JP3236843B2 - Portable wireless devices - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable radio apparatus provided with a drawer having a coil-shaped antenna element at the tip of a rod-shaped antenna element and a retractable antenna.

[0002]

2. Description of the Related Art Hitherto, as a portable radio apparatus equipped with such an antenna, a configuration as shown in a schematic perspective view of FIG. 4 and a sectional view of a main part of FIG. 5 has been known.

As shown in FIGS. 4 and 5, the portable radio apparatus has an antenna 2 which is drawn out from a housing 1 and supported so as to be housed. The antenna 2 has a rod-shaped antenna element 3 and a coil-shaped antenna element 4 provided continuously at the tip. The rod-shaped antenna element 3 is covered with a cover 5 except for the tip, and the coil-shaped antenna element 4 is covered with a cap 6 made of synthetic resin.
Is formed. The distal end of the rod-shaped antenna element 3 is covered with a connection tube 8, and the cover 5 and the cap 6 of the antenna top 7 are integrated by the connection tube 8.

A hole 9 is formed on one side surface of the housing 1, and a recess 10 having a diameter larger than that of the hole 9 is formed above the hole 9.
The cylindrical portion of the holder 11 is inserted into the hole 9, and the flange portion 14 of the holder 11 is accommodated in the recess 10. A screw is formed on the outer periphery of the cylindrical portion of the holder 11, and the support tube 12 is screwed to the screw. Installed. And
The antenna 2 is inserted movably in the axial direction with respect to the holder 11, and the lower surface of the base of the antenna top 7 in which the rod-shaped antenna element 3 is housed in the housing 1 and the coil-shaped antenna element 4 is built in is the upper surface of the holder 11. Abut the antenna top 7
Are configured to protrude out of the housing 1.

The operation of the above configuration will be described below. By grasping the antenna top 7 and pulling it upward, and extending the antenna 2 with respect to the housing 1, radio waves can be transmitted and received between the coil-shaped antenna element 4 and the rod-shaped antenna element 3. Conversely, the antenna 2 is housed in the housing 1 and the antenna top 7 is projected above the housing 1 so that the coil-shaped antenna element 4 built in the antenna top 7 transmits and receives radio waves. be able to.

[0006]

However, in the above-mentioned conventional portable radio apparatus, the antenna top 7 protruding from the housing 1 becomes large because the coil-shaped antenna element 4 is built in the antenna top 7, so that the antenna top becomes large. Top 7
Is a part whose cross-sectional area changes extremely small compared to the antenna top 7, and is a part having the lowest strength. For this reason, when the user inadvertently drops the portable wireless device or hits the antenna top 7, the load applied to the root of the antenna top 7 increases, and the antenna top 7 is damaged from the narrow root. There was a problem.

The present invention has been conceived in order to solve such a conventional problem. In order to improve antenna performance, a coil-shaped antenna element is built in the antenna top, and even if the antenna top becomes large, It is an object of the present invention to provide a portable wireless device configured to prevent the antenna top from being damaged from the root when dropped or hit.

[0008]

According to the first aspect of the present invention, when an antenna having an antenna top is pulled out and accommodated in a recess of a housing, and the antenna is housed in the recess of the housing, In the recess of the housing, the base of the antenna top is housed in a fitted state, and a portion other than the base of the antenna top is configured to protrude from the recess of the housing. A part of the bottom surface of the recess of the housing for receiving the base is formed so as to protrude to the side of the housing, and around the bottom surface protruding to the side of the housing.
Protective storage for receiving the base of the antenna top
The wall has a cutout shape .

According to a second aspect of the present invention, an antenna having an antenna top in which a coil-shaped antenna element is covered with a cap is pulled out and accommodated in a recess of a housing, and the antenna is housed in a recess of the housing. In doing so, the base of the antenna top is housed in the recess of the housing in a fitted state, and the portion incorporating the coiled antenna element other than the base of the antenna top projects from the recess of the housing. And at least a part of the bottom surface of the recess of the housing that receives the base of the antenna top is formed to protrude to the side of the housing, and the bottom portion protruded to the side of the housing is formed .
Protective storage around the base of the above antenna top
It is a shape in which the wall surface to be a part is cut out .

[0010]

Therefore, according to the first aspect of the present invention,
When the antenna is stored in the recess of the housing, the base of the antenna top is housed in the recess of the housing, which is the protection storage part, so that even if an impact is applied to the antenna top, In the recess of the housing. Since a part of the bottom surface of the recess of the housing that receives the base end of the antenna top is formed to protrude to the side of the housing,
In particular, even when the space for providing the protective storage section cannot be secured in a direction orthogonal to the axial direction of the antenna, that is, in the width direction or the thickness direction of the housing, the protective storage section can be formed.

According to the second aspect of the present invention, in addition to the function of the first aspect of the present invention, the above-mentioned holder is provided for a portion including a coiled antenna element other than the base of the antenna top. Since the projection is made to protrude from the recess of the housing, the same antenna performance as that of the conventional example in which all the antenna tops protrude from the housing can be obtained.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

A first embodiment of the present invention will be described.
1 and 2 show an embodiment of the portable wireless device of the present invention. FIG. 1 is a schematic perspective view, and FIG. 2 is a sectional view of a main part.

This embodiment differs from the conventional example in that the antenna top is provided with a structure for protecting the antenna top from being damaged when an impact is applied thereto. Since the configuration is the same as that of the conventional example, the same portions are denoted by the same reference numerals, and the description thereof will be omitted.

As shown in FIGS. 1 and 2, protection for housing the base of the antenna top 7 of the antenna 2 in a fitted state on the outer periphery of the recess 10 for housing the flange 14 of the holder 11 in the housing 1. The storage section 13 is formed in a ring shape and integrally protrudes therefrom.

In the above configuration, the operation when the antenna is housed will be described below. When the antenna 2 is housed in the housing 1, the base of the antenna top 7 protruding from the housing 1 is housed in the protective housing 13 of the housing 1 in a fitted state. As a result, even if a lateral or oblique impact is applied to the antenna top 7, the outer peripheral surface of the antenna top 7 immediately comes into contact with the inner peripheral surface of the protective storage portion 13, where the impact is received, and the antenna top 7 is received. The load on the narrow part of the root of the part can be minimized. Therefore, it is possible to prevent the antenna top 7 from being damaged from the narrow portion at the root.

Next, a second embodiment of the present invention will be described. FIG. 3 is a schematic perspective view showing a second embodiment of the portable wireless device of the present invention.

In the portable device of this embodiment, as shown in FIG. 3, a protective storage portion 13 for storing the base of the antenna top 7 in a fitted state is formed by recessing into the housing 1. As in the first embodiment, the base of the antenna top 7 can be stored in a fitted state to protect it from impact.

Furthermore, since a part of the bottom surface of the concave portion 10 of the housing 1 for receiving the base end of the antenna top 7 is formed to protrude to the side of the housing 1, it is particularly orthogonal to the axial direction of the antenna 2. Even when the space for providing the protection storage portion 13 cannot be secured in the direction in which the housing 1 is provided, that is, in the width direction or the thickness direction of the housing 1, the protection storage portion 13 can be formed.

[0020]

In particular, as described in the second embodiment shown in FIG. 3, according to the first aspect of the present invention, when the antenna is housed in the housing, the coiled antenna element is used. The base of the antenna top with the built-in is housed in the recess of the housing, which is the housing for protection of the housing, so that even if an impact is applied to the antenna top, it should be received in the housing recess Can be. Therefore, it is possible to protect the antenna top from impact and prevent the antenna top from being damaged.

Further, since a part of the bottom surface of the concave portion of the housing for receiving the base end of the antenna top is formed so as to protrude to the side of the housing, particularly in a direction orthogonal to the axial direction of the antenna, that is, Even when the space for providing the protective storage section cannot be secured in the width direction or the thickness direction of the housing, the protective storage section can be formed.

In particular, in the case where only the bottom surface of the recess for receiving the base of the antenna top projects laterally from the housing in a direction perpendicular to the axial direction of the antenna, a part of the ring of the protective storage portion is cut off. Because it has a chipped shape and does not have a thin part at the part protruding from the housing, it protrudes from the housing even if the part protruding from the housing collides with the floor etc. due to inadvertent drop There is an advantage that the damaged portion is not easily damaged.

Further, according to the invention described in claim 2,
In addition to the effect of the first aspect of the present invention, the portion including the coiled antenna element other than the base of the antenna top is protruded into the air from the recess of the housing, so that all of the antenna top is removed from the housing. There is an effect that the same antenna performance for transmission and reception as when protruding is obtained.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing a first embodiment of a portable wireless device of the present invention;

FIG. 2 is a cross-sectional view showing a cross section of a main part of the portable wireless device of the present invention;

FIG. 3 is a schematic perspective view showing a second embodiment of the portable wireless device of the present invention;

FIG. 4 is a schematic perspective view showing an example of a conventional portable wireless device;

FIG. 5 is a cross-sectional view showing a cross section of a main part of a conventional portable wireless device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Case of radio | wireless apparatus 2 Antenna 3 Rod-shaped antenna element 4 Coil-shaped antenna element 5 Cover 6 Cap 7 Antenna top 9 Hole 10 Depression 11 Holder 13 Protection storage part 14 Flange part

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-3-154405 (JP, A) JP-A-4-172802 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H01Q 1/24 H01Q 1/08 H01Q 1/42 H04M 1/02

Claims (2)

(57) [Claims] An antenna having an antenna top is supported so as to be drawn out and housed in a recess of a housing. When the antenna is housed in the recess of the housing, a base of the antenna top is placed in the recess of the housing. were housed in a fitted state, the parts other than the base of the antenna top with a configuration as to protrude from the recess of the housing, the housing bottom part of the recess receiving at least a group of said antenna top Is formed to protrude to the side of the housing, and the bottom part protrudes to the side of the housing
Around the base of the above antenna top for protection.
A portable wireless device characterized in that a wall serving as a housing is cut out . 2. An antenna having an antenna top in which a coil-shaped antenna element is covered with a cap is pulled out and accommodated in a recess of the housing, and when the antenna is housed in the recess of the housing, the antenna is mounted on the housing. In the recess, the base of the antenna top is housed in a fitted state, and a portion incorporating a coiled antenna element other than the base of the antenna top is configured to protrude from the recess of the housing, and at least the A part of the bottom surface of the recess of the housing for receiving the base of the antenna top is formed so as to protrude to the side of the housing,
Around the bottom protruding to the side of the antenna
Cut-out wall that serves as a protective storage for the base of the pump
A portable wireless device having a shape .