JP3198310U - Counterpoise connection adapter - Google Patents

Abstract

Provided is a counterpoise connection adapter that can be detachably attached to a portable communication device. A counterpoise having an engaging portion at one end provided between a plug seat for an aerial wire of a portable communication device main body and a plug detachable from the plug seat provided on the antenna wire is connected. As the counterpoise connection adapter, the counterpoise provided between the plug Xa that can be attached to and detached from the plug seat, the plug seat Xb that can be attached to and detached from the plug, the plug, and the plug seat A counterpoise holding portion Xc having an engaged portion 41 that engages with the engaging portion of the mobile phone, and is configured to electrically connect the antenna line to be connected and the counterpoise to the main body of the portable communication device. [Selection] Figure 2

Description

  The present invention relates to an adapter for connecting a counterpoise to a portable communication device.

In a portable communication device, a current-fed antenna that is often used in the VHF band or the like generally has a structure in which an antenna is directly attached to the main body of the communication device. The antenna, the main body of the communication device (including the human body when held by hand) Together, it forms an aerial line. However, as the size of portable communication devices is reduced, grounding capacity is often insufficient, and the original performance of antennas is often not obtained.

Along with the miniaturization of such portable communication devices, as a method for dealing with the problem that the performance of the antenna main body cannot be fully utilized, it is conceivable to install a counterpoise often used for a fixed antenna or the like. However, the counterpoise is generally a long linear body, and the portability of the portable communication device is impaired. Therefore, the counterpoise has not been provided in the portable communication device. On the other hand, the counterpoise can be easily carried when wrapped, so if it can be attached to and detached from the portable communication device as needed, it will be possible to use the counterpoise as needed without compromising portability. Conceivable.
In view of the above, an object of the present invention is to provide an adapter capable of providing a counterpoise so as to be detachable from a portable communication device.

In order to solve the above problems, the present invention has the following configuration.
According to the first aspect of the present invention, an engagement portion is provided at one end provided between the abutment seat for the aerial wire of the portable communication device body and the abutment detachable from the abutment seat provided on the aerial wire. A counterpoise connection adapter for connecting a counterpoise having a plug that can be attached to and detached from the plug seat, a plug seat that can be attached to and detached from the plug, the plug, and the plug seat A counterpoise holding portion having an engaged portion that engages with an engaging portion of the counterpoise provided, and electrically connecting the antenna line to be connected and the counterpoise to the portable communication device main body. Is.
According to a second aspect of the present invention, in the counterpoise connection adapter, the counterpoise holding portion is fixed so as to be rotatable with respect to a central axis along a connection direction of the antenna plug.
According to a third aspect of the present invention, in the counterpoise connection adapter, the counterpoise holding portion directs the engaged portion in a different rotation direction with respect to a central axis along a connecting direction of the antenna plug. Two or more are provided.

With the configuration as described above, the present invention has the following effects.
According to the first aspect of the present invention, since many portable communication devices are formed so that the communication device main body and the antenna can be attached and detached with a plug seat and a plug, the counterpoise connection adapter is fixed later. This makes it possible to connect and use a counterpoise having a predetermined engaging portion when necessary. In addition, counterpoise reduces the high-frequency current received and transmitted by portable communication devices from flowing into the human body, reducing the impact on the human body, and reducing the influence of the human body on the antenna. Performance can be improved. In addition, portability can be maintained by removing the counterpoise and rounding it down during transport.
According to the second aspect of the present invention, the counterpoise can be positioned at the best position by adjusting the rotation angle with the direction of the antenna line of the counterpoise as the central axis.
According to the third aspect of the present invention, the counterpoise can be positioned at a better position by selecting the mounting direction with respect to the rotational direction centered on the direction of the antenna. Moreover, if a plurality of counterpoises are provided, it can contribute to further improvement of the performance of the antenna system.

It is a perspective view which shows the counterpoise connection adapter which concerns on embodiment. It is a longitudinal cross-sectional view of the counterpoise connection adapter which concerns on embodiment. It is a disassembled perspective view which shows the state which fixes the counterpoise connection adapter which concerns on embodiment to a portable communication apparatus. It is a perspective view which shows the state which fixed the counterpoise connection adapter which concerns on embodiment to the portable communication apparatus. It is a perspective view which shows the counterpoise connection adapter which concerns on a modification. It is a perspective view which shows the state which fixed the counterpoise connection adapter showing the modification of the antenna of a portable communication apparatus to the portable communication apparatus.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a perspective view of a counterpoise connection adapter X according to the present embodiment, and FIG. 2 is a longitudinal sectional view of the counterpoise connection adapter X. The counterpoise connection adapter X includes a lower nut member 10, an upper nut member 20, a core member 30, and a ring member 40.
The lower nut member 10 is a conductive cylindrical body having a female screw 11 penetrating the central axis. The female screw 11 has a diameter that engages with a male screw formed on the outer periphery of a plug seat for mounting the antenna of the portable communication device to be mounted. Further, a small diameter portion 12 having an outer diameter smaller than that of the lower end side is formed on the outer periphery of the lower nut member 10 in a certain range on the upper end side.
The upper nut member 20 is an electrically conductive flat cylindrical body in which a female screw 21 having the same diameter as the female screw 11 of the lower nut member 10 passing through the central axis is formed. The outer circumference of the lower end side fixed range of the upper nut member 20 is formed with a small diameter portion 22 having the same outer diameter as the small diameter portion 12 of the lower nut member 10 and having a smaller outer diameter than the upper end side.

The core member 30 has a shape in which a non-conductive cylinder 33 is fitted in a conductive cylinder 31 and a conductive rod 34 is fitted in a central hole of the cylinder 33. On the outer periphery of the cylindrical body 31 constituting the outermost periphery, a male screw 31 a that engages with the female screw 11 of the lower nut member 10 and the female screw 21 of the upper nut member 20 is formed. The diameter of the male screw 31a matches the male screw formed on the outer periphery of the tangent seat to which the antenna of the portable communication device to be attached is attached. A flange-like protrusion 31 b protrudes at a predetermined position of the cylindrical body 31. The upper end of the rod body 34 is formed with a hole 34a into which the needle body protruding in the center of the plug of the antenna line to be attached is fitted, and the needle body 34b having the same shape as the needle body protruding in the center of the hook of the antenna line is formed at the lower end. Has been.
The ring member 40 is a conductive disk-like body, and a hole 42 that substantially matches the outer diameter of the small diameter portion 12 of the lower nut member 10 and the small diameter portion 22 of the upper nut member 20 is formed at the center. On the side surface of the ring member 40, a counterpoise engaged portion 41 made of a female screw that engages with a male screw constituting a counterpoise engaging portion described later is formed. The ring member 40 constitutes a counterpoise holding part Xc.

  The counterpoise connection adapter X is formed by assembling the above components. First, the male screw 11a on the lower end outer periphery of the core member 30 is attached to the female screw 11 of the lower nut member 10 from above, and the female screw 11 having the same height as the height of the abutment seat for the antenna of the portable communication device to be mounted remains. Engage. As a result, a plug Xa that can be engaged with a plug socket for an antenna of a portable communication device to be mounted is formed at the lower end of the counterpoise connection adapter X. Next, the hole 42 of the ring member 40 is inserted into the small diameter portion 12 of the lower nut member 10 with the conductive corrugated washer 13 interposed therebetween, and the conductive corrugated washer 23 is placed thereon, and the upper nut is placed from above. The female screw 21 of the member 20 is engaged with the male screw 31 a of the core member 30 so that the small diameter portion 22 of the upper nut member 20 is fitted into the hole 42 of the ring member 40. In this state, the ring member 40 is rotatably fixed between the lower nut member 10 and the upper nut member 20 via the corrugated washers 13 and 23. The protrusion 31b of the core member 30 is sandwiched between the lower nut member 10 and the upper nut member 20, and the ring member 40 can maintain contact with the corrugated washers 13 and 23 even if it rotates. It is possible to maintain a state in which the cylindrical member 31 of the core member 30 is always electrically connected via the lower nut member 10 and the upper nut member 20 that are in contact with the mold washers 13 and 23. In this state, the portion of the core member 30 that protrudes from the upper surface of the upper nut member 20 is set to have the same height as the female screw that constitutes the plug of the antenna wire to be attached. As a result, a plug seat Xb that can be engaged with the plug of the antenna to be mounted is formed at the upper end of the counterpoise connection adapter X.

Next, a method of using the counterpoise connection adapter X having the above configuration will be described. In use, first, the aerial wire is removed from the portable communication device to be mounted, and the lower nut member 10 of the counterpoise connection adapter X is attached to the plug seat Tc of the portable communication device T as shown in the exploded perspective view of FIG. The male screw 31a of the core member 30 of the counterpoise connection adapter X is engaged with the plug Ac of the antenna A. The antenna A is a general current supply type antenna for a portable communication device. Then, the counterpoise C is attached to the counterpoise engaged portion 41 of the ring member 40. The counterpoise C is a flexible stainless steel wire having a length of ¼ of the wavelength, and an engagement portion Cc made of a male screw that engages the counterpoise engaged portion 41 having conductivity is provided on one end side. ing. The counterpoise C is fixed to the counterpoise connection adapter X by engaging the engaging portion Cc with the counterpoise engaged portion 41. When the counterpoise C is connected, the state shown in the perspective view of FIG. 4 is obtained. In this state, the antenna A and the portable communication device T can secure the same connection state as the state where they are directly connected to each other, and the counterpoise C is also electrically connected to the portable communication device T. The counterpoise C hangs downward as shown in the figure, so that it does not get in the way when used. In this state, by rotating the ring member 40, it is possible to search for a rotational position where the reception sensitivity is the best. Also, when you do not use the countpoise C, such as when you move it, remove only the counterpoise C from the state shown in Fig. 4 and roll the counterpoise C up and down to carry it, and use it whenever necessary. It becomes possible to do.
Thus, the counterpoise connection adapter X according to the present embodiment can contribute to improving the performance of the antenna of the portable communication device T by attaching the counterpoise C to the portable communication device T as necessary. Portability can be secured by removing the counterpoise C during storage and transportation. It is also possible to change the apparent resonance frequency of the antenna system by preparing counterpoises of a plurality of lengths and replacing them appropriately.

In the above-described embodiment, the counterpoise C can be positioned in the optimum direction by rotating the ring member 40. However, like the counterpoise connection adapter Y shown in FIG. The counterpoise C may be configured to be positioned in the optimum direction by providing the entire circumference along the circumferential surface. By setting it as such a structure, since the lower nut member 10, the upper nut member 20, and the ring member 40 can be united, the number of parts can be reduced. However, in the ring member 40 shown in the embodiment, a plurality of counterpoise engaged portions 41 may be provided along the circumferential surface. By providing a plurality of counterpoise engaged portions 41, not only the rotation position can be selected but also a plurality of counterpoises can be connected, so that the performance of the antenna system can be further improved.
Further, when the antenna A is an antenna having an electrical length of 1 / 4λ as shown in FIG. 6, an operation similar to a 1 / 2λ dipole antenna can be realized by connecting the counterpoise C, and improvement in performance can be expected.
Then, in the above embodiment, the engaging portion Cc of the counterpoise C is a male screw and the counterpoise engaged portion 41 is a female screw, but one is a pin-shaped pin plug and the other is a socket for receiving it. Any connector format can be employed.

X, Y Counterpoise connection adapter T Portable communication device Tc Aerial cable plug A Antenna cable Ac Antenna cable C Counterpoise Cc Engagement part Xa Plug Xb Plug seat Xc Counterpoise holding part 10 Lower nut member 11 Female screw 12 Small-diameter portion 13 Corrugated washer 20 Upper nut member 21 Female screw 22 Small-diameter portion 23 Corrugated washer 30 Core member 31a Male screw 40 Ring member 41 Counterpoise engaged portion

Claims (3)

Counterpoise connection for connecting a counterpoise having an engaging portion at one end, provided between a plug seat for the antenna of the portable communication device and a plug detachable from the plug seat provided on the antenna. An adapter,
A plug detachable from the plug seat;
When it is detachable from the plug, a plug seat,
A counterpoise holding portion having an engaged portion that engages with an engaging portion of the counterpoise provided between the plug and the plug seat;
A counterpoise connection adapter for electrically connecting the antenna line and the counterpoise to be connected to the portable communication device main body.   2. The counterpoise connection adapter according to claim 1, wherein the counterpoise holding part is fixed to be rotatable with respect to a central axis along a connection direction of the antenna plug. 3.   3. The counter according to claim 1, wherein the counterpoise holding portion is provided with two or more of the engaged portions in different rotational directions with respect to a central axis along a connection direction of the antenna plug. Poise connection adapter.

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