JP3130900B2 - 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, since the coil-shaped antenna element 4 is built in the antenna top 7, the antenna top 7 protruding from the housing 1 becomes large. The root of the antenna top 7 is a part whose cross-sectional area changes extremely small as compared with 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 a narrow portion of the root. There was the first problem.

On the other hand, the structure of the holder supporting the antenna is fixed to the housing with screws, but the screws are gradually loosened due to the elapse of use time and individual differences in the use method. There is a second problem that the screw portion of the holder may come off from the fixing screw and the antenna may fall off the housing together with the holder.

Further, in order to solve the above problem, there is a third problem that it is necessary to ensure ease of use such that the antenna can be easily pulled out and stored.

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, The first object of the present invention is to prevent the antenna top from being damaged from the root when the antenna is dropped or hit. The second purpose is to allow the user to visually recognize the abnormal condition that the screw has been loosened before the screw part of the holder is detached from the fixing screw, and the antenna top is used with only light force. A third object is to provide a portable wireless device that can be easily pulled out and stored.

[0010]

In order to achieve the above object, the invention according to claim 1 is directed to an antenna having an antenna having an antenna top and a rod-like portion and a screw portion for fixing the antenna to a housing. And a recess for mounting the holder, a hole, and a fixing screw. The holder is fixed to the recess with a fixing screw, and the antenna is pulled out through the holder. A housing for supporting the holder so as to be freely housed, and a protection housing for housing the base of the antenna top of the antenna in a fitted state at the outer periphery of the recess of the housing for housing the holder in a ring-like manner. It is configured to be installed.

According to a second aspect of the present invention, an axial length of the antenna top of the antenna and the protective storage portion of the housing to be fitted is shorter than a screw length of the screw portion of the holder. According to the configuration, when the antenna is pulled out when the screw portion of the holder is loosened to just before the screw portion of the housing is disengaged from the fixing screw of the housing, the upper surface of the holder is configured to protrude from the protective storage portion of the housing. Things.

According to a third aspect of the present invention, there is provided an antenna having a rod-shaped antenna element, an antenna top having a coil-shaped antenna element covered with a cap at the tip of the rod-shaped antenna element, and a hole for accommodating the antenna. And a housing in which a protection storage portion is formed coaxially, the antenna is pulled out and stored in a hole of the housing so as to be housed, and the antenna top is provided on an outer peripheral surface of the antenna top and the housing. In a state in which there is a gap between the inner peripheral surfaces of the protective storage portion, the protective storage portion of the housing is pulled out and stored, and the antenna top is stored in the protective storage portion. When a force in a direction perpendicular to the axial direction is applied, the outer peripheral surface of the antenna top comes into contact with the inner peripheral surface of the protective storage portion of the housing.

According to a fourth aspect of the present invention, there is provided an antenna having a rod-shaped antenna element, an antenna top having a coil-shaped antenna element covered with a cap at the tip of the rod-shaped antenna element, and a hole for accommodating the antenna. And a housing formed with a protective housing portion coaxially, and the antenna is pulled out and stored in a hole of the housing so that the antenna top can be housed. For the antenna top, of the portion covered by the cap, A part which does not incorporate the coiled antenna element can be pulled out and stored in the protective storage part of the casing, and a part which incorporates the coiled antenna element projects from the protective storage part of the casing. In addition, in a state where there is a gap between the outer peripheral surface of the antenna top and the inner peripheral surface of the protective storage portion of the housing, the antenna top is supported so that it can be pulled out and stored in the protective storage portion of the housing. When a force in a direction perpendicular to the axial direction of the antenna is applied to the antenna in a state where the antenna top is stored in the protective storage portion, the outer peripheral surface of the antenna top contacts the inner peripheral surface of the protective storage portion of the housing. It is what was constituted.

[0014]

Therefore, according to the present invention, first, even if the user inadvertently drops the portable wireless device or hits the antenna top, even if the load applied to the root of the antenna top increases, immediately. Since the outer peripheral surface of the antenna top abuts the inner peripheral surface of the recess of the housing, the impact force and pressing force are received by the inner peripheral surface of the recess of the housing to prevent the antenna top from being damaged from the root. Can be.

In particular, according to the first and second aspects of the present invention, when the screw of the holder is loosened, the holder is provided for protecting the recess of the housing when the antenna is pulled out from the housing. Part is pulled upwards, the depth of the protective storage part becomes shallow, and just before the screw part of the holder comes off the fixing screw,
Since the upper surface of the holder projects from the upper end of the protection storage portion, the user can easily find that the screw is loose.

According to the third and fourth aspects of the present invention, when the base of the antenna top of the antenna is stored in the protection storage portion in the recess of the housing, the outer peripheral surface of the antenna top and the protection of the housing are protected. When the antenna is pulled out or stored, the outer peripheral surface of the antenna top and the inner peripheral surface of the protective storage portion of the housing are not rubbed. , Can be put in and out smoothly.

[0017]

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

First, a first embodiment of the present invention will be described. 1 and 2 show an embodiment of a portable wireless device according to 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 a shock 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 the fitted state on the outer periphery of the recess 10 for housing the flange 14 of the holder 11 in the housing 1. Storage section 13 is formed in a ring shape and integrally protrudes therefrom.

The operation of the above configuration 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 an impact is applied to the antenna top 7 in a horizontal or oblique direction, the outer peripheral surface of the antenna top 7 immediately comes into contact with the inner peripheral surface of the protective storage portion 13 and receives an impact there. The load on the narrow part of the root 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 wireless device according to the second embodiment of the present invention.

In this embodiment, as shown in FIG. 3, a protective housing 13 for housing the base of the antenna top 7 in a fitted state is formed by being recessed 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.

[0024]

As described above, according to the present invention, first, when the user inadvertently drops the portable radio device or hits the antenna top, the load applied to the root of the antenna top increases. Even so, the outer peripheral surface of the antenna top immediately contacts the inner peripheral surface of the protective storage part of the housing, so the impact force and pressing force are received by the inner peripheral surface of the recess of the housing, and the antenna top is There is an effect that breakage from a thin portion can be prevented.

According to the first and second aspects of the present invention, when the screw of the holder is loosened, when the antenna is pulled out of the housing, the holder is provided with the protective storage portion in the recess of the housing. Immediately before the screw is pulled upward and the screw comes off, the upper surface of the holder projects from the upper end of the protective storage portion, so that the user can easily find that the screw is loose.

According to the third aspect of the present invention, when the base of the antenna top of the antenna is housed in the concave portion of the recess of the housing, the outer peripheral surface of the antenna top and the inner peripheral surface of the recess of the housing are provided. When the antenna is pulled out or stored, the base portion of the antenna top and the inner peripheral surface of the recess of the housing can be smoothly taken in and out without rubbing.

According to the fourth aspect of the present invention, in addition to the effects of the first aspect of the present invention, in addition to the base of the antenna top, the holder having a built-in coiled antenna element other than the base of the antenna top is used. Since the projection is made to protrude from the recess of the provided housing, an effect is obtained that the antenna performance can be obtained as in the case where all the antenna tops protrude from the housing.

[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 front page (56) References JP-A-3-154405 (JP, A) JP-A-4-331501 (JP, A) JP-A-3-245603 (JP, A) JP-A-6-6121 (JP) JP-A-1-204504 (JP, A) JP-A-3-6303 (JP, U) JP-A-59-195807 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB Name) H01Q 1/24 H01Q 1/08 H01Q 1/10 H01Q 1/40

Claims (4)

(57) [Claims] 1. An antenna having an antenna top and a rod-shaped portion, a holder having a screw portion for fixing the antenna to a housing and slidably supporting the antenna, and a recess and a hole for fixing the holder. A housing for fixing the holder to the recess with a fixing screw, and supporting the antenna so that the antenna can be pulled out and stored through the holder. Around the place
A portable wireless device, wherein a protective storage portion for storing a base portion of an antenna top of an antenna in a fitted state is integrally provided in a ring shape. 2. The screw portion of the holder, wherein the length of the antenna top of the antenna and the protective housing of the housing in the axial direction to be fitted is shorter than the screw length of the screw portion of the holder. The upper surface of the holder is configured to protrude from the protective storage portion of the housing when the antenna is pulled out when the antenna is loosened to just before being disengaged from the fixing screw of the housing. A portable wireless device as described. 3. An antenna having a rod-shaped antenna element, an antenna top in which a coil-shaped antenna element is covered with a cap at the tip of the rod-shaped antenna element, a hole for accommodating the antenna, and a protective storage part. A housing formed coaxially, wherein the antenna is pulled out and stored in a hole of the housing so as to be housed, and the antenna top is provided on an outer peripheral surface of the antenna top and an inner circumference of a protective housing portion of the housing. In a state where there is a gap between the surfaces, the antenna top is supported so that it can be pulled out and stored in the protective storage part of the housing, and the antenna top is stored in the protective storage part in a direction perpendicular to the axial direction of the antenna. A portable wireless device characterized in that, when a force is applied, an outer peripheral surface of an antenna top comes into contact with an inner peripheral surface of a protective storage portion of a housing. 4. An antenna having a rod-shaped antenna element, an antenna top having a coil-shaped antenna element covered with a cap at the tip of the rod-shaped antenna element, a hole for accommodating the antenna, and a protective storage section. A housing formed coaxially, wherein the antenna is pulled out and accommodated in a hole of the housing, and the antenna top incorporates the coiled antenna element in a portion covered by a cap. Undrawn parts can be pulled out and stored in the protective storage section of the housing,
The portion containing the coiled antenna element is configured to protrude from the housing for protection of the housing, and a gap is formed between the outer peripheral surface of the antenna top and the inner periphery of the housing for protection of the housing. When the antenna top is stored in the protective storage portion so as to be retractably supported in a state where the antenna top is stored in the protective storage portion, an antenna is applied when a force is applied to the antenna in a direction orthogonal to the axial direction of the antenna. A portable wireless device, wherein an outer peripheral surface of a top is configured to contact an inner peripheral surface of a protective storage portion of a housing.