JP3465802B2 - Antenna device and portable wireless device - Google Patents

Description

Detailed Description of the Invention

[0001]

[Table of Contents] The present invention will be described in the following order. Industrial applications Conventional technology (Figs. 3 and 4) Problems to be Solved by the Invention Means for Solving the Problems (FIGS. 1 and 2) Action Example (FIGS. 1 and 2) The invention's effect

[0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antenna device and a portable wireless device, and is particularly suitable for application to a small portable wireless device.

[0003]

2. Description of the Related Art In recent years, portable wireless devices have been reduced in size and weight in order to improve portability. Along with this, the antenna device is also required to be small. Therefore, a whip antenna has been actively developed that can be stored in the main body when carrying and can be used by pulling out from the main body when talking. Earlier portable radios used whip antennas of a relatively simple type. However, this type of whip antenna has the following drawbacks. That is, when the antenna is used with it pulled out from the main body, it operates as a monopole antenna, but when the antenna is housed in the main body, there is a drawback that sufficient gain cannot be obtained. This is because the antenna accommodated in the main body is arranged near the ground, the input impedance rises, and it is almost impossible to achieve matching.

Therefore, in order to improve the gain during storage, a whip antenna of the type in which a helical antenna is electrically connected to the upper end of the linear antenna, that is, a so-called top-loading type whip antenna is used. When this type of whip antenna is pulled out from the main body and used, radio waves can be mainly emitted from the helical antenna and the linear antenna, and even when the antenna is housed in the main body, the helical antenna at the upper end portion can mainly emit radio waves.

However, in the case of this whip antenna, there is a portion of the linear antenna that does not contribute to the emission of radio waves when it is stored. This part operates as an open stub. The open stub affects the input impedance of the antenna and causes a slight disturbance of the matching state due to the distance from the substrate in the storage space. In addition, if the shield is not perfect, it has some problems such as picking up a signal from the stored linear antenna part or causing a phenomenon that the signal jumps into the shield, The design of this type of whip antenna was not so good.

Therefore, as disclosed in, for example, US Pat. No. 5,204,687, an antenna device has been developed in which a linear antenna is electrically separated when housed. A conventional example of such an antenna device will be described with reference to FIGS. Incidentally, FIG. 3 shows a state in which the antenna portion is pulled out, and FIG. 4 shows a state in which the antenna portion is housed.
However, an overall view of the portable wireless device is omitted, and only a portion near the antenna device will be described.

First, the main body 2 of the portable wireless device 1 is made of a non-metallic material, and a circuit board 3 on which a transmission / reception circuit necessary for the wireless device is mounted is housed inside the main body 2.
In addition, the circuit board 3 is provided with a feeding circuit 3A for the antenna device 4. The power feeding circuit 3A plays a role of feeding power to the antenna device 4 via the power feeding spring 3B, and also plays a role of matching the characteristic impedance from the transmitting / receiving circuit and the input impedance of the antenna device 4.

Here, the antenna device 4 is a linear antenna 4
It is characterized in that it is composed of two antenna parts of A and the spiral antenna 4B, and the two antenna parts are electrically separated. The linear antenna 4A mainly operates when the antenna is pulled out, and the spiral antenna 4B operates when the antenna is housed. In this case, the non-conductive antenna cover 4C functions as a spacer, whereby the linear antenna 4A and the spiral antenna 4B are electrically separated.
The antenna device 4 is attached to the main body 2 by screwing the antenna support metal fitting 4D of the antenna device 4 into the antenna mounting metal fitting 2A incorporated in the main body 2.

Here, as shown in FIG. 3, when the antenna is pulled out, the antenna support spring 4D in the antenna support fitting 4D is provided.
A and 4DB hold the stopper 4E at the time of withdrawal provided at the lower end of the linear antenna 4A. As a result, the linear antenna 4A and the power feeding circuit 3A are electrically connected to each other through the power feeding spring 3B, the antenna mounting metal fitting 2A, the antenna supporting metal fitting 4D, and the stopper 4E at the time of extraction, and the linear antenna 4A is grounded on the circuit board 3. Also, it operates as a monopole antenna with the shield case as the ground. In this case, the pull-out stopper 4E also functions to prevent the antenna portion from falling off when the antenna is pulled out.
In addition, the periphery of the linear antenna 4A is covered with a non-conductive antenna cover 4C so that the linear antenna 4A does not come into direct contact with the human body.

On the other hand, as shown in FIG. 4, when the antenna is stored,
Antenna support springs 4DA, 4 in the antenna support fitting 4D
DB holds the stopper 4F at the time of storage provided at the lower end of the spiral antenna 4B. This allows the spiral antenna 4B
And the power feeding circuit 3A are electrically connected through the power feeding spring 3B, the antenna mounting metal fitting 2A, the antenna supporting metal fitting 4D, and the storage stopper 4F in this order, and the spiral antenna 4B connects the ground of the circuit board 3 and the shield case to the ground. It works as a helical antenna. In this case, the storage stopper 4F also has a function of preventing the antenna portion from falling inside the portable wireless device 1 when the antenna is stored. Further, the periphery of the spiral antenna 4B is covered with a non-conductive antenna cover 4G, so that the spiral antenna 4B does not come into direct contact with the human body. The antenna cover 4G also functions as a knob when the antenna is pulled out.

In this way, in the antenna device 4, the individual antenna parts individually operate when the antenna device 4 is pulled out and when the antenna device 4 is housed. Therefore, if the impedance of the individual antenna parts is optimized, the same matching circuit is used for good radiation. The characteristics can be obtained. Incidentally, in the antenna device 4 described above, as shown in FIGS. 3 and 4, the linear antenna 4A and the stopper 4E at the time of extraction are connected by screwing.
There is also an antenna device in which a through hole is provided in the stopper 4E at the time of pulling out and the linear antenna 4A is passed through and connected by caulking or the like.

[0012]

In the antenna device 4 of this kind, only the linear antenna 4A actually operates when the antenna is pulled out, and the spiral antenna 4B.
Does not work. That is, in the antenna device 4, the effective antenna length that actually operates as an antenna is shorter than the apparent antenna length. For this reason, the antenna device 4 of this type has a problem that the antenna characteristics are deteriorated under the influence of the human body, particularly the head, during a call. Further, the antenna cover 4C provided between the linear antenna 4A and the spiral antenna 4B is weak in mechanical strength because it is made of a non-conductive material. Therefore, when the antenna is pulled out, the antenna device 4 may be damaged at this portion.

The present invention has been made in consideration of the above points, and an object thereof is to propose an antenna device and a portable wireless device which can avoid deterioration of antenna characteristics.

[0014]

In order to solve the above problems, according to the present invention, a spiral antenna part composed of a spiral antenna, a linear antenna part composed of a linear antenna, and a lower end of the spiral antenna part. And a non-conductive member that connects the upper ends of the linear antenna parts, and an antenna part that is provided so as to be able to be pulled out and stored in the main body, and a conductive member that is slidable along the outer circumference of the antenna part. When the antenna part is pulled out from the main body, the conductive member slides to a position in contact with the lower end part of the spiral antenna part and the upper end part of the linear antenna part, so that the spiral antenna part and the linear antenna part. When the antenna part is electrically connected to the main body and the antenna part is housed in the main body, the spiral antenna part and the linear antenna part are electrically connected by sliding to a position in contact with only the spiral antenna part. It was to be away.

Further, according to the present invention, in a portable wireless device using an antenna device, the antenna device comprises a spiral antenna part composed of a spiral antenna, a linear antenna part composed of a linear antenna, and a spiral antenna. A non-conductive member that connects the lower end of the antenna part and the upper end of the linear antenna part, and the antenna part is provided so that it can be pulled out and stored in the main body, and the conductive part that can slide along the outer circumference of the antenna part. The conductive member includes a member, and when the antenna portion is pulled out from the main body, the conductive member slides to a position in contact with the lower end portion of the spiral antenna portion and the upper end portion of the linear antenna portion. The antenna part is electrically connected,
When the antenna part is housed in the main body, the spiral antenna part and the linear antenna part are electrically separated by sliding to a position in contact with only the spiral antenna part.

[0016]

[Operation] When the antenna portion is pulled out, the linear antenna portion and the spiral antenna portion are electrically connected, and when the antenna portion is stored, the linear antenna portion and the spiral antenna portion are electrically separated. By doing so, when the antenna part is pulled out, it operates as a top-down type antenna consisting of a linear antenna part and a spiral antenna part, and when the antenna part is stored, only the spiral antenna part operates as an antenna. . As a result, when the antenna part is pulled out, it operates as a topo-reading type antenna and is less likely to be affected by the human body. When the antenna part is housed, the linear antenna part is electrically separated, so the linear antenna part Can be prevented from acting as an open stub and the influence on the antenna characteristics can be avoided.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings.

1 and 2 in which parts corresponding to those in FIGS. 3 and 4 are designated by the same reference numerals, 10 indicates an antenna device as a whole, and a linear antenna 10A made of a linear conductor.
And two antenna parts of the spiral antenna 10B made of a spiral conductor. In this antenna device 10, the linear antenna 10A operates when the antenna is pulled out, and the spiral antenna 10B operates when the antenna is pulled out and stored. In this case, the antenna device 10 is attached to the main body 2 by screwing the antenna support metal fitting 10C of the antenna device 10 into the antenna attachment metal fitting 2A incorporated in the main body 2.

A pull-out stopper 10D made of a conductive material is connected to the lower end of the linear antenna 10A by screwing. Stopper 10 at the time of this drawer
The outer periphery of D has a step, and a portion having a large outer diameter functions as a stopper portion when the antenna is pulled out, and a portion having a slightly smaller outer diameter functions as an antenna supporting portion. In addition, the linear antenna 1
At the upper end of 0A, a connection fitting 1 also made of a conductive material
OE is connected by screwing. A stopper portion 10EA protruding outward is provided as a stopper portion of an antenna connecting fitting 10J, which will be described later, at a substantially central portion of the outer periphery of the connecting fitting 10E. In addition, the linear antenna 10A
A cylindrical antenna cover 1 made of non-conductive material around
It is covered with 0F, which protects the linear antenna 10A from direct contact with the human body.

On the other hand, at the lower end of the spiral antenna 10B,
Stopper 1 made of a conductive material and has a T-shaped cross section when stored
0G is connected by crimping or the like. Further, the periphery of the spiral antenna 10B is covered with an antenna cover 10H made of a non-conductive material, which protects the spiral antenna 10B from directly touching the human body. The antenna cover 10H is made of an appropriately hard synthetic resin or the like, and is fixed to the stopper 10G during storage by screwing.

At the lower end of the above-mentioned storage stopper 10G,
One end of the connector 10I made of a non-conductive material is connected by screwing. The connection fitting 10E of the above-mentioned linear antenna 10A is connected to the other end of the connection tool 10I by screwing. Thereby, the linear antenna 10A
The spiral antenna 10B and the connection fitting 10E, the connection tool 1
0I and the storage stopper 10G are connected in a straight line and assembled in the state as shown in FIGS.

Here, a cylindrical antenna connection fitting 10J made of a conductive material and penetrated by an antenna portion is provided on the outer circumference of the connection fitting 10E, the connection tool 10I and the storage stopper 10G. A convex portion 10 that protrudes outward is provided at a substantially central portion of the outer periphery of the antenna connecting fitting 10J.
JA is provided, and the upper and lower ends project inward,
Moreover, the convex portions 10JB and 10JC having elasticity are provided. Since this antenna connection fitting 10J has a tubular shape, it can slide up and down along the antenna part. In this case, since the connection fitting 10E is provided with the stopper portion 10EA, the movable range of the antenna connection fitting 10J is within the range of the connection fitting 10E.
The range is from the stopper portion 10EA of E to the base portion 10GA of the stopper 10G when stored.

At the upper and lower ends of the movable range,
The antenna connecting fitting 10J is fixed by the elastic force generated on the convex portions 10JB and 10JC. In this example,
The connection fitting 10E and the storage stopper 10G are provided with three recesses corresponding to the intervals of the protrusions 10JB and 10JC of the antenna connection fitting 10J, and the protrusions 10JB and 10JC of the antenna connection fitting 10J engage with the recesses. By fitting them together, they are more securely fixed.

Here, the length relationship among the antenna connecting fitting 10J, the storage stopper 10G, the connecting tool 10I and the connecting fitting 10E is as follows. That is, when the antenna connection fitting 10J moves to the upper limit of the movable range, the lower end of the antenna connection fitting 10J is above the connector 10I, and when the antenna connection fitting 10J moves to the lower limit of the movable range, the antenna The lower end of the connection fitting 10J is the connection tool 1
The upper end of the antenna connection fitting 10J contacts the stopper 10G when it is housed, and the upper end of the antenna connection fitting 10J contacts the stopper 10G when it is housed. As a result, when the antenna connection fitting 10J moves to the upper limit of the movable range, the linear antenna 10A and the spiral antenna 10B are electrically separated, and when the antenna connection fitting 10J moves to the lower limit of the movable range, The linear antenna 10A and the spiral antenna 10B include a connection fitting 10E and an antenna connection fitting 10
It is in a state of being electrically connected via J and the stopper 10G at the time of storage.

The antenna portion thus formed is supported by the antenna support fitting 10C. Two antenna support springs 10CA and 10CB having an inner spring structure are provided inside the antenna support fitting 10C, and the antenna support springs 10CA and 10CB sandwich the antenna support portion of the stopper 10D at the time of pulling out the antenna. The part is supported. In this case, by providing the two antenna support springs 10CA and 10CB, it is possible to suppress the “tick” and the noise caused by the vibration of the antenna portion.

The antenna support springs 10CA and 10CB
Each is provided with a convex portion that protrudes inward. The convex portion of the antenna support spring 10CA is a convex portion 10J of the antenna connecting fitting 10J when the antenna portion is pulled out.
The convex portion of the antenna support spring 10CB is caught on the upper end of A and the antenna connecting fitting 10 is used when the antenna portion is housed.
It is caught on the lower end of the convex portion 10JA of J. In this case, the upper end of the stopper 10D at the time of pulling out is chamfered so that the convex portion of the antenna support spring 10CA does not catch on the stopper 10D at the time of pulling out the antenna portion. Further, when the antenna portion is stored, the convex portion of the antenna support spring 10CA and the antenna support spring 10CB
10JA of the antenna connecting fitting 10J between the convex part of the
, The distance between the convex portion of the antenna support spring 10CA and the convex portion of the antenna support spring 10CB is the size (or more) of the convex portion 10JA of the antenna connecting fitting 10J.
Is set to.

Incidentally, in the antenna device 10, the stress acting on the antenna portion is set as follows. That is, the convex portions 10JB, 1 of the antenna connection fitting 10J described above
Elastic force of 0JC, antenna support spring 10CA, 10CB
Tension stress and antenna support spring 10CA, 10
Of the spring stress of CB itself, the elastic force of the convex portions 10JB and 10JC of the antenna connection fitting 10J is set to be the smallest. As a result, when the antenna is pulled out and stored, the connection fitting 10J has the antenna support springs 10CA and 1CA.
It can move in the movable range by engaging 0CB.

In the above structure, the operation state will be described for two cases, that is, when the antenna portion is pulled out from the main body 2 and when it is stored. First, when the antenna portion is pulled out, as shown in FIG. 1, the antenna portion is supported by the antenna supporting springs 10CA and 10CB holding the antenna supporting portion of the stopper 10D at the time of pulling out. At this time, the linear antenna 10A is electrically connected to the power feeding circuit 3A via the stopper 10D when pulled out, the antenna support metal fitting 10C, the antenna mounting metal fitting 2A, and the power feeding spring 3B.

Further, in this state, the antenna connecting fitting 10J is located at the lower end of the movable range. That is, the upper end of the antenna connection fitting 10J contacts the stopper 10G during storage, and the lower end of the antenna connection fitting 10J contacts the connection fitting 10E. As a result, the linear antenna 10A and the spiral antenna 10B are connected to each other by the connection fitting 10E and the antenna connection fitting 1
0J and the storage stopper 10G are electrically connected. Thus, the linear antenna 10A and the spiral antenna 1
OB forms one antenna and operates as a top-down type monopole antenna having the ground of the circuit board 3 and the shield case as the ground.

When housing the antenna portion pulled out here, the operator pushes the upper part of the antenna cover 10H downward, for example. As a result of this operation, the antenna support portion of the stopper 10D at the time of pulling out is the antenna support fitting 1
0C, and the portion of the linear antenna 10A enters into the antenna support fitting 10C. In this case, the portions of the linear antenna 10A are the antenna support springs 10CA and 10C.
Since it does not touch B, it smoothly moves downward without any resistance.

Next, the antenna connection fitting 10J begins to enter the antenna support fitting 10C. In this case, the antenna connection fitting 10J receives spring stress from the antenna support spring 10CA of the antenna support fitting 10C, but is not locked by the antenna support spring 10CA, and the antenna support spring 10C.
Pass part A. Next, when the antenna connecting metal fitting 10J reaches the portion of the antenna supporting spring 10CB, the lower end of the convex portion 10JA of the antenna connecting metal fitting 10J is caught by the convex portion of the antenna supporting spring 10CB and the convex portion 10J.
A is engaged between the convex portion of the antenna support spring 10CA and the convex portion of the antenna support spring 10CB.

When pushed further downward in this state,
Since the convex portion 10JA is engaged between the convex portion of the antenna supporting spring 10CA and the convex portion of the antenna supporting spring 10CB, the antenna connecting fitting 10J does not move and only the antenna portion moves downward. Then, the base portion 10GA of the stopper 10G when stored is, as shown in FIG.
When C is reached and touched, the storage operation is completed. At this time, the antenna connection fitting 10J is located at the root portion 10GA of the stopper 10G when stored. In other words, the antenna connection fitting 10J is located at the upper end of the movable range.

In the state where the antenna portion is thus housed (FIG. 2), since the antenna connecting fitting 10J is located at the upper end of the movable range, the linear antenna 10A and the spiral antenna 10B are electrically separated. It will be in the state of being.
Further, the spiral antenna 10B is electrically connected to the power feeding circuit 3A via the stopper 10G, the antenna support metal fitting 10C, the antenna mounting metal fitting 2A and the power feeding spring 3B during storage. As a result, only the spiral antenna 10B functions as an antenna, and operates as a helical antenna having the ground of the circuit board 3 and the shield case as the ground. In this case, since the linear antenna 10A is in an electrically floating state, it does not affect the antenna characteristics and the like.

When pulling out the antenna portion stored here, the operator holds the antenna cover 10H and pulls it upward. At this time, the antenna connecting fitting 10J does not move because the upper end of the convex portion 10JA is caught and locked by the convex portion of the antenna support spring 10CA, and only the antenna portion moves upward. This state continues until the stopper portion 10EA of the connecting fitting 10E comes into contact with the lower end of the antenna connecting fitting 10J. In other words, it continues until the antenna connection fitting 10J is located at the lower end of the movable range.

The stopper portion 10EA is the antenna connecting fitting 1
When the lower end of 0J is contacted and the pulling operation is further continued in this state, the stopper portion 10EA moves the antenna connecting metal fitting 10J more than the force of the convex portion of the antenna supporting spring 10CA locking the convex portion 10JA of the antenna connecting metal fitting 10J. Since the force of pushing up is stronger, the antenna connecting fitting 10J is pushed out of the main body 2 together with the antenna portion. At this time, the antenna connecting fitting 10J is located at the lower end of the movable range, the upper end thereof contacts the stopper 10G during storage, and the lower end contacts the connecting fitting 10E.

When the pulling operation is further continued in this state and the stopper portion of the stopper 10D at the time of pulling abuts against the antenna support metal fitting 10C as shown in FIG. 1, the pulling operation is completed. At this time, since the antenna connection fitting 10J is located at the lower end of the movable range, the linear antenna 10A and the helical antenna 10B are electrically connected to each other and operate as a topo-proding type monopole antenna as described above.

As described above, the antenna connection fitting 1 electrically connects the linear antenna 10A and the spiral antenna 10B when the antenna is pulled out, and electrically separates the linear antenna 10A and the spiral antenna 10B when the antenna is housed.
By providing 0J, the antenna device 10 has the linear antenna 10A and the spiral antenna 1 when the antenna is pulled out.
The antenna operates as a top-down type monopole antenna composed of 0B, and operates as a helical antenna composed of only the spiral antenna 10B when the antenna is housed. As a result, in the antenna device 10, the effective antenna length does not become shorter than the apparent antenna length as in the conventional case, and the apparent antenna length becomes the effective antenna length as it is.

Further, since the antenna device 10 operates as a so-called top-loading type antenna when the antenna is pulled out, current concentrates on the open end of the antenna. As a result, the antenna device 10 is less likely to be affected by the human body, particularly the head, and the deterioration of the antenna characteristics can be avoided. Furthermore, in the antenna device 10, since the non-conductive connector 10I is covered by the antenna connecting fitting 10J when the antenna is pulled out, the mechanical strength is improved and the antenna damage can be avoided. Further, in the antenna device 10, the linear antenna 10A and the spiral antenna 10B are separated when the antenna is housed, and thus the antenna device 10 operates as a simple helical antenna. In this case, the linear antenna 10A does not act as an open stub as in the conventional case, and does not affect the antenna characteristics. Further, since the linear antenna 10A is electrically separated, the transmission power is not radiated inside.

According to the above configuration, the linear antenna 10A and the spiral antenna 10B are electrically connected when the antenna is pulled out, and the linear antenna 10A is stored when the antenna is housed.
By providing the antenna connection fitting 10J that electrically separates the spiral antenna 10B from the spiral antenna 10B, the antenna operates as a top-down type antenna composed of the linear antenna 10A and the spiral antenna 10B when the antenna is pulled out, and the antenna is housed. Sometimes the linear antenna 10A is separated and only the spiral antenna 10B operates. As a result, when the antenna is pulled out, it is less likely to be affected by the human body,
Further, when the antenna is housed, the linear antenna 10A does not function as an open stub, and the influence on the antenna characteristics can be avoided. Thus, the antenna device 10 capable of avoiding the deterioration of the antenna characteristics can be realized. Further, by using such an antenna device 10, the portable wireless device 1 can obtain good radiation characteristics.

In the above embodiment, the case where the antenna cover 10H is screwed and fixed to the stopper 10G at the time of storage is described, but the present invention is not limited to this, and the antenna cover 10H and the spiral antenna 10B may be integrally formed. You can

In the above embodiment, the case where the cylindrical antenna cover 10F is provided around the linear antenna 10A has been described. However, the present invention is not limited to this, and the antenna cover 10F is the linear antenna 10A. You may make it integrally molded.

Further, in the above embodiment, the case where the linear antenna 10A and the stopper 10D at the time of pulling out are connected by screwing is described, but the present invention is not limited to this, and a through hole is provided in the stopper at the time of pulling out. You may make it connect through a linear antenna and use methods, such as caulking.

In the above embodiment, the connecting fitting 1
0E, the connection tool 10I, and the storage stopper 10G are connected by screwing. However, the present invention is not limited to this, and other methods such as integral molding may be used for connection. You can

Further, in the above-mentioned embodiments, the case where the linear antenna 10A is simply composed of a linear conductor has been described, but the present invention is not limited to this, and the linear antenna may be composed of an elastic conductor. Alternatively, the breakage of the antenna may be prevented by forming the spring material in a densely wound conductor or by forming a spiral conductor having a small diameter.

[0045]

As described above, according to the present invention, the linear antenna part and the spiral antenna part are electrically connected when the antenna part is pulled out, and the linear antenna part is housed when the antenna part is housed. By electrically separating the antenna part and the spiral antenna part, when the antenna part is pulled out, it operates as a top-down type antenna consisting of the linear antenna part and the spiral antenna part, and the antenna part is stored. When this is done, only the spiral antenna portion operates as an antenna. As a result, when the antenna part is pulled out, it operates as a topo-reading type antenna and is less likely to be affected by the human body. When the antenna part is housed, the linear antenna part is electrically separated, so the linear antenna part Can be prevented from acting as an open stub and the influence on the antenna characteristics can be avoided. As a result, it is possible to realize an antenna device that can avoid deterioration of antenna characteristics. Further, by using such an antenna device, it is possible to realize a portable wireless device that can avoid deterioration of antenna characteristics.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a connection state of respective parts when an antenna device according to an embodiment of the present invention is pulled out.

FIG. 2 is a cross-sectional view showing a connection state of each part when the antenna device is housed.

FIG. 3 is a cross-sectional view showing a connection state of each part when the conventional antenna device is pulled out.

FIG. 4 is a cross-sectional view showing a connection state of each part when the conventional antenna device is housed.

[Explanation of symbols]

1 ... Portable radio device, 2 ... Main body, 3 ... Circuit board, 4,
10 ... Antenna device, 4A, 10A ... Linear antenna, 4B, 10B ... Spiral antenna, 4C, 4G, 1
0F, 10H ... Antenna cover, 4E, 10D ... Stopper when pulling out, 4F, 10G ... Stopper when storing,
10E ... Connection fitting, 10I ... Connection tool, 10J ... Antenna connection fitting.

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References Japanese Patent Laid-Open No. 6-85519 (JP, A) Actual Development No. 6-66108 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) H01Q 9/32 H01Q 1/24

Claims (4)

(57) [Claims] 1.A spiral antenna consisting of a spiral antenna
And a linear antenna section including a linear antenna,
The lower end of the spiral antenna part and the upper end of the linear antenna part
It has a non-conductive member that connects the
An antenna part that can be stored Conductive member slidable along the outer circumference of the antenna part
When With The conductive member, When the antenna part is pulled out from the main body,
Above the lower end of the spiral antenna and above the linear antenna
By sliding to the position where it touches the end,
The antenna part and the above linear antenna part are electrically connected and
When the antenna part is stored in the main body,
By sliding to a position where it contacts only the spiral antenna
The spiral antenna section and the linear antenna section.
Be separated The anneal according to claim 1, wherein
Tena device. 2. The conductive member has a cylindrical shape which is penetrated by the antenna portion, and the conductive member extends from the main body to the antenna.
When the part is pulled out, the lower end of the spiral antenna part
And slide to a position in contact with the upper end of the linear antenna section.
The antenna device according to claim 1, wherein the antenna device covers the non-conductive member . 3.AA portable wireless device using an antenna device
hand, The antenna device isThe spiral antenna part consisting of a spiral antenna and the linear
The linear antenna part consisting of an antenna and the spiral antenna
Connecting the lower end of the antenna part and the upper end of the linear antenna part.
It has a conductive member and is installed so that it can be pulled out and stored
Antenna part, Conductive member slidable along the outer circumference of the antenna part
When With The conductive member, When the antenna part is pulled out from the main body,
Above the lower end of the spiral antenna and above the linear antenna
By sliding to the position where it touches the end,
The antenna part and the above linear antenna part are electrically connected and
When the antenna part is stored in the main body,
By sliding to a position where it contacts only the spiral antenna
The spiral antenna section and the linear antenna section.
Be separated And a portable wireless device. 4. The conductive member has a cylindrical shape which is penetrated by the antenna portion, and the conductive member extends from the main body to the antenna.
When the part is pulled out, the lower end of the spiral antenna part
And slide to a position in contact with the upper end of the linear antenna section.
The portable wireless device according to claim 3, wherein the non-conductive member is covered with a cover .