JP2000286619A - Portable telephone set - Google Patents

Abstract

PROBLEM TO BE SOLVED: To incorporate an antenna nut and an antenna tube into a portable telephone set independently of each other and to improve the workability for incorporating an antenna into of the telephone set by forming a groove into which the lower end of the antenna tube is fit within a casing, forming a pro truded displacement prevention rib in the groove and fitting the lower end of the antenna tube into the groove after deforming the lower end. SOLUTION: An antenna tube housing groove 12 is formed along the side wall of a casing, and a displacement prevention rib 13 is protruded from the side wall of the groove 12 like an eaves at the lower end of the groove 12. Then an antenna tube 3 is entirely fit into the groove 12 and also passed through the rib 13 while the lower end of the tube 3 is deformed. Thus, the tube 3 is fit into the groove 3. In such a way, an antenna nut and the tube 3 can be attached to the casing independently of each other and furthermore it is not required to displace the tube 3 in its axial direction when the tube 3 is fixed to the casing. Thereby the workability is improved for incorporating an antenna into a portable telephone set.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable telephone, and more particularly to an improvement in a structure for storing an antenna.

[0002]

2. Description of the Related Art Generally, a portable communication device such as a cellular phone is provided with a telescopic antenna, and an antenna for guiding the antenna element in and out of the housing and housing the antenna element is provided. A tube is provided.

FIG. 4 shows a state in which the back cover of the mobile phone 1 is removed,
The relation between the housing 2 and the antenna tube 3 is shown.

[0004] An antenna holder 4 is formed in the upper part of the rear surface of the housing 2 by swelling. An antenna element 5 is supported by the antenna holder 4 and slidably penetrates the antenna holder 4. The antenna tube 3 is a bendable resin pipe, and the upper end thereof is the antenna holder 4.
And the lower end is supported by the lower part of the housing 2.

FIG. 5 is an enlarged view of a portion C in FIG. 4, and a tube stopper 7 is formed at a lower portion of the housing 2.
Is provided with an engagement projection 8 fitted to the antenna tube 3. The antenna tube 3 comes into contact with the tube stopper 7 and is fitted with the engaging projection 8, so that the lower end of the antenna tube 3 is restricted from moving in the axial direction and the radial direction.

Referring to FIG. 6, the assembly of the antenna tube 3 will be described.

The upper end of the antenna tube 3 is inserted and fitted into an antenna nut 10 fitted in the antenna holder 4 (FIG. 6A). The antenna tube 3 to which the antenna nut 10 is attached is inserted from the lower end side into a partition wall 11 formed in the middle of the housing, and the lower end of the antenna tube 3 is fitted to the engaging projection 8 (FIG. 6B). ). Finally, the upper half of the antenna tube 3 is bent, and the antenna nut 10 is fitted to the antenna holder 4 to complete the mounting (FIGS. 6C and 6D).

FIG. 7 shows another conventional example, in which an engaging hole 9 is formed instead of the engaging projection 8.
The lower end of the antenna tube 3 is fitted into the engagement hole 9.

[0009]

In the above-mentioned conventional antenna housing structure, the antenna nut 10 is mounted on the housing 2 with the antenna nut 10 attached to the antenna tube 3, so that the workability is poor.

The present invention has been made in view of the above circumstances, and aims to improve workability by enabling the antenna nut and the antenna tube to be individually incorporated into a mobile phone.

[0011]

According to the present invention, an antenna tube for guiding an antenna element in and out is provided in a housing, and a groove for fitting at least a lower end of the antenna tube is formed in the housing. The present invention relates to a mobile phone in which a rib for preventing disengagement is protruded, and a lower end of the antenna tube is deformed and fitted into the groove.

[0012]

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

FIG. 1 is a view corresponding to a portion C in FIG. 4, in which an antenna tube housing groove 12 is formed along the side wall of the housing 2.
At the lower end of the antenna tube housing groove 12, a detachment prevention rib 13 projects from the side wall of the antenna tube housing groove 12 like an eaves. The gap between the tip of the detachment prevention rib 13 and the side wall of the antenna tube housing groove 12 facing the outside is made smaller than the outer diameter of the antenna tube 3. As the material of the antenna tube 3, a material having elasticity enough to restore even if crushed is used. For example, an elastomer or the like can be used.

When the antenna tube 3 is housed in the antenna tube housing groove 12, FIG.
As shown in (A), when the entirety of the antenna tube 3 is fitted into the antenna tube storage groove 12, the lower end of the antenna tube 3 is deformed at the same time as the antenna tube 3 is passed through the disengagement prevention rib 13. 12 is fitted. After the fitting, due to the elasticity of the antenna tube 3, the lower end of the antenna tube 3 is restored to a columnar shape and does not come off from the antenna tube storage groove 12 (FIG. 2B).

Referring to FIG. 3, the assembly of the antenna tube 3 will be described.

First, an antenna nut 10 is attached to the antenna holder 4 (FIG. 3A).

The antenna tube 3 is inserted into the partition 11 and the upper end is fitted to the antenna nut 10 (FIG. 3).
(B)).

Next, the lower end of the antenna tube 3 is deformed so as to pass through the detachment preventing rib 13 and fit into the antenna tube housing groove 12 (FIG. 3C, FIG. 3).
(D)).

In the above embodiment, the antenna tube housing groove 12 may have such a length that only the lower end of the antenna tube 3 is fitted.

[0020]

As described above, according to the present invention, the antenna nut and the antenna tube can be individually mounted on the housing, and the antenna tube needs to be displaced in the axial direction by fixing the antenna tube to the housing. Therefore, the excellent effect that workability is good is exhibited.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a main part of an embodiment of the present invention, in which (A) shows a state before the antenna tube is mounted, and (B) shows a state after the antenna tube is mounted.

FIG. 2A is a view taken in the direction of arrow A in FIG. 1A, and FIG.
FIG. 2 is a view on arrow B in FIG.

FIGS. 3 (A), (B), (C) and (D) are explanatory views showing a procedure for mounting an antenna tube in the embodiment of the present invention.

FIG. 4 is a perspective view showing a relationship between a housing of the mobile phone and an antenna tube.

FIG. 5 is a perspective view of a portion C of FIG. 4 showing a conventional example.

FIGS. 6 (A), (B), (C) and (D) are explanatory views showing a procedure for mounting an antenna tube in a conventional example.

FIG. 7 is a perspective view of a part C of FIG. 4 showing another conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cellular phone 2 Case 3 Antenna tube 10 Antenna nut 13 Detachment prevention rib

Claims (1)

[Claims] 1. An antenna tube for guiding an antenna element in and out is provided in a housing, a groove in which at least a lower end of the antenna tube is fitted is formed in the housing, and a disengagement prevention rib is projected from the groove. A mobile phone, wherein a lower end of the antenna tube is deformed and fitted into the groove.