JPH07322339A - Portable electronic appliance case - Google Patents

Abstract

PURPOSE:To omit a fixing means by fixing an antenna with a case itself in a portable electronic appliance provided with a drawer type antenna. CONSTITUTION:In this case of the portable electronic appliance provided with the drawer type antenna, the cross-sectional shape of the antenna housing part is formed by a vertical wall surface 16a, a circular arc part 16b continuing to the upper end of the wall surface and a skirt part 16c continuing to the circular arc part and further smoothly continuing to a flat surface. The antenna 1 is housed along the wall surface and the circular arc part, the antenna 1 is in contact with the wall surface and the circular arc part and movement in a direction vertical to an axial center is suppressed by the wall surface and the circular arc part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a case of a portable electronic device having a pull-out antenna.

[0002]

2. Description of the Related Art In a portable electronic device such as a portable radiotelephone shown in FIG. 4, an antenna 1 is usually of a retractable type, and the antenna is housed in a device body 2 when carrying and withdrawn when used. Therefore, in the conventional portable electronic device, a space for housing the antenna 1 is secured inside the device, and a part of the case is formed to be suitable for housing the antenna 1. In the figure,
Reference numeral 13 denotes a removable battery pack.

A conventional pull-out type antenna device will be described with reference to FIG.

Incidentally, the conventional example shows an example having a splash-proof and dust-proof structure.

A ring seat 4 is provided on the upper surface of the electronic device case 3, and a conductive cylindrical antenna holder 5 is mounted on the ring seat 4.
And the upper end of the antenna holder 5 projects upward from the electronic device case 3. A frustoconical antenna cover 6 is fitted on the upper end of the antenna holder 5, and the antenna cover 6 is made of an elastic material such as rubber or synthetic resin.

A wire-shaped electrode element 8 is slidably inserted into the antenna holder 5, and the electrode element 8
The head portion 9 formed on the upper part is projected, and the flange 10 is formed on the lower end to prevent the electrode element 8 from coming off. The antenna holder 5 has a loading coil 1
1 is connected, and the electrode element 8 is connected to a transmission / reception circuit section (not shown) via the antenna holder 5 and the loading coil 11. The loading coil 11 and the transmitting / receiving circuit section are connected by a coaxial cable 30.

An upper end of a storage pipe 12 made of an insulating material is fitted to the lower end of the antenna holder 5 to store the electrode element 8 and a plug 7 is attached to the lower end of the storage pipe 12.
Is inserted and the lower end of the storage pipe 12 is sealed. Thus, the antenna holder 5 and the storage pipe 12 block the inside and outside of the main body, so that water droplets and dust can be prevented from entering from the mounting portion of the electrode element 8.

Next, referring to FIG. 6, the case shape of the antenna 1 housing portion will be described.

The space for accommodating the antenna 1 is ensured by effectively utilizing the space inside the device body 2 by bulging the case of the device body 2 into the battery pack 13 to form the antenna accommodating portion 2a. To be done.

The antenna housing portion 2a must house the antenna 1 and the coaxial cable 30. Further, the antenna housing portion 2a is considered to have a shape that does not press the battery pack 13, and as shown in the figure, the cross sectional shape of the antenna housing portion 2a is a bilaterally symmetric mountain shape with a wide hem. The antenna 1 is housed in the center of the antenna housing 2a, and the coaxial cable 30 is housed in the skirt.

[0011]

In the above-mentioned drawer type antenna device accommodating structure, since the antenna accommodating portion 2a has a mountain shape and one of the skirts has a gap, the antenna accommodating portion 2a itself has the attitude of the antenna 1. There is no fixing function, and in order to prevent the antenna 1 from sticking in the antenna housing portion 2a, a separate fixing means had to be provided.

Therefore, there has been a problem that the number of parts is increased, and the work process and the work man-hour are increased.

In view of the above situation, the present invention is a portable electronic device equipped with a pull-out antenna, in which the antenna is fixed by the case itself.

[0014]

SUMMARY OF THE INVENTION The present invention provides a case of a portable electronic device equipped with a pull-out antenna, wherein an antenna housing portion has a wall surface with a vertical cross section.
It is characterized in that it is formed by an arcuate portion which is continuous with the upper end of the wall surface and a skirt portion which is continuous with the arcuate portion and is smoothly continuous with a flat surface.

[0015]

In the state where the antenna 1 is housed, the antenna is housed along the wall surface and the arc portion, and the coaxial cable is housed in the space formed by the antenna and the skirt portion.
The antenna comes into contact with the wall surface and the arc portion, and the wall surface and the arc portion prevent movement in a direction perpendicular to the axis.

[0016]

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

FIG. 1 is a perspective view showing the portable telephone main body 15 with the battery pack removed, and the mountain-shaped protruding portion of the case of the portable telephone main body 15 is the antenna housing portion 16. Further, the mobile phone main body 15 itself and the drawer type antenna device shown in FIG. 2 have a splash-proof structure.

First, the drawer type antenna device shown in FIG. 2 will be described.

A boss 17 extending upward is formed on the rear side of the upper part of the main body case, and a screw seat 18 is airtightly fitted to the upper end of the boss 17. The screw seat 18 is a short tube and has a screw carved on the inner surface.

The antenna holder 19 is screwed onto the screw seat 18. The antenna holder 19 has a flange portion on the upper portion and a guide tube portion on the lower portion. A screw that engages with the screw seat 18 is engraved on the base of the guide tube portion, an O-ring 20 for sealing is embedded on the inner surface of the flange portion, and a concave curved surface is formed on the upper surface of the antenna holder 19. Are formed. The upper end of the storage pipe 21 is fitted to the guide tube portion of the antenna holder 19.

An electrode element 23 extending downward from the antenna top 22 is closely covered with an insulating tube 24, and a slide flange 25 is provided at the lower end of the electrode element 23.
Is stuck. As shown in FIG. 3, the slide flange 25 has a flat shape, a long diameter part slidably fitted in the storage pipe 21, and a short diameter part in the storage pipe 21.
To form a gap between and.

The lower surface of the antenna top 22 is a convex curved surface that matches the concave curved surface of the antenna holder 19.

The antenna housing 1 of the mobile phone body 15
A recess 28 into which the lower end of the storage pipe 21 is fitted is formed at the lower end of 6, and a drain hole 29 is formed in the recess 28. Reference numeral 30 in the figure denotes a coaxial cable that connects the matching circuit of the antenna and the wireless circuit board of the mobile phone body 15.

The cross-sectional shape of the antenna housing portion 16 is shown in FIG.
Shown in.

The antenna housing 16 has a vertical wall 16
a, a circular arc portion 16b which is continuous with the upper end of the wall surface 16a, and a skirt portion 16c which is continuous with the circular arc portion 16b and has a smooth flat surface.

The antenna 1 and the coaxial cable 30 are housed in the antenna housing section 16. When the antenna 1 is stored, the storage pipe 21 is attached to the wall surface 16
a, the coaxial cable 3 is fitted along the arc portion 16b.
0 is stored in the space formed by the antenna 1 and the skirt portion 16c.

As described above, the electrode element 23, the antenna holder 19, the insulating tube 24, and the storage pipe 21.
Etc. are unitized and incorporated in the mobile phone main body 15.

The storage pipe 21 inserted from the screw seat 18 is stored in the antenna storage portion 16 of the mobile phone body 15. The antenna holder 19 is screwed onto the screw seat 18 to attach the unit to the mobile phone body 15. In this mounted state, the lower end of the storage pipe 21 is fitted in the recess 28, and the inside of the storage pipe 21 is the drain hole 2.
It communicates with the outside of the mobile phone body 15 via 9. Furthermore, in a state where the antenna holder 19 is screwed onto the screw seat 18,
The upper end surface of the screw seat 18 and the lower surface of the antenna holder 19 are in close contact with each other. Also, as shown in FIG. 2, the coaxial cable 30 is bent between the antenna housing portions 16,
It is guided inside the mobile phone body 15 and connected to a wireless circuit board (not shown). Thus, the unitized antenna is attached to the inside of the mobile phone body 15 in a splash-proof manner.

Further, the antenna 1 has an antenna housing portion 16
When stored in the antenna 1, the storage pipe 21 of the antenna 1 is in contact with the wall surface 16a and the arc portion 16b,
The wall surface 16a and the arc portion 16b prevent the movement in the direction perpendicular to the axis, and there is no need to provide a separate fixing means. Further, the storage space for the antenna 1 and the coaxial cable 30 is minimized, and the space is effectively used.

Although some rainwater may enter the storage pipe 21 when the electrode element 23 is pulled out, the rainwater that has entered the storage pipe 21 leaks out through the drain hole 29. As described above, the mobile phone main body 15 itself has a splash-proof structure, and even if some rainwater leaks into the gap between the mobile phone main body 15 and the battery pack (not shown), there is no problem.
Further, it goes without saying that the attachment of the mobile phone main body 15 and the battery pack has a drainage structure in which leaked rainwater is further leaked out of the mobile phone main body.

[0031]

As described above, according to the present invention, since the movement of the pull-out antenna is suppressed by the antenna housing portion itself, the fixing means for the antenna is not required, the number of parts and man-hours are reduced, and the cost is reduced. It is effective in reducing the size, reducing wasted space, and reducing the size.

[Brief description of drawings]

FIG. 1 is a perspective view of a portable electronic device case provided with a drawer-type antenna device according to the present invention.

FIG. 2 is a view on arrow AA of FIG.

FIG. 3 is an enlarged view of a part as viewed from the direction of arrow B in FIG.

FIG. 4 is a rear perspective view of a conventional example.

FIG. 5 is a sectional view of an antenna of the prior art example.

FIG. 6 is a sectional view of the prior art example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Antenna 15 Mobile phone main body 16 Antenna storage part 16a Wall surface 16b Arc part 16c Bottom part 21 Storage pipe 22 Antenna top 23 Electrode element 25 Slide flange 28 Recess 29 Water drainage hole

 ─────────────────────────────────────────────────── (72) Inventor Takeshi Sato 3-14-20 Higashi-Nakano, Nakano-ku, Tokyo Kokusai Electric Co., Ltd. (72) Ryuichi Takahashi 3-14-20 Higashi-Nakano, Nakano-ku, Tokyo Kokusai Electric Within the corporation

Claims (1)

[Claims] 1. A case of a portable electronic device equipped with a pull-out type antenna, wherein the antenna housing portion has a wall surface having a vertical sectional shape of the antenna housing portion, an arc portion continuous with an upper end of the wall surface, and the arc portion. A portable electronic device case characterized by being formed by a skirt portion which is continuous and which is smoothly continuous on a flat surface.