same level. A printed circuit board housing hole 34 that penetrates the main body of the antenna holder 12 in the front-rear direction is formed on the side of. Further, a printed circuit board supporting rib 35 rising from the step surface 32 is provided at a predetermined position on the front side of the step surface 32. The slide stoppers 15 described above are provided on the ceilings of the printed circuit board accommodating grooves 33 and the printed circuit board accommodating holes 34 so as to project from the respective ceiling surfaces, and the contact protrusions are provided from the floor surface of the printed circuit board accommodating holes 34. 17 are provided. Further, below the floor of the printed circuit board accommodating hole 34,
A through hole 36 is formed so as to extend in the front-rear direction of the antenna holder 12 so that the floor portion of the printed circuit board housing hole 34 is thin, and the floor portion serves as the thin beam 16 described above.

Further, as shown in FIG. 3, the antenna holder 12 is initially shaped separately into an upper half and a lower half of the step 31 at the middle part of the step 31. 12b and.
As is apparent from FIG. 3, the antenna holder 12 is provided with connecting portions 37 and 38 at the front and rear ends thereof, which integrally connect the upper holder body 12a and the lower holder body 12b, and the printed circuit board housing. The groove 33 and the printed circuit board housing hole 34 communicate with each other at the rear side of the connecting portion 37. A first guide post 39, which is a guide member for guiding the printed circuit board 11 when the printed circuit board 11 is inserted into the printed circuit board housing groove 33, is provided upright on the rear side of the printed circuit board housing groove 33. Accommodation hole 34
A second guide post 40, which is a guide member for guiding the printed circuit board 11 when the printed circuit board 11 is inserted into the printed circuit board housing hole 34, is provided upright on the rear side portion. In this embodiment, a pair of guide ribs are formed on the outer circumference of the second guide post 40 of the first and second guide posts 39 and 40 in a diametrical relationship with each other in the front-rear direction of the antenna holder 12. 41 are provided adjacently (or integrally). The first and second guide posts 39, 40 and the guide ribs 41 serve as a guide as described above, and serve as a connecting portion that integrally connects the upper holder body 12a and the lower holder body 12b. It also has a function. Then, halves of the connecting portions 37, 38 and the first and second guide posts 39, 40 and the guide ribs 41 are also provided on the bottom surface of the upper holder body 12a, and the respective end faces are bonded or heat-sealed with an adhesive. The antenna holder 12 is completed by the integration. The entire antenna holder 12 may be manufactured by integral molding.

Next, as for the printed circuit board 11, as shown in FIG. 4, the edge 11a of the printed circuit board 11 on the side where the printed circuit board 11 is coupled to the antenna holder 12 is substantially L-shaped to be engaged with the first guide post 39. The first guide groove 42 and the second
A second guide groove 43 having a substantially L-shape that engages with the guide post 40 and the guide rib 41, and a notch 44 into which the connecting portion 38 enters when the printed circuit board 11 and the antenna holder 12 are coupled. There is. In the description of the antenna holder 12, the first guide post 39 is independent by itself, whereas the second guide post 40 is provided with the outer side 1 adjacent to the printed circuit board 11 and the antenna holder 12. The former guides the printed circuit board 11 by loosely engaging with the first guide groove 42, while the latter guides the second guide groove 43.
This is for guiding the printed circuit board 11 by engaging with it slightly tightly (that is, without a gap) and for fixing and positioning it.

A first guide end surface 45 that abuts against the connecting portion 37 is provided at a portion of the connecting side edge portion 11a of the printed circuit board 11 corresponding to the connecting portion 37, while a notch portion 44 is provided.
A second guide end surface 46 is provided at the abutting portion of the inner edge of the guide end portion 45 for contacting the guide end surface 45 with the connecting portion 37 and the rear side portion 38a of the connecting portion 38 at the same time. A first guide stop portion 47 is provided at the outermost end of the first guide groove 42 so that the first guide post 39 abuts to regulate the position of the printed circuit board 11. A second guide stop 40 that abuts the second guide post 40 to regulate the position of the printed circuit board 11 is provided at the inner end, and a connecting portion is provided at the rear edge of the cutout 44 in the sliding direction of the printed circuit board 11. A third guide stop portion 49 is provided that abuts the rear end surface 38b of 38.

Further, in FIG. 4, two lands 50 are provided on the upper surface of the printed board 11 at a portion corresponding to the vicinity of the front end of the antenna holder 12 of the printed board 11, while the end of the printed board 11 is provided. Notch 5 in the part
Two through-holes 52 each having an opening 1 are opened. The notch 51 of the through hole 52 has a thin rib structure so that the notch elastically opens and closes when an external force is applied. An electrode member 53 similar to the land 50 is provided around the through hole 52. The land 50 and the electrode member 53 serve as a conductive member for electrically connecting the printed circuit board 11 to the antenna 13.

The assembling work of the antenna structure of the portable electronic device having the above structure will be described below. Two antennas 13 are incorporated in advance in the antenna holder 12, and are mounted by sliding on the printed circuit board 11 as an assembly component. Antenna holder 1 for antenna 13
The antenna 13 is attached to the center rib 20, the first stopper 21, the second stopper 22, the third stopper 24 and the standing wall of the antenna holder 12 at the front side of the center ribs 20 and 23. 28,
The antenna holder 12 is circulated and attached while being sandwiched by the 29, and the outer peripheral surface contact portion 19 has the center rib 2
5 and the holding rib 26 on the front side so as to be installed in the groove formed. Similarly, the other antenna 13 is attached to the center rib 20 of the antenna holder 12,
At the rear position of 23, the antenna holder 12 is circulated and attached while being sandwiched by the center rib 20, the first stopper 21, the second stopper 22, the third stopper 24, and the standing wall 30. Contact part 19
Is installed in a groove formed between the center rib 25 and the rear sandwiching rib 27.

When the antenna 13 is incorporated in the antenna holder 12 in this way, the first stopper 21 and the second stopper 2 provided on the center ribs 20 and 23 are provided.
The antenna 13 is operated by the action of the second and third stoppers 24.
Of the standing walls 28, 29, 30 is prevented.
This prevents the antenna 13 from slipping out laterally, that is, in the front or rear direction. Such a structure for preventing the antenna 13 from coming off is schematically shown in FIG. That is,
The antenna 13 is provided with respect to the antenna holder 12 as first to third stoppers 21, 22, 2 which are retaining ribs.
4 and the standing walls 28, 29, 30 are fixed by being alternately arranged in the X, Y, Z directions in FIG. Of these, the vertical walls 28, 28a, 29, 30, 30a prevent the antenna 13 from coming off in the X direction, that is, in the lateral direction. In the Y direction, that is, the antenna 13
The first stopper and the third stopper 21 prevent the removal in the radial direction, and the second stopper 22 prevents the removal in the Z direction (which also hits the antenna 13 in the radial direction). . Further, the antenna pitch of the two antennas 13 attached by the center ribs 20, 23, 25 is kept constant.

After that, an antenna assembly part in which the antenna 13 is incorporated in the antenna holder 12 is attached to the printed board 11. First provided on the printed circuit board 11
By fitting the first guide post 39 and the second guide post 40 of the antenna holder 12 into the guide groove 42 and the second guide groove 43 of the antenna holder 12, respectively, the antenna holder 12 can be positioned with respect to the printed circuit board 11. It is fixed. For this attachment, first, the antenna assembly component is moved and joined to the printed circuit board 11 in the X direction from the front side to the rear side (from the lower right to the upper left in FIG. 4).
As a result, the first guide post 39 moves the first guide groove 4
2 into the second guide post 40 and the guide rib 41 into the second guide groove 43, and the connecting portion 38 into the notch 44. Then, when the antenna assembly component is moved by a certain size, the connecting portion 37 abuts on the first guide end surface 45 that is the outer shape portion of the printed circuit board 11, and at the same time, the rear side portion 38a of the connecting portion 38 moves toward the second guide end surface. It abuts 46 and stops the movement of the antenna assembly component in the X direction.

Next, the antenna assembly component is moved relative to the printed board 11 in the Z direction from the front side to the back side (from the lower left to the upper right in FIG. 4). As a result, the first guide post 39 changes its direction in the first guide groove 42 in a direction perpendicular to the first guide post 42, enters the first guide post 39, and abuts on the first guide stop part 47 at the innermost part, and the second guide post 40 moves to the second guide post 40. Guide groove 4
3 turns into a right angle direction, enters and collides with the second guide stop part 48 of the innermost part, and the connecting part 38 turns in a right angle direction in the notch 44 and advances to the back end face 3 thereof.
The movement of the antenna assembly component in the Z direction is stopped by the 8b hitting the third guide stop portion 49. At this time, since the guide rib 41 is attached to the second guide post 40, the play in the sliding plane direction when the antenna holder 12 is slid with respect to the printed circuit board 11 is absorbed. Then, when the antenna holder 12 is slid and attached to the printed circuit board 11 as described above, the side contact portion 18 of the antenna 13 presses the printed circuit board 11 from above and the land 5 thereon.
It reaches the position of 0 and contacts this land 50. Further, the outer peripheral surface contact portion 19 of the antenna 13 is fitted into the through hole 52 from the outside in the radial direction through the notch 51 formed in the end surface of the printed board 11, and contacts the electrode member 53.

FIG. 6 is a schematic diagram of dimension setting of the slide configuration of the printed board 11 and the antenna holder 12, and the structure of each part of the printed board 11 and the antenna holder 12 is schematically shown. In this figure, reference symbol A is the relative movement amount of the connecting portion 38 between before and after sliding when the antenna assembly component is attached to the printed circuit board 11, B is the relative movement amount of the connecting portion 37, and C is the second. The relative movement amount of the guide post 40, D is the relative movement amount of the first guide post 39, E is the relative movement amount of the side surface contact portion 18 of the antenna 13, and F is the relative movement amount of the outer peripheral surface contact portion of the antenna 13. Show. When the antenna holder 12 is slid, all the members move from the position indicated by the hatched line in FIG. 6 to the position indicated by the hatched line, and A = B = C = D = E = F (= sliding amount) .

In the figure, reference numeral l is the second guide groove 43.
And the notch 46, m is the distance between the first and second guide grooves 42 and 43, n is the depth from the outer edge of the printed board 11 to the second guide groove 43, and p is the printed board. The depth dimension from the outer edge of 11 to the first guide groove 42. The values of l, m, n and p are determined by the strength of the printed board 11 and the outer shape processing method. On the other hand, q is the distance from the first guide groove 42 to the land, and r is the distance from the land 50 to the through hole 52. The q and r dimensions near the land 50 on the printed circuit board 11 are determined by the presence or absence of wiring, the dimension between lands, and the dimension between the land and the outer shape of the printed circuit board. The guide groove dimensions H and I of the printed circuit board 11 are determined by the diameters of the guide posts 39 and 40 of the antenna holder 12.

FIG. 7 is a view showing a fitted state of the printed circuit board 11 and the antenna holder 12. Of these, Figure 7
FIG. 7A is a diagram showing a fitted state when the antenna holder 12 is slid in the X direction, and FIG. 7B is a diagram showing a fitted state when the antenna holder 12 is slid in the Z direction. As shown in FIG. 7A, first, the antenna holder 12 is moved in the X direction in FIG.
The end portion 1 enters into the printed board housing groove 33 and the printed board housing hole 34. At this time, the printed circuit board housing groove 3
In 3, the end portion of the printed circuit board 11 hits the slide stopper 15 and lifts it up to bend and deform the ceiling portion. Therefore, the ceiling portion of the printed circuit board housing groove 33 has a beam (that is, a cantilever beam) structure that is thinly formed and elastically deformable, and has a function as a substrate pressing member like the thin beam 16. . Further, in the printed board housing hole 34, the end portion of the printed board 11 hits the slide stopper 15 and the contact protrusion 17 to bend and deform the thin beam 16. Due to this bending deformation, the printed circuit board 11
Even if there is a variation (t) in thickness, it can be followed. After that, when the antenna holder 12 is moved in the Z direction (right direction in FIG. 7) as shown in FIG. 7B, the slide stopper 15 is disengaged from the printed board 11 and returns to the position before the insertion of the printed board 11, The movement of the printed circuit board 11 in the direction opposite to the sliding direction is restricted. Further, the contact protrusions 17 still contact the lower surface of the printed circuit board 11 to bend and deform the thin beam 16, and sandwich the printed circuit board 11 with a stable contact pressure to absorb vertical play.
At this point, the first and second guide posts 39 and 40 have the first and second guide grooves 4 respectively, as is clear from the description given with reference to FIGS. 4 and 6.
Since it reaches the maximum of 2 and 43, the printed circuit board 11
Is prevented from falling off in the X direction. In FIG. 7, the state of flexural deformation of the contact beam 16 and the like is exaggerated for easy understanding.

At the final stage, at the soldering point 14, the land 50 and the side contact portion 18 of the antenna 13 in contact with this are soldered from one side, and the electrode member 53 around the through hole 52 and the antenna. The antenna 13 is connected to the printed circuit board 11 by soldering the outer peripheral surface contact portion of 13 from one surface. As described above, the cut portions of the antenna 13 are connected to the land 50 and the electrode member 53, which are conductive terminal portions of the printed circuit board 11, as the side contact portion 18 and the outer peripheral contact portion 19, respectively. In order to improve soldering strength and soldering workability, the cross-sectional shape may be crushed. Further, in this embodiment, a round metal rod or a wire is used as the material of the antenna 13, but a plate or the like may be used. Further, when the antenna holder 12 is molded, the antenna 13 may be incorporated in a molding die and the antenna holder 12 and the antenna 13 may be integrally molded.

In this embodiment, in order to connect the printed board 11 and the antenna holder 12, guide grooves 42 and 43 are attached to the printed board 11 and guide members such as guide posts 39 and 40 are attached to the antenna holder 12. However, the mounting relationship of these members may be reversed. Further, in this embodiment, the antenna holder 1
A slide stopper 15 that prevents the engaging portions of the two members from coming off when the printed circuit board 11 and the printed circuit board 11 are joined.
Is provided on the antenna holder 12, but such a stopper member may be provided on the printed circuit board 11.

[0026]

As described above, according to the present invention, the loop antenna and the antenna holder are integrated into one antenna assembly component, the conductive member with which the antenna contacts is provided on the printed circuit board, and the antenna holder and the print are also provided. The board can be assembled by simply sliding the antenna assembly parts by the engagement of the guide member and the guide groove, and the soldering can be completed only on one side, so that the workability in assembling this antenna structure can be improved. Various effects can be obtained such that the efficiency of the parts management can be improved by assembling the parts, and the variation in size and shape after manufacturing can be suppressed.

[Brief description of drawings]

FIG. 1 is a perspective view showing a configuration of an antenna structure of a portable electronic device according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a partially disassembled antenna assembly component in the embodiment.

FIG. 3 is a perspective view showing the internal structure of the antenna holder according to the embodiment divided into upper and lower divided bodies.

FIG. 4 is a partial perspective view illustrating a structure of a coupling end portion of a printed board and an engagement state with an antenna holder in the embodiment.

FIG. 5 is a side cross-sectional view schematically showing a structure for preventing the antenna from coming off, which is assembled to the antenna holder in the embodiment.

FIG. 6 is a schematic diagram illustrating dimension setting of a slide configuration of a printed circuit board and an antenna holder in the embodiment.

FIG. 7 (a) is a front view showing a fitted state of the printed circuit board and the antenna holder when the antenna holder is slid in the X direction. (B) The printed circuit board and the antenna holder when the antenna holder is slid in the Z direction. Front view showing the mated state of

FIG. 8 is a perspective view showing an example of an antenna structure of a conventional portable electronic device.

[Explanation of symbols]

 11 Printed Circuit Board 12 Antenna Holder 13 Antenna 15 Slide Stopper 16 Thin Beam (Substrate Holding Member) 17 Contact Protrusion 18 Side Contact (Cut End) 19 Peripheral Surface Contact (Cut End) 21, 22, 24 Stopper 23, 25 Center rib 28, 29, 30 Standing wall 39, 40 Guide post (guide member) 42, 43 Guide groove 44 Notch portion 47, 48, 49 Guide stop portion 50 Land (conductive member) 51 Notch 52 Through hole 53 Electrode member (conductive member) )

Claims (5)

[Claims] 1. An antenna formed in a substantially loop shape and cut at one corner, and an antenna holder that supports the antenna in a state where the antenna is prevented from coming off laterally and radially.
A printed circuit board having a locking part that engages with the antenna holder and a conductive member that comes into contact with a cut end of the antenna to realize an electrical connection with the antenna, and couples the antenna holder to the printed circuit board. At the same time, a cut end of the antenna is brought into contact with a conductive member of a printed circuit board, which is an antenna structure of a portable electronic device. 2. A guide member is provided on one of the antenna holder and the printed circuit board, while a guide groove is provided on the other side, and the guide member and the guide groove are engaged with each other to separate the antenna holder and the printed circuit board. The antenna structure for a portable electronic device according to claim 1, wherein the antenna structure is coupled with the antenna structure. 3. A stopper member is provided on at least one of the antenna holder and the printed circuit board to prevent the engagement portion from being disengaged when the antenna holder and the printed circuit board are coupled. The antenna structure for a portable electronic device according to claim 1 or 2. 4. One of the cut ends of the antenna is formed so as to be in pressure contact with the printed circuit board, and an open through hole, a part of which is cut away, is formed in the printed circuit board, and the other end of the antenna is formed. 4. The antenna structure for a portable electronic device according to claim 1, wherein the cut end is fitted into the through hole from the outside in the radial direction through the notch. 5. The board holding member, which is elastically deformed when the two members are engaged with each other and holds the printed circuit board, is provided at an engaging portion of the antenna holder with the printed circuit board. 4. The antenna structure for a mobile electronic device according to any one of 4 above.