JPH0878944A - Planar antenna for portable telephone set and manufacture thereof - Google Patents

Abstract

PURPOSE: To provide the planar antenna for portable telephone set which is composed of a flexible dielectric substrate and sheath and equipped with flexibility, bending resistance and restorableness. CONSTITUTION: A planar dielectric substrate 11 is provided with flexibility and equipped with the values of properly of matter of a dielectric constant of ε<=3.5 and a dielectric tangent tanδof <=0.005. The planar antenna is formed of an antenna part 16 formed by a strip conductor 14 formed on one face of the dielectric substrate 11 and a ground side conductor 15 formed on the other face and sheaths 12 and 13 incorporating the antenna part 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antenna for a small portable radio communication device such as a mobile phone and a manufacturing method thereof.

[0002]

2. Description of the Related Art FIG. 38 shows the structure of a sleeve antenna shown in, for example, the paper B-104 "Microstrip line feed type coil loading sleeve antenna" (Furukawa et al.) Of the 1990 Autumn National Conference of the Institute of Electronics, Information and Communication Engineers. In the figure, 100 is a radio main body, 11 is a dielectric substrate, and 14
Is a strip conductor formed on one surface of the dielectric substrate 11, 101 is a coil-shaped conductor connected to the strip conductor, 15 is a ground-side conductor formed on the other surface of the dielectric substrate 11, and 1 is The antenna is composed of a dielectric substrate 11, a strip conductor 14, a coil-shaped conductor 101, and a ground-side conductor 15.

Next, the operation of the mobile phone antenna will be described. In the mobile phone antenna, the antenna 1 is housed inside the radio main body 100 to improve portability when not in use. Further, in the use state, the antenna section 16 is pulled out from the inside of the radio main body 100 to improve the communication function.

Therefore, in order to put the antenna 1 into practical use as a mobile phone antenna, it is easy to handle the antenna 1 when it is housed or pulled out, and it is flexible and flexible against external force when the antenna unit 1 is pulled out. Is essential. Further, a function of protecting the dielectric substrate 11, the strip conductor 14, the coil-shaped conductor 101, and the ground side conductor 15 which form the antenna 1 from external force and environmental stress is required.

Still another conventional example will be described with reference to FIG. FIG. 39 is a front view showing a conventional plate antenna shown in Japanese Utility Model Publication No. 5-5686. In the figure, 11 is a dielectric substrate, 14 is a strip conductor, 15 is a ground side conductor, 201 is a first radiating element, 202 is a second radiating element, 203 and 204 are connecting elements, and 205 and 2
Reference numeral 06 is a folded line.

Next, the operation will be described. Dielectric substrate 1
The strip conductor 14 is made of a metal film adhered to the surface of 1
And the position of the upper edge of the back surface of the dielectric substrate 11 substantially coincides with the position of the upper edge of the strip conductor 14, and
Ground-side conductor 15 provided in parallel with the strip conductor
It is formed by a metal film deposited on. First radiating element 2
01 has a wider width than the width of the strip conductor 14,
The length is approximately 1/4 of the resonance wavelength and is connected to the strip conductor 14. The second radiating element 202 has a lateral width as wide as the first radiating element 201, has a length different from that of the first radiating element 201, and insulates the second conductor from the ground side conductor 15. The connection elements 203 and 204 electrically connect the lower end of the first radiating element 201 and the lower end of the first radiating element 202. The folded lines 205 and 206 are metal films formed by branching and coating downward from both corners of the upper end edge of the ground side conductor 15 and each having a first length.
It is formed to be approximately 1/4 of the intermediate wavelength between the resonant wavelength of the radiating element 201 and the resonant wavelength of the second radiating element 201.

[0007]

The conventional plate-shaped antenna for a portable telephone has only the electrical specifications and structure for realizing the radiation characteristics as an antenna as described above, and is provided when it is used as a product. The mechanical structure, appearance, and manufacturing method that should be used were not shown, and there was a problem in feasibility.

The present invention has been made in order to solve the above-mentioned problems, and is capable of realizing flexibility, bending resistance, and restoration to an initial state, and has a mobile phone having an appearance to be provided as a product. It is an object of the present invention to obtain a plate antenna, and further to provide a manufacturing method suitable for the plate antenna for mobile phones.

[0009]

A plate-shaped antenna for a mobile phone according to the present invention comprises an antenna body and an outer skin containing the antenna body, and the antenna body has flexibility, dielectric characteristics, and a joint hole. And a strip conductor having a first contact formed on the first surface of the dielectric substrate, and a second conductor formed on the second surface of the dielectric substrate.
And a ground-side conductor having contact points, the outer skin has flexibility and dielectric characteristics with a contact hole into which the first contact point and the second contact point are inserted, and the inner wall on the strip conductor side and the outer wall. The inner wall on the ground side conductor side is fusion-bonded to each other through the joining hole.

Further, the outer conductor has recesses similar to the shape of the strip conductor and the ground side conductor, and the strip conductor and the upper ground side conductor sink into these recesses.

Further, the strip conductor and the ground side conductor are composed of a conductor obtained by plating an Ni--Ti alloy with copper.

Further, the above-mentioned antenna body is formed by bonding with a fluororesin prepreg.

Further, the antenna body is coated with a silicon-based moistureproof agent.

Further, the strip conductor and the ground side conductor are provided with an insulating reinforcing sheet fixed to the surfaces thereof.

Further, the strip conductor and the conductor on the ground side are provided with linear elastic metal fixed to the surface.

The strip conductor and the ground-side conductor are provided with an insulating reinforcing sheet fixed to the surface of a linear elastic metal fixed to the surface of the conductor.

Further, a dielectric substrate having flexibility and dielectric characteristics, a flexible first insulating reinforcing sheet provided on the first surface side of the dielectric substrate, and the first dielectric reinforcing sheet. And a strip conductor having a first contact formed on the first surface side of the dielectric substrate of the insulation reinforcing sheet and having flexibility provided on the second surface side of the dielectric substrate. A second insulation reinforcing sheet, a ground side conductor having a second contact formed on the second surface side of the dielectric substrate of the second insulation reinforcing sheet, the dielectric substrate and the strip. A first insulating reinforcing sheet having a conductor formed thereon and a second conductor having a ground side formed thereon
Insulation reinforcing sheet is built in, and it is provided with a contact hole into which the first contact and the second contact are inserted, and an outer skin having flexibility and dielectric characteristics.

Further, the above-mentioned dielectric has recesses similar to the strip conductor and the ground-side conductor, and the strip conductor and the ground-side conductor sink into these recesses.

Further, the outer shape of the outer cover is curved to be substantially U-shaped.

Further, the antenna main body and the outer cover are curved to have a substantially U-shaped cross section.

The tip of the outer cover is covered with a substantially circular sleeve.

Further, the antenna main body and the outer cover are twisted at a predetermined angle around the central axis in the length direction.

Also, a step of forming a strip conductor on the first surface of the dielectric substrate and a ground side conductor on the second surface, and a first contact point on the strip conductor and a second contact point on the ground side conductor. A step of joining, a step of forming an outer cover accommodating the dielectric substrate on which the strip conductor and the ground-side conductor are formed into a first outer cover and a second outer cover, and the first outer cover And the second outer skin are fused together, and the inner walls of the first outer skin and the second outer skin corresponding to the joining holes provided in the dielectric substrate are extruded into the joining holes to perform the fusion joining. And the process.

Further, a step of forming a strip conductor on the first surface and a ground side conductor on the second surface of the dielectric substrate, a first contact point on the strip conductor and a second contact point on the ground side conductor. A step of joining, a step of forming a first outer cover of a shape obtained by dividing an outer cover accommodating the dielectric substrate on which the strip conductor and the ground-side conductor are formed into a first outer cover and a second outer cover, The second outer cover is formed and fused with the first outer cover, and the inner walls of the first outer cover and the second outer cover corresponding to the joint holes formed in the dielectric substrate are extruded into the joint holes. And a step of fusion bonding.

Also, a step of forming a strip conductor on the film, a step of fusing a resin on the strip conductor of the film to transfer the strip conductor and forming a first outer cover, and a step of forming the film on the first layer And a step of forming a second outer cover by fusing resin on the first outer cover and the strip conductor.

In the step of forming the outer skin,
The outer cover is formed by applying tension to the antenna body in the mold.

In the step of forming the outer skin,
The outer cover is formed by compression molding after forming a general shape of the outer cover while applying tension to the antenna main body in a mold.

Further, in the step of joining the first contact to the strip conductor and the second contact to the ground side conductor, heating and pressurization are simultaneously performed for soldering.

[0029]

[Action]

The plate-shaped antenna for a mobile phone according to the present invention has flexibility in the dielectric substrate, the strip conductor, the ground-side conductor, and the outer cover that form the antenna section, and the connection is made through the bonding hole of the dielectric substrate. When the inner wall of the outer skin is fusion-bonded to each other, flexibility, bending resistance and resilience can be obtained.

Further, since the outer conductor is provided with recesses similar to the shape of the strip conductor and the ground side conductor, both conductors are allowed to sink into these recesses, so that the bondability with the outer cover is improved.

Since the strip conductor and the conductor on the ground side are conductors obtained by plating an Ni-Ti alloy with copper, the flexibility, bending resistance, and resilience are further improved.

Further, since the antenna body is adhered by the fluororesin prepreg, the dielectric characteristics can be prevented from being impaired.

Further, since the antenna body is coated with the silicon-based moistureproof agent, the weather resistance is improved.

Further, since the insulating reinforcing sheet is fixed to the surfaces of the strip conductor and the ground-side conductor, the flexibility, bending resistance and restoring property are further improved.

Further, since the linear elastic metal is fixed to the surfaces of the strip conductor and the ground side conductor, the flexibility, the bending resistance and the restoring property are further improved.

Further, since the strip conductor and the insulating reinforcing sheet adhered to the surface of the linear elastic metal adhered to the surface of the ground side conductor are provided, the flexibility, the bending resistance and the restoring property are further improved. improves.

Further, since the dielectric substrate, the strip conductor, the ground side conductor, the insulating reinforcing sheet and the outer cover have flexibility, flexibility, bending resistance and resilience can be obtained.

Further, since the strip conductor has concave portions similar to the shape of the conductor on the upper ground side and both conductors sink into these concave portions, the bondability with the outer skin is improved.

Further, since the outer cross-section of the outer cover is curved to have a substantially U-shape, the flexibility, bending resistance and restoring property are further improved.

Further, since the antenna body and the outer cover are curved to have a substantially U-shaped cross section, the flexibility, the bending resistance and the restoring property are further improved.

Further, since the tip of the outer cover is covered with a substantially circular sleeve, the appearance and the extractability of the antenna can be improved.

Further, since the antenna body and the outer cover are twisted around the central axis in the longitudinal direction at a predetermined angle, the flexibility, the bending resistance and the restoring property are further improved.

Further, the step of forming a strip conductor on the first surface of the dielectric substrate and the step of forming a ground side conductor on the second surface, and fusing the first outer cover and the second outer cover together with the dielectric substrate The inner walls of the first outer skin and the second outer skin corresponding to the provided joint holes are extruded into the joint holes, and can be easily manufactured by the process of fusion bonding.

The first step is to form a strip conductor on the first surface of the dielectric substrate and a ground side conductor on the second surface.
The antenna part is positioned with high accuracy and stabilized by the step of forming the first outer cover having a shape divided into the outer cover and the second outer cover, and the step of forming the second outer cover and fusing the first outer cover Performance is obtained.

Further, the step of forming the strip conductor on the film and the step of transferring the strip conductor by fusing the resin on the strip conductor of the film and forming the outer cover allow the antenna section to be formed in the outer cover with high accuracy. Positioned and stable performance is obtained.

Further, in the step of forming the outer cover, the outer cover is formed while tension is applied to the antenna main body in the mold, so that the antenna portion is positioned in the outer cover with high accuracy and stable performance can be obtained.

In the step of forming the outer cover, the outer cover is formed by compression molding after forming the general shape of the outer cover while applying tension to the antenna main body in the mold.
The antenna part is positioned with high accuracy in the outer skin, and stable performance can be obtained.

Further, in the step of joining the first contact to the strip conductor and the second contact to the ground side conductor, heating and pressurization are simultaneously performed for soldering, so that positioning is performed with high accuracy and stable performance is obtained. Can be obtained.

[0050]

【Example】

Example 1. An embodiment of the present invention will be described below with reference to the drawings. 1 is an exploded perspective view of a plate antenna for a mobile phone according to an embodiment of the present invention, FIG. 2 is a perspective view after assembly, FIG. 3 is a sectional view taken along line AA of FIG. 2, and FIG. 4 shows a manufacturing method. It is a figure. In FIG. 1, 1 indicates the whole plate antenna, and 11
Is a dielectric substrate formed of a material having ε of 3.5 or less and tan δ of 0.005 or less in a predetermined shape and size, 11a
Is the front surface of this dielectric substrate 11, 11b is the back surface, 1
1c is a plurality of outer joint holes provided at predetermined positions of the dielectric substrate 11, 14 is a strip conductor formed on the front surface of the dielectric substrate 11, 14a is a straight portion forming the strip conductor 14, and 14b is The folded portion constituting the strip conductor 14 is a contact A formed at one end of the linear portion 14a, and 14d is a contact B formed at the other end of the linear portion 14a.

Reference numeral 15 is a ground side conductor (substantially E-shaped) formed on the rear surface 11b, 15a is a contact C formed at one end of the ground side conductor 15, and 16 is a dielectric substrate 11, a strip conductor 14 and a ground side conductor. 15 and contact points A14c, B1
4d, an antenna section composed of C15a.

Reference numeral 12 is a front cover that covers the front surface 11a of the dielectric substrate 11 and the strip conductor 14, and its material is ε.
≦ 3.5, tan δ ≦ 0.005, elastic modulus (hereinafter referred to as E) ≧ 100 kg f / cm ² physical properties, the cross-sectional shape is substantially concave, and the entire thickness of the antenna portion 16 is It is pre-molded into a tray shape that covers about 1/2.

Reference numerals 12a, 12b and 12c denote a contact point A14c, a contact point B14d and a contact point C15a formed on the antenna portion.
Are contact holes A, B, and C that are inserted and fixed in a state of protruding from the front skin 12. Therefore, contact A14c, contact B1
4d, the contact C15a has a thickness equal to or greater than the thickness of the front cover 12.

Reference numeral 13 denotes a back surface skin that covers the back surface 11b of the dielectric substrate 11 and the ground-side conductor 15.
It is pre-molded with the same material and shape.

Reference numerals 12d and 13b are joint surfaces to be joined after the antenna portion 16 is housed inside the front skin 12 and the back skin 13.

Next, the above-mentioned dielectric substrate 11 and outer cover 1
Materials 2 and 13 will be described. The materials used for the dielectric substrate 11 and the outer skins 12 and 13 are preferably those having a low dielectric constant and a low dielectric loss tangent, such as polyethylene, polypropylene,
Polystyrene, polymethylmethacrylate, polybrylene terephthalate, polyethylene terephthalate, AB
S, polymethylpentene, polyphenylene oxide,
Known or commercially available thermoplastic and thermosetting resins such as polycarbonate, liquid crystal polymer, polyether sulfone, polyimide, polyether ether ketone, polytetrafluoroethylene, thermoplastic elastomer, and silicone resin can be used.

The same effect can be obtained by polymer blending a thermoplastic resin with another thermoplastic resin.

Next, a manufacturing procedure of the plate antenna for a mobile phone according to this embodiment will be described with reference to FIGS. As shown in FIG. 1, the antenna portion 16 has a strip conductor 14 on the front surface 11a of the dielectric substrate 11 and a ground-side conductor 15 on the back surface 11b by a printed pattern such as a copper foil. Next, a contact A14c and a contact B are provided at predetermined positions of the strip conductor 14 and the ground side conductor 15.
14d and the contact C15a are soldered to complete the antenna section 16.

Next, when the front skin 12 and the back skin 13 are in a joined state, the antenna portion 16 can be built therein, and the front skin 12 and the back skin 13 join the joint surface 12d,
Pre-molding is performed by injection molding into the shapes to be joined at 13b. As an example of pre-molding, a case where a polypropylene resin (trade name MX3D: Mitsubishi Yuka Co., Ltd.) which is a thermoplastic resin and a thermoplastic olefin type elastomer resin (trade name Thermoran 215B: Mitsubishi Yuka Co., Ltd.) are used are explained. To do. MX3D and 215B were blended with an extruder at 210 ° C. in a weight ratio of 3: 7 to form pellets, and using these pellets, molding temperature 210 ° C., injection pressure 50 MPa, injection time 3 seconds, mold temperature 40 ° C., cooling. A pre-molded front cover 12 and back cover 13 were manufactured by injection molding for 20 seconds. (The dimensions of the premolded skins 12 and 13 are about 140 mm in length,
The width is about 6 mm and the thickness is about 0.6 mm)

Next, a method of fusing the joint surfaces 12d and 13b of the front outer skin 12 and the back outer skin 13 by press molding shown in FIG. 4 will be described. Mold 40 is 140m long
The shape of the plate antenna 1 is m, the width is 6 mm, and the thickness is 1.5 mm, and the mold is provided with positioning pins 41 and 42. One of the pre-molded outer skins 12 is set in the mold 40, placed on the outer skin 12 at a predetermined position of the antenna portion 16, and the other outer skin 1 is placed on the antenna portion 16.
Place 3 in place. Positioning holes 23 and 24 are provided in the outer skins 12 and 13 and the antenna portion 16, and the positioning holes 23 and 24 are formed in the positioning pins 41 and 42 of the mold.
A predetermined position is set by inserting 24, and the press conditions are a molding temperature of 170 ° C. and a pressure of 300 kg / cm ^2.
Then, the joint surfaces 12d and 13b of the front skin 12 and the back skin 13 are fusion-bonded. At this time, the outer skin 12 corresponding to the outer skin joint hole 11c provided in the dielectric substrate 11,
The inner wall of the back skin 13 is extruded into the outer skin joint hole 11c to perform fusion bonding and strengthen the bonding force.

The primolds of the outer skin 12 and the outer skin 13 of the front side may be formed by the following method. That is, when polypropylene resin which is a thermoplastic resin and trade name MX3D (Mitsubishi Petrochemical Co., Ltd.) are used, the outer skins 12 and 13 are pre-molded by press molding at a molding temperature of 200 ° C. and a pressure of 30 MPa.

Further, a thermoplastic olefin elastomer resin which is a thermoplastic resin; trade name Thermoran 3980B
(Mitsubishi Yuka Co., Ltd.), a polypropylene resin that is a thermoplastic resin; MX3D (Mitsubishi Yuka Co., Ltd.) and Thermon 3
980B was used in an extruder at a temperature of 210 ° C. and a weight ratio of 5: 5.
Molding using pellets blended with is possible.

Further, when a polyethylene resin which is a thermoplastic resin; trade name Mitsubishi Polyethylene HDJX10 (Mitsubishi Yuka Co., Ltd.) is used, the molding temperature is 200 ° C. and the injection pressure is 5
0 MPa, injection time 3 seconds, mold temperature 40 ° C., cooling time 2
The outer skins 12 and 13 may be pre-molded by injection molding for 0 seconds.

As described above, according to this embodiment,
Good handling when storing and pulling out the antenna 1.
Flexibility, bending resistance, and resilience to external force when the antenna is pulled out can be obtained, and the appearance can also be made good.

Example 2. Example 1 strip conductor 14
And the ground-side conductor 15 are formed by copper-plating a Ni—Ti based alloy, and the flexibility of the dielectric substrate 11 and the flexibility of the Ni—Ti based alloy are superposed on the flexibility, The bending resistance and the resilience are further improved, and the conductivity can be enhanced by copper-plating the conductor formed of the Ni—Ti alloy.

Example 3. Example 1 strip conductor 14
The conductor 15 formed of a Ni—Ti based alloy and the ground side conductor 15 is further acid-plated on a conductor formed of a Ni—Ti based alloy.
-The flexibility of the Ti-based alloy is superimposed to improve the flexibility, bending resistance, and resilience, and the conductivity and corrosion resistance can be enhanced.

Example 4. Example 1 strip conductor 14
Further, the ground side conductor 15 is formed of a beryllium copper plate, and the flexibility of the dielectric substrate 11 and the flexibility of the beryllium copper plate are overlapped with each other to further improve flexibility, bending resistance, and resilience.

Example 5. An embodiment 5 of the present invention will be described below.
It will be described with reference to the drawings. In the figure, 14 is a strip conductor formed of a flexible metal or the like into a predetermined shape,
Reference numeral 15 is a ground side conductor similarly formed of a flexible metal or the like, and 17 is a dielectric substrate 11 and a strip conductor 14.
And a fluororesin prepreg for bonding the ground side conductor 15.

With the fluororesin prepreg 17, the dielectric substrate 11, the strip conductor 14 and the ground side conductor 15 are formed.
It is possible to construct the antenna section by significantly bonding ε and tan δ as the antenna section 16 by bonding.

Example 6. An embodiment of the present invention will be described below with reference to FIG. In the figure, 18 is a silicon-based moistureproof agent that coats the entire periphery of the antenna section 16.

By coating the antenna portion 16 with the silicon-based moistureproofing agent 18, the strip conductor 14 and the ground-side conductor 15 can be protected from deterioration such as corrosion due to environmental conditions. Remarkably improved.

Example 7. An embodiment of the present invention will be described below with reference to FIG. In the figure, reference numeral 19 denotes an insulating reinforcing sheet having an insulating function and flexibility, which is fixed to the upper surfaces of the strip conductor 14 and the ground side conductor 15 formed on the antenna portion 16.

By fixing the insulating reinforcing sheet 19 to both surfaces of the antenna section, the flexibility of the dielectric substrate 11 of the antenna section 16 and the flexibility of the insulating reinforcing sheet 19 are overlapped to provide flexibility, Bending resistance and resilience are further improved.

Example 8. An embodiment of the present invention will be described below with reference to FIG. In the figure, 20 is a flexible linear elastic metal fixed to the upper surfaces of the strip conductor 14 and the ground-side conductor 15 formed in the antenna portion 16 without being electrically connected to each conductor. Is.

By fixing the elastic metal 20 to both surfaces of the antenna section 16, the dielectric substrate 1 of the antenna section 16 is formed.
The flexibility of 1 and the flexibility of the elastic metal 20 are overlapped with each other to further improve flexibility, bending resistance, and restorability.

Example 9. An embodiment of the present invention will be described below with reference to FIG. In the figure, 20 is a flexible linear elastic metal fixed to the upper surfaces of the strip conductor 14 and the ground-side conductor 15 formed in the antenna portion 16 without being electrically connected to each conductor. ,
Reference numeral 19 denotes an insulating reinforcing sheet fixed to the upper surface of each elastic metal 20 and having an insulating function and flexibility.

Elastic metal 20 and insulating reinforcing sheet 1
By fixing 9 to both surfaces of the antenna part 16, the flexibility of the dielectric substrate 11 of the antenna part 16 and the flexibility of the elastic metal 20 and the insulating reinforcing sheet 19 are overlapped, and the flexibility and resistance are improved. Flexibility and resilience are further improved.

Example 10. Strip conductor 1 of Example 7
4 and the ground-side conductor 15 are formed of a Ni—Ti-based alloy, the insulating reinforcing sheets 19 are fixed to both surfaces of the antenna section 16, and the dielectric substrate 1 of the antenna section 16 is formed.
1 has flexibility, the strip conductor 14 and the ground-side conductor 15 formed of a Ni—Ti alloy have the flexibility, and the insulating reinforcing sheet 19 further has flexibility, and the flexibility and bending resistance are superposed. Property and resilience are remarkably improved.

Example 11 Another embodiment of the present invention will be described below with reference to FIGS. 10 and 1
In FIG. 1, 22 is a recess similar to the strip conductor 14 and the ground side conductor 15 provided in the outer skins 12 and 13. In the state of being formed into the plate-shaped antenna 1, the strip conductor 14 and the ground-side conductor 15 are the outer skin 12,
Since it is formed so as to sink into the concave portion 22 provided in 13, the bondability with the outer skins 12 and 13 is improved.

Example 12 Another embodiment of the present invention will be described below with reference to FIG. In the drawing, 22 is a recess similar to the shapes of the strip conductor 14 and the ground side conductor 15 in the outer skins 12 and 13, and 19 is the antenna unit 1.
6 is an insulating reinforcing sheet having an insulating function and flexibility, which is fixed to the upper surface of each of the strip conductor 14 and the ground-side conductor 15 formed in 6.

Since the strip conductor 14 and the ground-side conductor 15 are formed so as to sink into the recesses 22 provided in the outer skins 12 and 13, the bondability with the outer skins 12 and 13 is improved and the insulating reinforcing sheet 19 is formed. By fixing to both sides of the antenna section 16, the dielectric substrate 1 of the antenna section 16
The flexibility of 1 and the flexibility of the insulating reinforcing sheet 19 are superimposed to further improve flexibility, bending resistance, and resilience.

Example 13 Another embodiment of the present invention will be described below with reference to FIG. In the figure, 20 is a flexible linear elastic metal fixed to the upper surfaces of the strip conductor 14 and the ground-side conductor 15 formed in the antenna portion 16 without being electrically connected to each conductor. Is. 22 is a strip conductor 1 on the outer skin 12 and 13.
4 and the ground-side conductor 15 are similar in shape to the recesses.

Since the strip conductor 14 and the ground-side conductor 15 are formed so as to sink into the recesses 22 provided in the outer skins 12 and 13, the bondability with the outer skins 12 and 13 is improved and the elastic metal 20 is flattened. The antenna part 16 is fixed to both sides of the antenna part 16 formed in the shape of a circle.
The flexibility of the dielectric substrate 11 and the flexibility of the elastic metal 20 are superimposed to further improve flexibility, bending resistance, and resilience.

Example 14. An embodiment of the present invention will be described below with reference to FIG. In the figure, 20 is a flexible linear elastic metal fixed to the upper surfaces of the strip conductor 14 and the ground-side conductor 15 formed in the antenna portion 16 without being electrically connected to each conductor. , 19 are insulating reinforcing sheets fixed to the upper surface of each elastic metal 20 and having an insulating function and flexibility. Two
Reference numeral 2 is a recess similar to the shapes of the strip conductor 14 and the ground side conductor 15 in the outer skins 12 and 13.

Since the strip conductor 14 and the ground-side conductor 15 are formed so as to sink into the recesses 22 provided in the outer skins 12 and 13, the bondability with the outer skins 12 and 13 is improved and the elastic metal 20 and the insulating property are improved. By fixing the reinforcing sheet 19 to both surfaces of the antenna section 16, the flexibility and the elastic metal 20 of the dielectric substrate 11 of the antenna section 16 are provided.
Further, the flexibility of the insulating reinforcing sheet 19 is superimposed to further improve flexibility, bending resistance, and restorability.

Example 15 Another embodiment of the present invention will be described below with reference to FIG. In the figure, 14 is Ni
A strip conductor made of a -Ti alloy, 15 a conductor on the ground side also made of a Ni-Ti alloy, 22
Is a recess similar to the strip conductor 14 and the ground-side conductor 15 provided on the outer skins 12 and 13.

In the state where the plate-shaped antenna 1 is molded,
The strip conductor 14 and the ground-side conductor 15 are the outer skin 1
Since it is formed so as to sink into the concave portion 22 provided in each of the conductors 2 and 13, the bondability with the outer skins 12 and 13 is improved, and the flexibility of each conductor is flexible, bendable, and flexible.
And improve resilience.

Example 16 Another embodiment of the present invention will be described below with reference to FIG. In the figure, reference numeral 19 denotes an insulating reinforcing sheet having an insulating function and flexibility, which is fixed to the upper surfaces of the strip conductor 14 and the ground-side conductor 15 formed of the Ni-Ti alloy of the antenna section 16. Reference numeral 22 is a recess similar in shape to the strip conductor 14 provided on the outer skins 12 and 13 and the ground-side conductor 15.

In the state where the plate-shaped antenna 1 is molded,
The strip conductor 14 and the ground-side conductor 15 are the outer skin 1
Since it is formed so as to sink into the recessed portions 22 provided in the antennas 2 and 13, the bondability with the outer skins 12 and 13 is improved, and the insulating reinforcing sheet 19 is formed on both surfaces of the antenna portion 16 formed in a planar shape. By fixing, the antenna part 1
Flexible conductors 1 of 6 dielectric substrates 11
The flexibility of the Ni—Ti alloy forming 4 and 15 and the flexibility of the insulating reinforcing sheet 19 are overlapped with each other, and the flexibility, the bending resistance, and the restoring property are further improved.

Example 17 Another embodiment of the present invention will be described below with reference to FIG. In the figure, 19 is an insulating reinforcing sheet having an insulating function, 14 is a strip conductor attached to the insulating reinforcing sheet 19, and 15 is a ground-side conductor similarly attached to the insulating reinforcing sheet 19.

By fixing the insulating reinforcing sheet 19 to both surfaces of the antenna portion 16 formed in a flat shape, the flexibility and the respective conductors 14 and 15 of the dielectric substrate 11 of the antenna portion 16 are formed. The flexibility of the Ni—Ti-based alloy and the flexibility of the insulating reinforcing sheet 19 are superposed on each other, and the flexibility, bending resistance, and resilience are further improved.

Example 18. Another embodiment of the present invention will be described below with reference to FIG. In the figure, 19 is an insulating reinforcing sheet having an insulating function, 14 is a strip conductor attached to the insulating reinforcing sheet 19, and 15 is a ground-side conductor similarly attached to the insulating reinforcing sheet 19. 20 is a strip conductor 14 and a ground-side conductor 1
5 is a flexible linear elastic metal fixed to the upper surface of each of 5 without electrically connecting to each conductor.

Elastic metal 20 and insulating reinforcing sheet 1
By fixing 9 to both surfaces of the antenna portion 16 formed in a flat shape, the flexible and elastic metal 20 of the dielectric substrate 11 of the antenna portion 16 and the insulating reinforcing sheet 1 are provided.
Flexibility, flex resistance, and restorability are further improved by superimposing the flexibility of 9 on.

Example 19 Another embodiment of the present invention will be described below with reference to FIG. In the figure, 19 is an insulating reinforcing sheet having an insulating function, 14 is a strip conductor in which the insulating reinforcing sheet 19 is coated with a Ni-Ti alloy, and 15 is also an insulating reinforcing sheet 19 having a Ni-Ti alloy. Is a conductor on the ground side.

By fixing the insulating reinforcing sheet 19 to both surfaces of the antenna part formed in a flat shape, the dielectric substrate 11 of the antenna part 16 has flexibility, and Ni for forming the respective conductors 14 and 15 is formed. The flexibility of the —Ti alloy and the flexibility of the insulating reinforcing sheet 19 are superposed, and the flexibility, bending resistance, and resilience are further improved.

Example 20. Another embodiment of the present invention will be described below with reference to FIG. In the figure, 19 is an insulating reinforcing sheet having an insulating function, 14 is a strip conductor attached to the insulating reinforcing sheet 19, 15 is a ground side conductor similarly attached to the insulating reinforcing sheet 19, 2
Reference numeral 2 is a recess similar to the strip conductor 14 and the ground-side conductor 15 provided on the dielectric substrate 11.

In the state where the plate-shaped antenna 1 is molded,
The strip conductors 14 and the ground-side conductors 15 are formed so as to sink into the recesses 22 provided in the dielectric substrate 11.

Since the strip conductor 14 and the ground-side conductor 15 are formed by being sunk in the dielectric substrate 11, both surfaces of the antenna portion 16 are flat, and the bondability with the outer skins 12 and 13 is improved, and at the same time, each conductor is The flexibility of has improved flexibility, bending resistance, and resilience.

Example 21. Another embodiment of the present invention will be described below with reference to FIG. In the figure, 19 is an insulating reinforcing sheet having an insulating function, 14 is a strip conductor attached to the insulating reinforcing sheet 19, 15 is a ground side conductor similarly attached to the insulating reinforcing sheet 19, 2
Reference numeral 2 is a recess similar to the shape of the strip conductor 14 and the ground side conductor 15 provided on the dielectric substrate 11, and 20 is a top surface of each of the strip conductor 14 and the ground side conductor 15 without being electrically connected to each conductor. It is a fixed linear elastic metal having flexibility.

In the state where the plate-shaped antenna 1 is molded,
The strip conductors 14 and the ground-side conductors 15 are formed so as to sink into the recesses 22 provided in the dielectric substrate 11.

Since the strip conductor 14 and the ground-side conductor 15 are formed by being sunk in the dielectric substrate 11, both surfaces of the antenna portion 16 are flat, so that the bondability with the outer skins 12 and 13 is improved and the antenna portion 16 is also improved. The flexibility of the dielectric substrate 11 and the flexibility of the elastic metal 20 and the insulating reinforcing sheet 19 are overlapped with each other to further improve flexibility, bending resistance, and restorability.

Example 22. Another embodiment of the present invention will be described below with reference to FIG. In the figure, 19 is an insulating reinforcing sheet having an insulating function, 14 is a strip conductor in which the insulating reinforcing sheet 19 is coated with a Ni-Ti alloy, and 15 is also an insulating reinforcing sheet 19 having a Ni-Ti alloy. Is a ground-side conductor, and 22 is a recess similar in shape to the strip conductor 14 and the ground-side conductor 15 provided on the dielectric substrate 11.

With the plate-shaped antenna 1 molded,
The strip conductors 14 and the ground-side conductors 15 are formed so as to sink into the recesses 22 provided in the dielectric substrate 11.

Since the strip conductor 14 and the ground-side conductor 15 are formed by being sunk in the dielectric substrate 11, both surfaces of the antenna portion 16 are flat, the jointability with the outer skins 12 and 13 is improved, and the antenna portion 16 is improved. The flexibility of the dielectric substrate 11 and the flexibility of both the conductors 14 and 15 and the insulating reinforcing sheet 19 formed of the Ni—Ti alloy are overlapped to provide flexibility, bending resistance, and resilience. Further improve.

Example 23. Another embodiment of the present invention will be described below with reference to the drawings. 23 and section B of FIG. 23
24 (a) to 24 (t) showing -B, the antenna portion 16 is left in a flat plate shape, and the outer skins 12 and 13 are premolded in a substantially U-shaped cross section.

In the state where the plate-shaped antenna 1 is molded,
Since the cross-sectional shapes of the outer skins 12 and 13 are formed into a substantially U shape,
The self-supporting property of the plate antenna 1 is improved and the antenna unit 1
The flexibility of 6 has flexibility, bending resistance, and resilience, and the function of the plate antenna 1 is improved.

Example 24. Another embodiment of the present invention will be described below with reference to the drawings. 26A to 26T showing the cross section C-C of FIG. 25 and FIG. 25, the antenna portion 16 having a substantially U-shaped cross section and the outer skins 12 and 13 are shown.
Has a substantially U-shaped cross section, and in the state of being molded into the plate-shaped antenna 1, the antenna section 16 and the outer covers 12 and 13 are configured to have a substantially U-shaped cross section. The self-supporting property of the plate-shaped antenna 1 is improved, and the flexibility of the outer skins 12 and 13 and the antenna part 16 are combined with the flexibility, the bending resistance, and the resilience, so that the function of the plate-shaped antenna 1 is improved.

Example 25. Another embodiment of the present invention will be described below with reference to the drawings. In FIGS. 27A and 27B, 1 is a plate-shaped antenna having a substantially U-shaped cross section, 30 is a substantially cylindrical sleeve formed on the upper outer periphery of the plate-shaped antenna 1, and 2 is a mobile phone. It is the body of the phone.

Since the sleeve 30 is formed on the upper periphery of the plate-shaped antenna 1 in the state where the plate-shaped antenna 1 is mounted on the mobile phone body 2, the plate-shaped antenna 1 having a substantially U-shaped appearance cannot be seen. It is possible to improve the drawability of the antenna.

Example 26. Another embodiment of the present invention will be described below with reference to the drawings. 28 (a) is a plate-shaped antenna, FIG. 28 (b) is an antenna section having a twist angle around the central axis in the longitudinal direction, and FIG. 28 (c) is an antenna section 16
The outer skin having a twist angle around the central axis in the lengthwise direction is also shown.

With the plate antenna 1 formed,
Since the antenna portion 16 and the outer skins 12 and 13 are configured to have a twist angle in the length direction, the plate antenna 1
In addition to improving the self-supporting property, the torsion angles and flexibility of the outer skins 12 and 13 and the antenna portion 16 are combined with the flexibility, the bending resistance, and the resilience to improve the function of the plate antenna 1.

Example 27. Hereinafter, another embodiment of the present invention will be described with reference to the drawings. 29 (a), (b)
Indicates an injection mold used when the outer covers 12 and 13 are integrated, and 43a is a mold having the shapes of the outer covers 12 and 13.

Positioning pins 41 and 42 for fixing the antenna portion 16 are provided in the mold 43a. Polypropylene resin, a thermoplastic resin; trade name MX3D (Mitsubishi Yuka Co., Ltd.), molding temperature 220 ° C, injection pressure 50MP
a, the injection time is 3 seconds, and the cooling time is 20 seconds. By injection molding, the primary molded product 12 in which the antenna portion 16 and the outer cover 12 are integrated is obtained.

Next, referring to FIG. 29b, this primary molded product 1
2 is a two-stage molding die 43 having a plate antenna 1 shape
The resin flows by being installed in b and injection-molded again, and the other outer skin 13 of the pre-molded outer skin 12
To form.

Next, polypropylene resin; MX3D was molded at a temperature of 220 ° C., injection pressure was 50 MPa, injection time was 3 seconds,
The plate-shaped antenna 1 is obtained by injection molding with a cooling time of 20 seconds.
Reference numeral 28 denotes a two-step molding die that sets the primary molded product 12 and then performs injection molding again to mold the entire plate-shaped antenna 1. Inside the mold 43b, the primary molded product 12 is fixed at a predetermined position. Positioning pins 41 and 42 are provided.

According to the same manufacturing method, polypropylene resin which is a thermoplastic resin; trade name MX3D and thermoplastic olefin elastomer resin; trade name Thermoran 3980B
Pellets blended with an extruder at a temperature of 210 ° C. at a weight ratio of 5: 5, and MX3D and a thermoplastic olefin elastomer resin; trade name Thermoran 215B at a temperature of 210 ° C. at a weight ratio of 3: 7. Molding using blended pellets is possible.

As described above, according to this embodiment, the step of forming the outer skins 12 and 13 in advance and the step of fusion-welding the outer skins 12 and 13 are performed together as compared with the first embodiment, so that the manufacturing process is shortened. be able to.

Example 28. Hereinafter, another embodiment of the present invention will be described with reference to the drawings. FIG. 30 (a),
In (b), (c), (d), (e), and (f), a transfer film 46 in which the strip conductor 14 is formed on a polyethylene terephthalate film having a thickness of about 50 μm has a length of 140 mm, a width of 6 mm, and a thickness of 6 mm. The thermoplastic elastomer resin; trade name Thermorun 215B (Mitsubishi Yuka Co., Ltd.) is installed in a mold 45 having one outer skin 12 shape of 0.8 mm, molding temperature 220 ° C., injection pressure 50 MPa, injection time 3 seconds. Injection molding is performed at a mold temperature of 40 ° C. and a cooling time of 20 seconds.

After molding, when the transfer film 46 is peeled off,
The conductor is transferred to the resin to obtain the primary molded product 44. Next, in order to mold the other outer skin 13, the transferred primary molded product 44 is 140 mm long, 6 mm wide, and 1.5 mm thick.
After being installed in the mold 48 having the shape of the plate antenna 1 of FIG.
℃, injection pressure 50MPa, injection time 3 seconds, mold temperature 40
The plate-shaped antenna 1 is obtained by injection molding at 20 ° C. for 20 seconds.

As described above, according to the present embodiment, it is not necessary to previously form the antenna portion 16 as compared with the first embodiment, and since the outer skins 12 and 13 can be formed at the same time, the manufacturing process is shortened. be able to.

Example 29. Hereinafter, another embodiment of the present invention will be described with reference to the drawings. FIG. 30 (a),
In (b), (c), (d), (e), and (f), a transfer film 46 having a strip conductor 14 formed on a polyethylene terephthalate film having a thickness of about 50 μm has a length of 140 mm, a width of 6 mm, and a thickness of 6 mm. It is installed in a mold 45 having one outer skin 12 shape of 0.8 mm in length and is a thermoplastic polystyrene resin; trade name Idemitsu styrene IT4
0 (Idemitsu Petrochemical Co., Ltd.) is press-molded at a molding temperature of 250 ° C. and a pressure of 30 MPa.

After molding, when the transfer film 46 is peeled off,
The conductor is transferred to the resin to obtain the primary molded product 44. Next, the other outer cover 13 is pre-molded with a polystyrene resin by press molding at a molding temperature of 200 ° C. and a pressure of 30 MPa with a length of 140 mm, a width of 6 mm, and a thickness of 0.8 mm.

The transferred primary molded product 44 and the premolded outer cover 13 are placed in a mold 45 having a shape of a plate antenna 1 having a length of 140 mm, a width of 6 mm and a thickness of 1.5 mm, and then molded. The plate-shaped antenna 1 is obtained by press molding at a temperature of 250 ° C. and a pressure of 30 MPa.

As described above, according to the present embodiment, it is not necessary to previously form the antenna portion 16 as compared with the first embodiment, and since the outer skins 12 and 13 can be formed at the same time, the manufacturing process is shortened. be able to.

Example 30. Hereinafter, another embodiment of the present invention will be described with reference to the drawings. FIG. 30 (a),
In (b), (c), (d), (e), and (f), a transfer film 46 having a strip conductor 14 formed on a polyethylene terephthalate film having a thickness of about 50 μm has a length of 140 mm, a width of 6 mm, and a thickness of 6 mm. It is installed in a mold 45 having one outer skin 12 shape of 0.8 mm in length, and an olefinic thermoplastic elastomer resin which is a thermoplastic resin; trade name Thermoran 215B (Mitsubishi Petrochemical Co., Ltd.) is used at a molding temperature of 20.
Press molding is performed at 0 ° C. and a pressure of 30 MPa.

After molding, when the transfer film 46 is peeled off,
The conductor is transferred to the resin to obtain the primary molded product 44. Next, the other outer skin 13 was formed into a length of 1 by using Thermorun 215B by injection molding at a molding temperature of 200 ° C., a pressure of 50 MPa, an injection time of 3 seconds, a mold temperature of 40 ° C., and a cooling time of 20 seconds.
It is pre-molded with a width of 40 mm, a width of 6 mm and a thickness of 0.8 mm.

The transferred primary molded product 44 and the premolded outer cover 13 are placed in a mold 45 having a shape of a plate antenna 1 having a length of 140 mm, a width of 6 mm and a thickness of 1.5 mm, and then molded. The plate-shaped antenna 1 is obtained by press molding at a temperature of 250 ° C. and a pressure of 30 MPa.

As described above, according to the present embodiment, it is not necessary to previously form the antenna portion 16 as compared with the first embodiment, and the outer skins 12 and 13 can be formed at the same time, which shortens the manufacturing process. be able to.

Example 31. An embodiment of the present invention will be described below. 31 and 32 show a method of forming the outer covers 12 and 13 of the antenna part 16, FIG. 31 shows a state in which the mold is opened, and FIG. 32 shows a state in which the mold is closed. Antenna part 1
Positioning holes are provided at both ends of the antenna portion 16 so that the plate 6 can be held on the neutral surface of the plate-shaped antenna 1, and the positioning pins 60 and the rack provided with the positioning holes in the mold 55 having the shape of the plate-shaped antenna 1. The positioning pin 61 provided at 57 is fitted. The positioning pin 60 of the mold 55 is a fixed positioning pin, and the positioning pin 61 of the rack 57 is a movable positioning pin in which the pinion gear 58 rotates when the mold 54 is opened and closed and the positioning pin slides.

The antenna section 16 is fixed to the positioning pin 60.
Then, the antenna 16 is held by sliding the movable positioning pin 61. When the antenna part 16 and the antenna part 16 are set in the mold, it is necessary to have the same pitch as the positioning holes of the antenna part 16 or a negative pitch in order to easily insert and fix the positioning pins 60 and 61 in that case. Talumi occurs in the portion 16. When the resin is poured, it is difficult to provide the talumi at the center in the thickness direction of the resin, and since the antenna part 16 is thermally expanded by heating the mold during molding,
If the pins are not slid, it is difficult to properly hold the center of the antenna part because the antenna part has a tarmi between the pins.
Tension is applied to 6. The tension is applied by using a structure in which the racks 56 and 57 and the pinion 58 are combined by using the opening and closing of the mold 54. Gate 59 of mold 54, 55
In a and 59b, the resin flow is 2
It must be provided in the central part in the thickness direction so as to be divided. The shapes of the gates 59a and 59b at this time are not a problem as long as they are shapes used for general resin molding such as side gates, film gates, fan gates, and the number of gates may be one-point gate or multi-point gate.

As described above, in this embodiment, the antenna section 16 is fixed to the neutral plane of the plate-shaped antenna 1 by holding the antenna section 16 on the neutral plane and then performing injection molding with a thermoplastic resin. A product with stable performance can be obtained.

Example 32. Another embodiment of the present invention will be described below with reference to FIGS. 33, 34, 35 and 36. FIG. 33 shows a mold used in this embodiment.
Shows an operation state diagram. In FIG. 33, 70 and 71 are molds, and 72a and 72b are fixed positioning pins to which the antenna unit 16 is fixed. Reference numeral 73 is a die compression device provided in the die 70, and 74 is a cylinder for moving the in-die compression device up and down. 75 is a slack prevention device that is provided on the molds 70 and 71 and prevents the antenna part 16 from slackening.
5 is a compression pin for moving up and down, and 78a and 78b are gates through which resin flows.

Next, the operation will be described. In FIG. 33, the antenna section 16 is fixed to the positioning pins 72a and 72b.
, And then mold closing as shown in FIG. 34,
The motor of 77 is rotated and operated by a compression pin of 76 so as to sandwich the antenna section 16 to hold the antenna section 16 so that there is no slack in the neutral plane, and then injection molding is performed with a thermoplastic resin. The gate 58 of the mold 70 must be provided in the central portion in the thickness direction so that the resin flow is divided into the front and back of the antenna section 16. There is no problem with the shape of the gate 58 at this time as long as it is a shape used for general resin molding such as a side gate, a film gate, a fan gate, and the number of gates may be one-point gate or multi-point gate. FIG. 34 shows a side gate.

The next operation will be described with reference to FIGS. As shown in FIG. 35, when injection molding is performed using a thermoplastic resin, the spring 79 acts so that the in-mold compression device 73 is pushed down by the pressure so as not to be pushed down rapidly. The action and effect of the spring 79 are provided in order to prevent the entrainment of air into the mold and the accumulation of resin. Next, as shown in FIG. 36, after injection molding is performed with a thermoplastic resin, the cylinder 74 is immediately operated to push back the in-mold compression device 73 and rotate the motor 77 to rotate the compression pin 76 to the antenna part. By releasing the state in which 16 is sandwiched, compression molding can be performed, and the antenna portion 16 is fixed to the neutral surface of the plate-shaped antenna 1.

As described above, in this embodiment, since the antenna portion 16 is fixed to the neutral plane of the plate-shaped antenna 1, a product with stable performance can be obtained.

Example 33. Another embodiment of the present invention will be described below with reference to FIGS. 37 (a) and 38 (b). FIG. 37
FIG. 37A is a partial sectional view of the present embodiment, and FIG. 37B is a partial plan view. In the figure, 11 is a dielectric substrate, 14 is a strip conductor, 15 is a ground side conductor, 14c,
14d is a contact A and a contact B provided on the strip conductor 14. Reference numeral 15a is a contact provided on the ground side conductor 15, reference numeral 80 is a contact jig that simultaneously heats and pressurizes the contact A14c, the contact B14d and the contact C15a and has a positioning function, and 81 is a solder wire. .

After the strip conductor 14 and the ground side conductor 15 are formed on the dielectric substrate 11, the contact A14c, the contact B14d, and the contact C15a are placed at predetermined positions using the contact jig 80. After that, the contact jig 80 contacts the contact A1.
4c, contact B14d, and contact C15a are simultaneously pressed and heated. Next, the solder wire 81 is connected to the contact A14c and the contact B14.
d, and the contact point C15a is supplied and fixed to obtain the antenna portion 16.

As described above, in this embodiment, the contact jig 80 is used to perform positioning, pressurization, and heating at the same time, and the contacts A14c, B14d, and C15a are fixed, so that the antenna portion 16 having high positional accuracy is obtained. Can be obtained.

[0139]

Since the present invention is constructed as described above, it has the following effects.

A plate-shaped antenna for a mobile phone according to the present invention comprises an antenna body and an outer skin containing the antenna body, and the antenna body comprises a dielectric substrate having flexibility, dielectric characteristics and a bonding hole. A strip conductor having a first contact formed on the first surface of the dielectric substrate and a ground-side conductor having a second contact formed on the second surface of the dielectric substrate. Has flexibility and dielectric characteristics with a contact hole into which the first contact and the second contact are inserted, and the inner wall on the strip conductor side and the inner wall on the ground side conductor side are mutually connected via the joint hole. Since they are fusion-bonded to each other, flexibility, bending resistance and restoration can be obtained.

Further, since the outer conductor has recesses similar to the shape of the strip conductor and the ground side conductor, and the strip conductor and the upper ground side conductor sink into these recesses, the joining property with the outer cover is improved. Is improved.

Further, since the strip conductor and the ground side conductor are made of a conductor obtained by plating an Ni-Ti alloy with copper, the flexibility, the bending resistance and the restoring property are further improved.

Further, since the above-mentioned antenna main body is bonded and constructed with the fluororesin prepreg, the dielectric characteristics can be prevented from being impaired.

Further, since the antenna body is coated with the silicon-based moistureproof agent, the weather resistance is improved.

Further, since the strip conductor and the insulating reinforcing sheet fixed to the surface of the ground side conductor are provided, the flexibility, the bending resistance and the restoring property are further improved.

Further, since the strip-shaped conductor and the linear elastic metal adhered to the surface of the ground-side conductor are provided, the flexibility, the bending resistance and the restoring property are further improved.

Further, since the strip-shaped conductor and the insulating reinforcing sheet fixed to the surface of the linear elastic metal fixed to the surface of the ground side conductor are provided, the flexibility, the bending resistance and the restoring property are improved. Further improve.

Further, a dielectric substrate having flexibility and dielectric characteristics, a flexible first insulation reinforcing sheet provided on the first surface side of the dielectric substrate, and the first dielectric reinforcing sheet. And a strip conductor having a first contact formed on the first surface side of the dielectric substrate of the insulation reinforcing sheet and having flexibility provided on the second surface side of the dielectric substrate. A second insulation reinforcing sheet, a ground side conductor having a second contact formed on the second surface side of the dielectric substrate of the second insulation reinforcing sheet, the dielectric substrate and the strip. A first insulating reinforcing sheet having a conductor formed thereon and a second conductor having a ground side formed thereon
Since it has a built-in insulation reinforcing sheet, and has a contact hole into which the first contact and the second contact are inserted, and an outer cover having flexibility and dielectric properties, it has flexibility and bending resistance. And the resilience can be obtained.

Since the strip conductor and the ground side conductor have recessed portions similar to the shape of the strip conductor and the ground side conductor, the strip conductor and the ground side conductor are sunk into these recesses, so that the outer skin is joined. The property is improved.

Further, since the outer cross section of the outer cover is curved to have a substantially U-shape, the flexibility, bending resistance and restoring property are further improved.

Further, since the antenna main body and the outer cover are curved to have a substantially U-shaped cross section, the flexibility, bending resistance and restoring property are further improved.

Further, since the tip of the outer cover is covered with the substantially circular sleeve, the appearance and the drawability of the antenna can be improved.

Further, since the antenna body and the outer cover are twisted around the central axis in the length direction at a predetermined angle, the flexibility, the bending resistance and the restoring property are further improved.

Further, a step of forming a strip conductor on the first surface of the dielectric substrate and a ground side conductor on the second surface,
A step of joining a first contact to the strip conductor and a second contact to the ground side conductor; and a step of forming an outer cover accommodating the dielectric substrate on which the strip conductor and the ground side conductor are formed into a first outer cover and a second outer cover. A step of forming each of the outer shells in a divided shape, the first outer shell and the second outer shell being fused together, and the first outer shell corresponding to the bonding hole provided in the dielectric substrate. Since the inner wall of the second outer cover is extruded into the joint hole and fusion-bonded,
It can be easily manufactured.

In addition, a step of forming a strip conductor on the film, a step of fusing a resin on the strip conductor of the film to transfer the strip conductor and forming a first outer cover, and a step of forming the film on the first conductor And a step of forming a second outer cover by fusing resin on the first outer cover and the strip conductor, so that the antenna portion is positioned with high accuracy and stable performance is obtained. can get.

In addition, in the step of forming the outer skin,
Since the outer cover is formed while applying tension to the antenna body in the mold, the antenna unit is positioned in the outer cover with high accuracy and stable performance is obtained.

In the step of forming the outer skin,
After forming the outline shape of the outer cover while applying tension to the antenna main body in the mold, since the outer cover is formed by compression molding, the antenna portion is positioned in the outer cover with high accuracy,
Stable performance can be obtained.

Further, in the step of joining the first contact to the strip conductor and the second contact to the ground side conductor, heating and pressurization are simultaneously performed for soldering, so positioning is performed with high precision and stability. The desired performance can be obtained.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a plate antenna for a mobile phone according to an embodiment of the present invention.

FIG. 2 is a perspective view of a plate antenna for a mobile phone according to an embodiment of the present invention.

FIG. 3 is a sectional view showing an embodiment of the present invention.

FIG. 4 is a diagram showing a manufacturing method according to an embodiment of the present invention.

FIG. 5 is a sectional view showing another embodiment of the present invention.

FIG. 6 is a sectional view showing another embodiment of the present invention.

FIG. 7 is a sectional view showing another embodiment of the present invention.

FIG. 8 is a sectional view showing another embodiment of the present invention.

FIG. 9 is a sectional view showing another embodiment of the present invention.

FIG. 10 is a perspective view showing another embodiment of the present invention.

FIG. 11 is a sectional view showing another embodiment of the present invention.

FIG. 12 is a sectional view showing another embodiment of the present invention.

FIG. 13 is a sectional view showing another embodiment of the present invention.

FIG. 14 is a sectional view showing another embodiment of the present invention.

FIG. 15 is a sectional view showing another embodiment of the present invention.

FIG. 16 is a sectional view showing another embodiment of the present invention.

FIG. 17 is a sectional view showing another embodiment of the present invention.

FIG. 18 is a sectional view showing another embodiment of the present invention.

FIG. 19 is a sectional view showing another embodiment of the present invention.

FIG. 20 is a sectional view showing another embodiment of the present invention.

FIG. 21 is a sectional view showing another embodiment of the present invention.

FIG. 22 is a sectional view showing another embodiment of the present invention.

FIG. 23 is a perspective view showing another embodiment of the present invention.

FIG. 24 is a sectional view showing one embodiment of claims 20 to 22 of the present invention.

FIG. 25 is a perspective view showing another embodiment of the present invention.

FIG. 26 is a sectional view showing another embodiment of the present invention.

FIG. 27 is a perspective view showing another embodiment of the present invention.

FIG. 28 is a perspective view showing another embodiment of the present invention.

FIG. 29 is a diagram showing a manufacturing method of another embodiment of the present invention.

FIG. 30 is a diagram showing a manufacturing method according to another embodiment of the present invention.

FIG. 31 is a diagram showing a manufacturing method according to another embodiment of the present invention.

FIG. 32 is a diagram showing a manufacturing method according to another embodiment of the present invention.

FIG. 33 is a diagram showing a manufacturing method according to another embodiment of the present invention.

FIG. 34 is a diagram showing a manufacturing method according to another embodiment of the present invention.

FIG. 35 is a diagram showing a manufacturing method according to another embodiment of the present invention.

FIG. 36 is a diagram showing a manufacturing method according to another embodiment of the present invention.

FIG. 37 is a diagram showing a manufacturing method according to another embodiment of the present invention.

FIG. 38 is a perspective view showing a conventional example.

FIG. 39 is a schematic view showing a conventional example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 plate antenna, 11 dielectric substrate, 11c outer skin joining hole, 12, 13 outer skin 12a, 12b, 12c contact hole A, contact hole B, contact hole C, 14 strip conductor, 1
4c, 14d, 15a contact A, contact B, contact C, 15
Ground side conductor, 16 antenna part, 17 fluororesin prepreg, 18 silicon moistureproof agent, 19 insulating reinforcing sheet, 20 elastic metal, 22 concave part, 30
Sleeve, 46 transfer film.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical indication location H04M 1/02 C (72) Inventor Yutaka Ishihara 8-1-1 Tsukaguchihonmachi, Amagasaki-shi Mitsubishi Electric Shares Company Communication Equipment Factory (72) Inventor Koji Hiroka 8-1-1 Tsukaguchi Honcho, Amagasaki City Mitsubishi Electric Corporation Communications Equipment Factory (72) Inventor Jun Takimoto 8-1-1 Tsukaguchi Honmachi, Amagasaki Mitsubishi Electric Communication Equipment Co., Ltd. (72) Inventor Kensuke Iwamoto 8-1-1 Tsukaguchi Honcho, Amagasaki City Mitsubishi Electric Corporation Communication Equipment Works (72) Inventor Osamu Murakami 8-1-1 Tsukaguchi Honcho, Amagasaki Mitsubishi Electric Device Co., Ltd. Material Device Research Center (72) Inventor Yasuo Furuhashi 8-1-1 Tsukaguchihonmachi, Amagasaki City Mitsubishi Electric Co., Ltd. Material Device Research Center

Claims (20)

[Claims] 1. A dielectric substrate having an antenna main body and an outer skin containing the antenna main body, the antenna main body having flexibility, dielectric characteristics, and a bonding hole; and a first surface of the dielectric substrate. A strip conductor having a first contact and a ground-side conductor having a second contact formed on the second surface of the dielectric substrate.
And a contact hole into which the second contact is inserted and has flexibility and dielectric characteristics, and the inner wall on the strip conductor side and the inner wall on the ground side conductor are fusion-bonded to each other through the joint hole. A plate-shaped antenna for mobile phones, characterized in that 2. The outer conductor has recesses similar in shape to the strip conductor and the ground-side conductor, and the strip conductor and the upper ground-side conductor sink into these recesses. The plate-shaped antenna for mobile phones according to 1. 3. The plate for a mobile phone according to claim 1 or 2, wherein the strip conductor and the ground side conductor are composed of a conductor obtained by plating an Ni-Ti alloy with copper. antenna. 4. The plate antenna for a mobile phone according to claim 1 or 2, wherein the antenna main body is bonded with a fluororesin prepreg. 5. The plate antenna for a mobile phone according to claim 1 or 2, wherein the antenna body is coated with a silicon-based moistureproofing agent. 6. The plate shape for a mobile phone according to claim 1, further comprising an insulating reinforcing sheet fixed to the surfaces of the strip conductor and the ground side conductor. antenna. 7. The plate antenna for a mobile phone according to claim 1, further comprising a linear elastic metal fixed to the surfaces of the strip conductor and the ground side conductor. 8. An insulating reinforcing sheet fixed to the surface of a linear elastic metal fixed to the surfaces of the strip conductor and the ground side conductor.
A plate-shaped antenna for a mobile phone as described above. 9. A dielectric substrate having flexibility and dielectric properties,
A flexible first insulation reinforcing sheet provided on the first surface side of the dielectric substrate and a first insulation reinforcing sheet of the first insulation reinforcing sheet on the first surface side of the dielectric substrate. A strip conductor having a first contact formed thereon, a flexible second insulating reinforcing sheet provided on the second surface side of the dielectric substrate, and a second insulating reinforcing sheet. Second of the above dielectric substrate
A ground-side conductor having a second contact formed on the surface side of the substrate, and the first dielectric substrate and the strip conductor.
Of the above-mentioned insulation reinforcing sheet and a ground-side conductor are formed and a second insulation reinforcing sheet is built in, and a contact hole into which the first contact and the second contact are inserted, and flexibility and dielectric characteristics. A plate-shaped antenna for a mobile phone, comprising: 10. The dielectric has recesses similar to the strip conductor and the ground-side conductor shape, and the strip conductor and the ground-side conductor sink into these recesses. Item 9. A plate-shaped antenna for mobile phones according to Item 9. 11. The plate antenna for a mobile phone according to claim 1, wherein the outer shape of the outer cover is curved to have a substantially U shape. 12. The antenna body and the outer cover are curved to have a substantially U-shaped cross section.
The plate-shaped antenna for mobile phones according to 1. 13. The plate-shaped antenna for a mobile phone according to claim 1, wherein a tip of the outer cover is covered with a substantially circular sleeve. 14. The plate antenna for a mobile phone according to claim 1, wherein the antenna main body and the outer cover are twisted at a predetermined angle around a central axis in the length direction. 15. A step of forming a strip conductor on a first surface and a ground side conductor on a second surface of a dielectric substrate, and a step of forming a first contact on the strip conductor and a second contact on the ground side conductor. A step of joining, a step of forming an outer cover accommodating the dielectric substrate on which the strip conductor and the ground-side conductor are formed into a first outer cover and a second outer cover, and the first outer cover And the second outer skin are fused together, and the inner walls of the first outer skin and the second outer skin corresponding to the joining holes provided in the dielectric substrate are extruded into the joining holes to perform the fusion joining. A method of manufacturing a plate-shaped antenna for a mobile phone, comprising the steps of: 16. A step of forming a strip conductor on a first surface and a ground side conductor on a second surface of a dielectric substrate, and a step of forming a first contact on the strip conductor and a second contact on the ground side conductor. A step of joining, a step of forming a first outer cover of a shape obtained by dividing an outer cover accommodating the dielectric substrate on which the strip conductor and the ground-side conductor are formed into a first outer cover and a second outer cover, The second outer cover is formed and fused with the first outer cover, and the inner walls of the first outer cover and the second outer cover corresponding to the joint holes formed in the dielectric substrate are extruded into the joint holes. , A process of fusion bonding,
A method for manufacturing a plate-shaped antenna for a mobile phone, comprising: 17. A step of forming a strip conductor on a film; a step of transferring a resin onto the strip conductor of the film to transfer the strip conductor and forming a first outer cover; And a step of forming a second outer cover by fusion-bonding a resin on the first outer cover and the strip conductor, thereby forming a second outer cover of the cellular phone. . 18. The method for manufacturing a plate antenna for a mobile phone according to claim 15, wherein, in the step of forming the outer cover, the outer cover is formed while tension is applied to the antenna main body in a mold. 19. The step of forming the outer cover, wherein the outer cover is formed by compression molding after forming a general shape of the outer cover while applying tension to the antenna main body in a mold. A method for manufacturing a plate-shaped antenna for a mobile phone as described above. 20. In the step of joining a first contact to the strip conductor and a second contact to the ground side conductor,
The method for manufacturing a plate antenna for a mobile phone according to claim 15, wherein heating and pressing are performed at the same time for soldering.