JP3272510B2 - transceiver - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to wireless communication of a portable telephone or the like.
About the machine.

[0002]

2. Description of the Related Art In recent years, portable radios, especially portable telephones, have been remarkably popularized. Antennas of such portable telephones are formed to be extendable and contractable in consideration of portability. As a prior art relating to such an antenna of a portable telephone, there is an "antenna" disclosed in Japanese Patent Application Laid-Open No. 3-245603.

FIG. 7 is a perspective view showing a radio telephone disclosed in the above-mentioned publication. FIG. 8 is a longitudinal sectional view of the wireless telephone shown in FIG. 7, and particularly shows a structure around the antenna.

A wireless telephone 70 shown in FIG. 7 has an antenna 80 that is pulled out during a call and stored and used when not in use. The antenna 80 has a rod-shaped antenna member 80a and an antenna member 80b formed by a loading coil incorporated in a knob provided at the tip thereof. These two antenna members 8
0a and 80b each have an effective length of ４ wavelength, and when pulled out, the whole functions as a 波長 wavelength antenna, and when stored, the loading coil provided at the tip portion is １ ／ wavelength. It functions as an antenna of length. Therefore, standby or the like is possible even during storage, and during normal conversation, the entire antenna 80 can be pulled out of the housing and used as a more sensitive antenna.

When the antenna 80 is stored, it is necessary to completely prevent the function of the antenna member 80a inside the wireless telephone 70. Therefore, as shown in FIG. 8, the rod-shaped antenna member 80a is
It is brought into contact with the ground piece 74 at a position at a length of 2 to 1/4 wavelength. With this configuration, the impedance Z when the rod-shaped antenna member 80a is viewed from the power supply section 72 becomes infinite, and almost no power is supplied to the rod-shaped antenna member 80a, and no radio wave is emitted.

[0006]

By the way, in the antenna used in the above-mentioned conventional radio telephone, the rod-shaped antenna member 80a is partially thinned in order to facilitate the extraction and storage of the antenna. The other stopper 82 near the front end and the stopper 84 at the base are formed thick. As a result, the stopper portion 84 fits into the housing connecting portion 86 at the time of withdrawal, and the stopper 8 at the time of storage.
2 fits into the housing connecting portion 86 to fix the antenna 80. For this reason, when the antenna 80 is stored in the housing 70 at the time of storage, rattling occurs, and even if this rattling occurs, the antenna 80, particularly the stopper portion 84 which is the tip thereof, The layout of these parts must be decided so as not to damage the parts.
There is a problem that the space around the antenna cannot be used freely. In particular, as shown in FIG.
When the stopper 84 is brought into contact with the stopper 4, if the backlash is too large, the stopper 84 may damage the ground piece 74 and the like, and it is necessary to devise a shape that does not cause damage. there were.

Further, the antenna used in the above-mentioned radio telephone has an earthing piece 74 provided at a position one-quarter wavelength from the power supply section 72, and the antenna 80 located at an intermediate position between them when stored. By making the impedance Z infinite, the antenna housed inside the housing is invalidated. However, since various wirings actually exist around the antenna member 80a, these wirings (particularly, Antenna member 80).
It has been difficult to completely eliminate radiation from a and completely eliminate the effect on other electronic components. Further, since it is necessary to provide the grounding piece 74 at a position exactly １ ／ wavelength long, design restrictions such as fixing the frequency to be used arise, which is not preferable.

Therefore, the present invention has been made in view of the above-mentioned problems, and makes it possible to effectively utilize the space around the antenna even when stored, and to completely eliminate the influence of radio waves radiated from the antenna. It is an object of the present invention to provide a wireless device capable of performing such operations .

[0009] To solve the above-mentioned object, a first aspect is provided.
Radio apparatus according to the invention, the rod-shaped antenna member provided to be at least partially accommodated in the housing, and a power supply unit connected to the time storage and during withdrawal of the antenna member is grounded, when stored A metallic tubular member into which the antenna member housed from the power supply unit is inserted, and an electromagnetic shield for a high-frequency component disposed in the housing
And a metal housing for performing the operation , wherein the tubular member is housed.
At least at a position where it engages with the tip of the antenna member.
Is also provided with one vertical slit groove.
A part having a groove is fitted into a part of the metal housing and fixed.
The inner diameter of the portion having the vertical slit groove is
It is small, characterized by the this <br/> for fixing the antenna member during storage.

[0010]

[0011]

[0012]

According to the first aspect of the present invention, a metal tubular member is provided inside the housing of the wireless device and inside the power supply portion, and the antenna member is housed so as to be inserted through the tubular member. . Therefore, since the cylindrical member serves as a guide for the antenna member, the antenna member is reliably inserted, and the space around the cylindrical member can be effectively used. Further, since the metallic tubular member is grounded, the radio wave radiated from the antenna member housed inside the tubular member is completely shielded, and the influence thereof can be completely eliminated.

[0013] In the invention of claim 1, which only set the vertical slit groove of at least one in the tubular member described above. Since the part provided with the vertical slit groove functions as a leaf spring,
The distal end portion of the antenna member is securely fixed in the vertical slit groove portion, so that the stored antenna is securely fixed and electrically connected.

According to the first aspect of the present invention, the above-described tubular member is fitted into a part of a metal housing for electromagnetically shielding a high-frequency component, and the fitting reduces the inner diameter of the vertical slit groove. . Therefore, when manufacturing the tubular member, it is not necessary to particularly reduce the inner diameter of the vertical slit groove portion,
By assembling the cylindrical member, the inner diameter of the longitudinal slit groove portion is inevitably reduced, and electrical connection is performed. In particular, since it is not easy to accurately match the inner diameter of the vertical slit groove functioning as a leaf spring, if the inner diameter is necessarily determined at the time of assembly, the manufacture of the tubular member becomes easy .

[0015]

EXAMPLES The following is a detailed description portable telephone of one embodiment to which the present onset bright with reference to the drawings.

FIGS. 1 and 2 are partially enlarged sectional views of the portable telephone of the present embodiment. FIG. 1 shows a state in which the antenna is housed, and FIG. 2 shows a state in which the antenna is pulled out.

The antenna 20 is connected to the housing 10 of the portable telephone.
It is formed so that it can be taken in and out of the housing 10, is pulled out when making a call, and can be stored inside the housing 10 during standby.

This antenna 20 is composed of a rod-shaped antenna member 22 and a loading coil 26 built in a knob 24 provided at the tip thereof. When the antenna 20 is pulled out, these antenna members 22
When both the antenna and the loading coil 26 are exposed to the outside of the housing 10 and the antenna 20 is housed, only the rod-shaped antenna member 22 is housed in the housing 10 and only the knob portion 24 in which the loading coil 26 is incorporated is provided. Are exposed outside the housing 10.

Each of the rod-shaped antenna member 22 and the loading coil 26 has a length of about 約 wavelength, and the whole antenna 20 is 時 に は when it is pulled out.
It functions as an antenna having a wavelength length. On the other hand, when stored, only the loading coil 26 exposed to the outside of the housing 10 functions as an antenna having a length of 1/4 wavelength.

One end (the loading coil 26 side) of the rod-shaped antenna member 22 forms a cylindrical stopper 40 having an outer diameter slightly larger than the center portion, and the other end is substantially equal to the stopper 40. A stepped cylindrical stopper portion 42 having an outer diameter and a larger outer diameter is formed.

The RF board 30 is a printed board on which high-frequency components are mounted, and a power supply section 32 is formed in a part thereof. The housing joint 34 is a member having a cylindrical shape made of metal, and has a male screw groove formed in a part of the outer peripheral surface. By screwing this male screw groove into a female screw groove formed in a part of the housing 10, the housing joint portion 34 is connected to the housing 10.
To be fixed.

The inner diameter of the housing joint 34 is determined by the stopper 40 and the stopper 42 of the antenna 20 described above.
It is set slightly smaller than the outer diameter of each of the above, by fitting the stopper 40 and the housing joint 34 at the time of storage, and by fitting the stopper 42 and the housing joint 34 at the time of pulling out, The antenna 20 is fixed.

When the assembly of the housing joint 34 and the RF board 30 is completed, the power supply section 32 provided on a part of the RF board 30 comes into electrical contact with the outer peripheral side of the housing joint 34. Thereby, the stopper part 40 or the stopper part 42 of the antenna member 22 from the power supply part 32 through the housing joint part 34.
Is supplied to the power supply.

The shield tube 50 is a metal tube that is partially grounded, and disables the function of the antenna member 22 housed therein, so as not to operate as an antenna.

FIG. 3 is a perspective view showing the detailed structure of the shield tube 50. As shown in FIG.
The upper end of the antenna member 22 is formed so as to have a wide opening so that a stopper 42 formed at one end of the antenna member 22 can be smoothly inserted. Further, two vertical slit grooves 52 are formed near the lower end thereof, and the tip portions of the two pieces excluding the vertical slit grooves 52 sandwich a stopper portion 42 formed at one end of the antenna member 22. Function as

More specifically, the inner diameter of the shield tube 50 except for the portion where the above-described vertical slit groove 52 is formed is set slightly larger than the maximum outer shape of the stopper portion 42.
Therefore, when the antenna member 22 is stored in the housing 10, the antenna member 22 is loosely inserted into the shield tube 50 from the side of the stopper portion 42, and is stored without interfering with other wirings and components. Will be

The inner diameter of the portion where the vertical slit groove 52 is formed becomes smaller toward the tip of the shield tube 50, and the inner diameter of the tip portion is set slightly smaller than the maximum outer shape of the stopper portion 42. . Therefore, when the stopper portion 42, which is the tip of the antenna member 22 inserted into the shield tube 50 at the time of storage, reaches the position of the vertical slit groove 52, the stopper portion 42 fits with the shield tube 50, and the antenna member 22 Along with 34, it is also fixed by the vertical slit groove portion of the shield tube 50.

The shield tube 50 is partially grounded and can absorb radio waves radiated from the antenna member 22 inserted therein, so that the entirety thereof functions as a good shield member. . For this reason, when the antenna 20 is housed in the housing 10 as shown in FIG. 1, the antenna 20 covers almost the entire length of the antenna member 22 and absorbs radio waves radiated inside the housing 10, and other wiring and The effect on electronic components can be completely eliminated. In FIG. 1, the upper end of the housing joint 34 and the shield tube 50 are illustrated as being slightly separated from each other. However, by shortening the space, it is possible to almost completely prevent the emission of radio waves into the housing 10. it can.

FIG. 4 is a diagram showing an example in which the shield tube 50 is assembled and grounded at the same time.

In the figure, a shield housing 60 is an RF
This is for shielding radio waves and the like generated by the high-frequency electronic components mounted on the substrate 30, and is formed of a metal box. The shield housing 60 is grounded, thereby shielding radio waves and the like. Two claws 62 and 64 are provided on a part of the side surface of the shield housing 60 at spaced positions. These claws 62,
64 is formed by cutting a part of the shield housing 60, for example.

One of the claws 62 near the housing joint 34
Has a gap into which the above-described shield tube 50 can be loosely inserted. The other claw portion 64 apart from the housing joint portion 34 is
The distal end portion of the shield tube 50 in which the slit groove 52 is formed has a gap that can be inserted. That is, the gap between one of the claws 62 is set slightly larger than the outer diameter of the shield tube 50, and the gap between the other claws 64 is set slightly smaller than the outer diameter of the shield tube 50.

When the shield tube 50 is inserted into the gap between the two claws 62 and 64 for assembly, the distal end portion of the shield tube 50 is fitted to the claws 64 and the shield tube 50 is shielded. At the same time as being fixed to the body 60, the shield tube 50 is grounded. Further, by fitting the distal end portion, the distal end portion is deformed, and the inner diameter of the distal end portion is slightly smaller than the maximum outer shape of the stopper portion 42 described above.

Therefore, it is not necessary to wire the shield tube 50 in particular for grounding, and it is not necessary to adjust the diameter of the distal end portion having the slit groove 52 at the time of manufacturing the shield tube 50 alone, thereby simplifying the manufacturing process. It is also possible to reduce costs and the like.

As described above, according to the present embodiment, since the shield tube 50 plays a role of a guide when the antenna 20 is housed, the antenna member 22 caused by backlash between the antenna member 22 and the housing joint 34 is prevented. There is no need to consider the run-out, and the space outside the shield tube 50 can be effectively used. Since the shield tube 50 is grounded, radio waves radiated from the antenna member 22 at the time of storage can be completely shielded, and the influence on electronic components and the like can be completely eliminated.

In particular, the longer the antenna 20 can be, the better the reception sensitivity or the longer the reach of radio waves can be. However, according to the present embodiment, when the antenna 20 is made longer, Even when the antenna 20 is securely stored, the long antenna member 22 housed in the housing 10 can be reliably disabled, which is effective when the antenna 20 is elongated. .

Further, by setting the inner diameter of the distal end portion of the shield tube 50 in which the vertical slit groove 52 is formed to be smaller than the outer diameter of the stopper portion 42 formed at one end of the antenna member 22, the stopper portion 42 is formed. When the antenna member 22 reaches the position of the slit groove 52, the antenna member 22 is fixed by the stopper portion 42 together with the stopper 40, so that the fixing at the time of storage is more reliably performed.

FIG. 5 is a view showing a modified embodiment for securing a space for accommodating the shield tube 50 and the like when the antenna 20 is lengthened.

The portable telephone main body 110 shown in FIG. 1 has a battery unit 130 connected and fixed to a part of the housing 10 on the back side (opposite to the operation surface) of the portable telephone body 110, and is mounted on the main body.
As a whole, a portable telephone is formed integrally. The main body side facing surface 112 is a facing surface of the portable telephone main body 110 side with respect to the battery unit 130, and the battery unit 130 has a unit side facing surface 13 corresponding thereto.
2 are formed.

On the main body side facing surface 112, a terminal protrusion 114 is formed near the center, and peripheral protrusions 128 are formed at two places on both sides of the terminal protrusion 114, respectively. These convex portions 114 and 128 are connected to the battery unit 130.
Is formed so as to conform to the shape of the unit-side facing surface 132. The unit-side facing surface 132 is formed in an uneven shape in accordance with the outer shape of the built-in cylindrical battery.
Are formed with convex portions 114 and 128, respectively.

FIG. 6 shows the portable telephone body 1 shown in FIG.
It is a figure which shows the cross section of the main body side facing surface 112 of FIG.

As described above, the portable telephone body 110
On the main body side facing surface 112, one terminal protrusion 114 and two peripheral protrusions 128 corresponding to the uneven shape of the battery unit 130 are formed. For this reason, in the present embodiment, a space where components and the like can be arranged is secured inside each of the convex portions (between the housing 10 and the substrate 150).
Therefore, the long antenna member 22 and the shield tube 50 that covers the long antenna member 22 that could not be housed because of interference with the battery unit 130 in the related art are housed in one of the secured spaces. Can be done,
High-sensitivity reception and longer call distances are now possible.

The present invention is not limited to the above embodiment, and various modifications can be made within the scope of the present invention.

For example, the case where two vertical slit grooves are formed in the above-described shield tube 50 has been described, but one or three or more vertical slit grooves may be formed.

In the above-described embodiment, the antenna 20
Has been described with the antenna member 22 and the loading coil 26, but the antenna 20 may be configured with only the antenna member 22. In this case, it is necessary to separately include a standby antenna constituted by a loading coil or the like and to incorporate the standby antenna. When the antenna member is stored, the standby is performed using the built-in antenna.

Further, a telescopic rod antenna may be used in place of the antenna member 22. In this case, almost all of the rod antenna may be housed inside the shield tube 50 when the antenna is housed.

[0046]

As described above, according to the first aspect of the present invention,
It has a metal tubular member inside the housing of the wireless device and inside the power supply unit, and stores the antenna member so as to be inserted through the tubular member. The antenna member is reliably inserted to serve as a guide, and the space around the tubular member can be used effectively. In addition, by grounding the metallic tubular member, the radio wave radiated from the antenna member housed inside the tubular member is completely shielded, and the influence thereof can be completely eliminated.

Further, according to the first aspect of the invention, because that only set a vertical slit groove of at least one in the tubular member described above, provided with a longitudinal slit groove portion acts as a leaf spring, the antenna member Is securely fixed in the slit groove portion, and the electrical connection is reliably performed.

According to the first aspect of the present invention, the cylindrical member is fitted into a part of the metal casing for electromagnetically shielding the high-frequency component, and the fitting reduces the inner diameter of the vertical slit groove. Therefore, the antenna member can be fixed and electrically connected. In addition, there is no need to particularly adjust only the inner diameter of the vertical slit groove portion, and no wiring for grounding is required .

[Brief description of the drawings]

FIG. 1 is a partially enlarged cross-sectional view of a portable telephone according to an embodiment.

FIG. 2 is a partially enlarged cross-sectional view of the portable telephone according to the embodiment.

FIG. 3 is a perspective view showing a detailed structure of a shield tube.

FIG. 4 is a diagram showing an example of a case where a shield tube is attached and grounding is performed at the same time.

FIG. 5 is a diagram showing a modified embodiment in which the antenna is made longer.

FIG. 6 is a view showing a cross section of the portable telephone shown in FIG. 5;

FIG. 7 is a view showing the structure of a conventional portable telephone.

FIG. 8 is a diagram showing the structure of a conventional portable telephone.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Case 20 Antenna 22 Antenna member 32 Power supply part 34 Case joining part 40 Stopper 42 Stopper part 50 Shield tube 52 Vertical slit groove 60 Shield case 62, 64 Claw part

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-4-314201 (JP, A) JP-A-6-6121 (JP, A) JP-A-2-37677 (JP, A) JP-A-3-3 245603 (JP, A) JP-A-5-95218 (JP, A) JP-A 57-74505 (JP, U) JP-A 56-137505 (JP, U) JP-A 56-137507 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) H01Q 1/12-1/24

Claims (1)

(57) [Claims] 1. A bar-shaped antenna member provided to be at least partially accommodated in the housing, and a power supply unit connected to the time storage and during withdrawal of the antenna member is grounded, the power supply unit during storage Electromagnetic shielding of a metallic tubular member through which the antenna member housed therein is inserted and a high-frequency component disposed in the housing
And a metal housing, the tubular member includes a distal end portion of the housing and said antenna member
At least one longitudinal slit groove is provided at the engaging position.
The portion having the vertical slit groove is made of the metal
The vertical slit is inserted into and fixed to a part of the housing.
The inside diameter of the portion having the groove is reduced,
A wireless device characterized in that materials are fixed when stored.