JP3264864B2 - Antenna device for mobile communication equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antenna device for a mobile communication device such as a portable telephone or a portable radio, and more particularly, to a mounting structure of an antenna element.

[0002]

2. Description of the Related Art As is well known, a mobile communication device such as a mobile phone or a portable wireless device is equipped with a transmitting / receiving antenna. The transmission / reception antenna can be stored and pulled out of the communication device main body, and is used by being pulled out from the mobile communication device main body during a call. Such an antenna needs to be connected to a transmission / reception signal transmission circuit, and therefore, the terminal is connected to an RF circuit provided in the mobile communication device.

[0003] As one of the power supply structures for signal transmission to an antenna, a lead wire from an RF circuit is connected to a support portion of an antenna element, and a sliding position of the antenna element, that is, any of a drawing position and a storing position. Also, there is a configuration in which the conductive portion of the support portion to which the lead wire is connected is in contact with the conductive portion of the antenna element. On the other hand, the support portion of this type of antenna maintains the posture in each state for the purpose of maintaining the pulled out state and the state of not protruding unnecessarily when stored. For this reason, a structure that generates frictional resistance by pressing against the antenna element is often adopted, and the power supply structure uses such a portion that comes into frictional contact with the antenna element as a conductive path.

Further, it is necessary to prevent an increase in contact resistance due to an increase in the number of contact points in the above-described power supply structure. So, the applicant first
According to the specification of Japanese Patent Application No. 8-117883, an antenna device capable of reducing contact resistance has been proposed. FIG. 6 is a diagram showing a schematic configuration thereof. In the figure, an antenna device 1 supports an antenna element 3 that can be pulled out and stored in a mobile communication device main body 2 and the antenna element 3 is slidably supported. The main body includes an attachment member 4, a power supply member 5, and a holding member 6. The power supply member 5 and the holding member 6 are formed integrally with the attachment member 4 and are formed of an elastic body having a terminal lug R that can be integrated with the power supply unit disposed in the mobile communication device main body 2. 5 can enter a window 4A formed in the mounting member 4 and come into contact with a conductive portion (not shown) of the antenna element 3. In this case, the conductive portion of the antenna element 3 corresponds to a sleeve member 7 and a stopper member (not shown) provided at both ends in the extension direction of the antenna element 3. The holding member 6 applies a holding pressure to the outer peripheral surface of the mounting member 4 to hold the antenna element 3 pulled out from the mobile communication device main body 2 in that state. In such an antenna device 1, after the mounting member 4 is inserted into a screw hole (indicated by reference numeral 2A for convenience) formed in the mobile communication device main body 2, the mounting screw portion 4 </ b> B of the mounting member 4 is By fastening to 2A, the mobile communication device main body 2 can be attached.

In the above-described configuration, the contact point between the power supply path from the mobile communication device main body 2 side and the conductive portion on the antenna element 3 side is one in each of the case where the antenna element 3 is pulled out and the case where the antenna element 3 is stored. It is done. That is, when the antenna element 3 is pulled out, the stopper member (not shown) of the antenna element 3 comes into contact with the feeding member 5, and when the antenna element 3 is retracted, the sleeve 7 of the antenna element 3 and the conductive member 5 It only needs to contact with. Thereby, the number of contact points is reduced, and the contact resistance can be extremely reduced.

[0006]

However, the antenna device shown in FIG. 6 has the following problems. In other words, the figure
As shown in FIG. 7 , when the mounting member 4 is to be inserted into the mobile communication device main body 2, the terminal lug R provided integrally with the conductive member 5 and the holding member 6 interferes with the screw hole 2A,
Smooth insertion and fastening cannot be performed. For this reason, when inserting the mounting member 4 into the screw hole 2A,
A terminal lug R is bent so that it can be inserted through
After the connection, the terminal lug R is required to be returned to its original shape so as to face the power supply unit in the mobile communication device main body 2 and electrically connected to the power supply unit. On the other hand, the terminal lug R integrated with the power supply member 5 and the holding member 6 is attached to the mounting member 4.
Rotates with the fastening of. Therefore, when the mounting member 4 is screwed until the flange 4C formed on the mounting member 4 and the surface of the mobile communication device main body 2 are in close contact with each other, the terminal lug R and the power supply portion in the mobile communication device main body 2 are May shift, and it may not be possible to secure a power supply path.

SUMMARY OF THE INVENTION In view of the above-mentioned problems in the conventional antenna apparatus for mobile communication equipment, an object of the present invention is to provide a mobile communication equipment which can easily assemble an antenna element and can secure a feed path for the antenna element after being assembled. To provide an antenna device for a vehicle.

[0008]

In order to achieve this object, an invention according to claim 1 is an antenna device attached to a mobile communication device, wherein the antenna device is pulled out from a main body of the mobile communication device. Select an antenna element for which one of the states stored in the main body of the mobile communication device is selected.
Attach to the mounting part formed on the main body side of the mobile communication device
A mounting member for mounting, and an outer periphery of the mounting member for support.
And Nyo, is maintained and the power feeding member capable of contacting the conductive portion of the antenna element enters therein, the feeding member and the electrical conductive state, above the outer periphery of the supporting mounting member
Serial and a holding member capable of maintaining extended state of the antenna element, the feed member and the holding member, the
It is shaped to be insertable into the mounting portion of the mobile communication device, and by attaching the supporting mounting member to the mounting portion, at least the holding member is held and positioned by the power supply portion arranged in the mobile communication device main body. Is performed.

According to a second aspect of the present invention, in the antenna device for a mobile communication device according to the first aspect, the power supply member and the holding member are constituted by an elastic member integrally formed with the support mounting member. Attach the support mounting member
By fastened to attachment portions are characterized and this <br/> of contact power feeding part of the mobile communication device main body to any position in the outer circumferential direction.

According to a third aspect of the present invention, there is provided an antenna device attached to the mobile communication device, wherein the antenna device is pulled out of the main body of the mobile communication device or stored in the main body of the mobile communication device. A mounting part formed on the main body side of the mobile communication device with the antenna element to be selected
A mounting member to be mounted on the outer periphery of the mounting member
A power supply member that can enter the inside of the antenna element and abut on the conductive portion of the antenna element, is maintained in an electrically conductive state with the power supply member, and can maintain a state in which the antenna element is pulled out from the outer periphery of the mounting member. Bei and a holding member
For example, the mounting member is maintained electrically conductive state and the power feeding member and the holding member, are integrated with the respective members slidably supports the antenna element, forming an electrode of the mobile communication device main body It is characterized in that it is fixed by being fastened to a mounting portion to be connected and is electrically connected to the mounting portion.

[0011]

According to the first aspect of the present invention, the power supply member and the holding portion are provided.
Surrounds the outer periphery of the mounting element for supporting the antenna element
And only the power supply member enters the support mounting member.
To ensure continuity with the antenna element
Therefore, reduce the number of contact points with the antenna element
The contact resistance can be reduced, and the power supply member and the holding member surround the outer periphery of the support attachment member of the antenna element, and further have a shape that can be inserted into the attachment portion formed on the mobile communication device main body. Therefore, a part of the power supply member and the holding member can be inserted without interfering with the mounting portion. Also, the antenna element
Mounting support for the mobile communication device
By attaching it, the holding member can be instantly
Positioning is performed by being held by the power supply section on the main unit, and the antenna is
The electrical connection between the mobile device side and the mobile communication device body side is made.
You.

According to the second aspect of the present invention, when the attachment member is fastened to the mobile communication device main body, the power supply portion of the mobile communication device main body can be brought into contact with an arbitrary position of the power supply member and the holding member. Even when the power supply member and the holding member rotate due to the fastening of the mounting member, the contact relationship between the power supply unit on the mobile communication device main body side and the power supply member and the holding member can be maintained regardless of the rotational position.

According to the third aspect of the present invention, the mounting member, which is maintained in an electrically conductive state with the power supply member and the holding member, is fastened to the mounting portion formed in the mobile communication device main body in the process of being fastened to the mounting member. The part is always kept in contact. As a result, since the mounting portion is an electrode portion,
Regardless of the amount of rotation at the time of fastening of the mounting member, a power supply path from the electrode portion of the mounting portion to the antenna element via the power supply member and the holding member is secured.

[0014]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. In the drawings after FIG. 1, the same components as those shown in FIG. 6 are denoted by the same reference numerals. FIG. 1 is a cross-sectional view showing a main part of an antenna device for a mobile communication device according to an embodiment of the present invention, that is, a mounting structure, and the antenna device 1 for a mobile communication device shown in FIG. , Used in mobile phones and portable wireless devices. In FIG. 1, an antenna device for mobile communication equipment (for convenience, reference numeral 1 ′
The mounting member 4 that slidably supports the antenna element 3 is fastened to the mounting screw portion 4B in a screw hole 2A that is an antenna element mounting portion formed in the mobile communication device main body 2. It can be attached.

On the other hand, similarly to the configuration shown in FIG. 6 , the power supply member 6 'and the holding member 7' integrated on the outer periphery of the mounting member 4 are made of an integrally formed elastic body such as phosphor bronze. , Is maintained in an electrically conductive state. The power supply member 6 ′ and the holding member 7 ′ surround the outer peripheral surface of the attachment member 4 and have an outer diameter that can be inserted into the screw hole 2 </ b> A of the mobile communication device main body 2. The power supply member 6 ′ and the holding member 7 ′ are integrated by being subjected to insert processing in a molding die when the mounting member 4 is molded.

As shown in FIG. 2, in the mobile communication device main body 2, an electrode portion 2B serving as a power supply portion is disposed at a position corresponding to the holding member 7 'when the fastening of the mounting member 4 is completed. The electrode portion 2B is formed of a cylindrical member having an inner diameter to which the holding member 7 'can be fitted, and is capable of abutting, preferably pressing, on the outer periphery of the holding member 7'. In addition,
As shown in FIG. 3, the electrode portion 2B is an elastic piece (indicated by a reference numeral 2B1 for convenience) having a convex portion bulging toward the outer peripheral surface of the holding member 7 'at the tip instead of the cylindrical member described above.
May be arranged in parallel along the circumferential direction of the holding member 7 '.

Since the present embodiment has the above configuration,
After the antenna element 3 is inserted into the mounting member 4 and slidably supported, the mounting member 4 is mounted on the mobile communication device main body 2. The mounting member 4 is inserted into the screw hole 2A of the mobile communication device main body 2 until the mounting screw portion 4B faces the screw hole 2A. At this time, the outer periphery of the mounting member 4 interferes with the screw hole 2A. Since the member does not exist,
As shown by the arrow in FIG. 1, it can be smoothly inserted, and the mounting screw portion 4B can be fastened to the screw hole 2A.

On the other hand, when the mounting screw 4B is fastened to the screw hole 2A of the mobile communication device main body 2 and the flange 4C abuts on the top plate of the mobile communication device main body 2, the fastening of the mounting member 4 is completed. Become. After the fastening is completed, as shown in FIG. 2, the holding member 7 'located on the outer periphery of the mounting member 4 is fitted into the electrode portion 2B arranged in the mobile communication device main body 2, and the contact piece of the electrode portion 2B is fitted. Is pressed. Thus, a power supply path for the antenna element 3 is formed via the electrode portion 2B, the holding member 7 ', and the power supply member 6' integrated therewith. In addition, also in the configuration shown in FIG. 3, when the fastening of the attachment member 4 is completed, the elastic piece B1 is pressed against the outer peripheral surface of the holding member 7 'to form a feed path for the antenna element 3 in the same manner as described above. can do.

According to the present embodiment, a simple structure for simply specifying the shapes of the power supply member 6 'and the holding member 7' integrated with the outer periphery of the mounting member is different from the conventional one shown in FIG. In contrast, when attaching the antenna element 3 to the mobile communication device main body 2, there is no need to deform the power supply member 6 ′ or the holding member 7 ′, so that the operation of attaching the antenna element 3 is simplified. Moreover, the mounting member 4
Is made of molded resin, it is possible to reduce the weight of parts used for mounting the antenna element 3.

Next, the invention according to claim 3 will be described. FIG. 4 is a sectional view corresponding to FIG. 1 for explaining a main part of the antenna device for a mobile communication device according to the third aspect of the invention, that is, an attachment structure. In FIG. 4, the invention according to claim 3 is characterized in that the mounting portion of the antenna element itself is used as a power supply electrode portion. That is, the mounting member (indicated by reference numeral 40 for convenience) has the same shape and structure as the configuration shown in FIG. 1, and is provided with the mounting screw portion 40B and the flange portion 40C. Mounting screw 40B
1 is fastened to a screw hole (indicated by reference numeral 2A 'for convenience) of the mobile communication device main body 2 when the mounting member 40 is mounted, similarly to the configuration shown in FIG. On the other hand, a screw hole 2A 'forming a mounting portion of the antenna element 3 in the mobile communication device body 2
Is formed on the inner surface of a nutsert 20 made of a conductive material, which is different from the material of the mobile communication device main body 2, and is connected to a wiring forming a part of a power supply circuit (not shown).

The mounting member 40 fastened to the screw hole 2A 'formed in the nut sert 20 has a mounting screw portion 40.
The surface in contact with B and the holding member (indicated by reference numeral 70 for convenience) is plated with resin. In addition,
In the structure shown in FIG. 4, the surface of the flange portion 40C of the mounting member 4 is also plated, so that when the flange portion 40A comes into contact with the end face of the screw hole 2A ', the flange is formed. The unit 40A is also used as a part of the power supply path.

Since the present embodiment has the above configuration,
The antenna element 3 is attached to the mobile communication device main body 2 by fastening the mounting member 40 to the screw hole 2A 'in the nut sert 20, which is an attachment portion of the mobile communication device main body 2. Since the screw hole 2A 'and the mounting screw portion 40B of the mounting member 40 are always in contact with each other in the process of fastening the mounting member 4 to the screw hole 2A', the screw portion 2
A ′, a power supply path for the holding member 70 is formed through the surface of the screw portion 40B and the surface of the mounting member 40, and between the power supply member (indicated by reference numeral 60 for convenience) and the antenna element 3 integrated with the holding member 70. Is formed.

According to this embodiment, by using the screw hole 2A 'of the mobile communication device main body 2 as a power supply electrode portion,
Unlike the embodiment shown in FIG. 1, there is no need to provide a special electrode portion in the mobile communication device main body 2, so that the structure of the power supply path can be simplified. Moreover, regardless of the amount of rotation of the mounting member 40, the screw hole 2A 'and the mounting screw portion 40B are kept in contact, so that there is no disconnection of the power supply path.

In the embodiment shown in FIG. 4, the surface of the mounting member 40 formed by molding is plated with resin, but the present invention is not limited to such a configuration. In other words, for example, the mounting member itself can be made of a cut product of a metal such as brass or aluminum, or can be made of a die-cast product using aluminum, magnesium, or the like, or can be made of a conductive resin. is there. Further, instead of conducting the entire mounting member, the portion other than the flange portion 40C may be subjected to the conductive process. In this case, since the flange portion 40A exposed on the surface of the mobile communication device main body 2 is not subjected to the conductive treatment, the generation of static electricity due to the dielectric action generated at that portion is suppressed, and the electrostatic breakdown voltage is increased. Can be. Furthermore, it is also possible to match the decoration of the mobile communication device main body 2 by distinguishing the flange portion 40A from other portions as a decorative portion.

Further, as a modified example of the nutsert for fastening the resin-plated mounting member 40,
The configuration shown in FIG. 5 is also possible. In FIG. 5, the nut-sert 20 has a ring-shaped ring-shaped electrode portion 2 that is continuous with the screw portion 2A on the side located inside the mobile communication device main body.
0A is formed. On the other hand, around the annular electrode portion 20A, an electrode portion in the mobile communication device main body (for convenience, FIG.
(Indicated by the reference numeral 2 attached to the elastic piece of the electrode 2B). According to such a configuration, unlike the configuration shown in FIG. 4, wiring processing such as connection of a lead wire to the nutsert 20 becomes unnecessary, and power is supplied from the elastic piece 2B1 to the mounting member 40 via the nutsert 20. A road is formed,
Further, the holding member 7 in contact with the surface of the mounting member 40
A power supply path for the antenna element 3 can be configured via the power supply member 60 and the power supply member 60. Moreover, the elastic piece 2B1 is
Since the contact can be made with respect to the annular electrode portion 20A having a wider effective contact area than the holding member 70, the holding member 7
It is not necessary to make the positioning accuracy higher than the positioning accuracy for zero. Therefore, it is possible to suppress an increase in processing cost due to an improvement in processing accuracy.

[0026]

As described above, according to the first aspect of the present invention, the power supply member and the holding member surround the outer periphery of the support mounting member for the antenna element and are formed on the mobile communication device main body. Since the shape is such that it can be inserted into the mounting portion, the power supply member and a part of the holding member can be inserted without interfering with the mounting portion. Thus, the antenna element can be easily assembled by eliminating troubles such as interference prevention when inserting the power supply member and the holding member into the mounting portion of the mobile communication device.

According to the second aspect of the present invention, when the attachment member is fastened to the mobile communication device main body, the power supply portion on the mobile communication device main body side can be brought into contact with an arbitrary position of the power supply member and the holding member. Therefore, even when the power supply member and the holding member rotate due to the fastening of the mounting member, the contact relationship between the power supply unit on the mobile communication device main body side and the power supply member and the holding member can be maintained regardless of the rotational position. This makes it possible to prevent a situation in which a feed path cannot be formed after the antenna element is attached.

According to the third aspect of the present invention, the mounting member, which is maintained in an electrically conductive state with the power supply member and the holding member, is fastened to the mounting portion formed in the mobile communication device main body. And the mounting portion are always kept in contact with each other. In this way, the mounting portion, which is a portion where the contact relationship is inevitably set at the time of mounting, is used as the power supply electrode portion, so that the fastening rotation of the mounting member can be performed with a simple structure using only the existing mounting structure. Regardless of the amount, it is possible to always form the feed path for the antenna element.

[Brief description of the drawings]

FIG. 1 is a local sectional view showing a main part of an antenna device for a mobile communication device for explaining an embodiment of the invention described in claims 1 and 2;

FIG. 2 is a local sectional view for explaining a power supply structure in a main part shown in FIG. 1;

FIG. 3 is a local cross-sectional view for explaining a modification of the power supply structure shown in FIG. 2;

FIG. 4 is a sectional view corresponding to FIG. 1 and showing a main part of an antenna device for a mobile communication device for explaining an embodiment of the invention described in claim 3;

FIG. 5 is a sectional view corresponding to FIG. 4, showing a modification of the main structure shown in FIG. 4;

FIG. 6 is an overall configuration diagram for explaining a conventional example of a mobile communication device antenna device.

FIG. 7 is a local sectional view showing a main part structure in the conventional example shown in FIG. 6;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Antenna device for mobile communication devices 2 Mobile communication device main body 2A, 2A 'Screw hole corresponding to the mounting portion of the device main body 2B Power supply electrode portion 3 Antenna element 4 Mounting member 4B Mounting screw portion 4C Flange 6, 60 Power supply member 7 , 70 Holding member 20 Nut sert forming an attachment portion having a screw hole

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-9-130118 (JP, A) JP-A-3-245603 (JP, A) JP-A-10-209730 (JP, A) JP-A 8- 18316 (JP, A) JP-A-9-98008 (JP, A) JP-A-8-213828 (JP, A) JP-A-9-307325 (JP, A) JP-A-63-173934 (JP, U) (58) Field surveyed (Int.Cl. ⁷ , DB name) H01Q 1/10-1/50

Claims (3)

(57) [Claims] 1. An antenna device attached to a mobile communication device, wherein the antenna device selects one of a state of being pulled out from the main body of the mobile communication device and a state stored in the main body of the mobile communication device. Element on the main body side of the mobile communication device
A supporting mounting member to be mounted on the formed mounting portion, and a periphery of the supporting mounting member,
Nde said antenna and capable of abutting the feed member to the conductive portion of the element is maintained electrically conductive state and the power supply member, the supporting
A holding member capable of maintaining a state in which the antenna element is pulled out from an outer periphery of the mounting member, wherein the power supply member and the holding member are provided in the mobile communication device.
By attaching the supporting mounting member to the mounting portion, at least the holding member is held by a power supply portion arranged in the mobile communication device main body, and positioning is performed. An antenna device for a mobile communication device. 2. The antenna device for a mobile communication device according to claim 1, wherein the power supply member and the holding member are formed of an elastic member integrally formed with the support mounting member. An antenna device for a mobile communication device, wherein the power supply portion in the mobile communication device main body contacts an arbitrary position in an outer peripheral direction thereof by being fastened to the mounting portion. 3. An antenna device attached to a mobile communication device, wherein the antenna device selects one of a state of being pulled out from a main body of the mobile communication device and a state stored in the main body of the mobile communication device. Element on the main body side of the mobile communication device
A mounting member to be mounted on the formed mounting portion, and an outer periphery of the mounting member,
Serial and can contact the power supply member to the conductive portion of the antenna element is maintained electrically conductive state and the power supply member, the mounting portion
A holding member capable of maintaining a state in which the antenna element is pulled out from the outer periphery of the member , wherein the mounting member is maintained in an electrically conductive state with the power supply member and the holding member, and is integrated with each of the members to form the antenna. slidably supporting the element is fixed by being fastened to the attachment portion to form an electrode of the mobile communication device main body, and characterized in that it is electrically connected to the attachment portion moves Antenna device for communication equipment.