JPH11154812A - Antenna attaching structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily manufacture and attach and to reduce manufacturing cost, and to enhance the latitude in the design of a shape of a case. SOLUTION: An antenna holder 21 slidably holding an antenna 16 is directly fitted to a case 1 for easily attachment of the antenna 16 to the case 1. An antenna unit 22 is penetrated through the outside of the case 1, and a nut 26 is threaded to a thread part 23 of the antenna holder 21 from the inside of the case 1. The antenna unit 22 is fixed directly to the case 1 by turning a head 24 to allow the head 24 and the nut 26 to clamp an inner flange 4 of the case 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an antenna mounting structure for a portable communication device such as a portable telephone.

[0002]

2. Description of the Related Art In recent years, portable communication devices such as portable telephones have rapidly become widespread as communication means especially for young people. Such portable communication devices generally have an antenna as a receiving means.

A conventional antenna mounting structure will be described with reference to FIG.

In FIG. 1, reference numeral 1 denotes a case made of a synthetic resin. A cylindrical boss 2 is formed at a predetermined position of the case 1, and an inner flange 4 having a through hole 3 is formed inside the boss 2. Have been. A cylindrical nut 5 can be pressed into the boss portion 2 from the inside of the case 1, and the nut 5 has a female screw 6 engraved on the inner surface thereof. A cylindrical antenna housing 7 is fixed.

The antenna 8 includes an antenna top 9 and a rod-shaped element portion 10 connected to the antenna top 9. The element portion 10 penetrates the antenna holder 11 and is housed in the antenna housing 7. Has become.

The antenna holder 11 includes a screw portion 12 screwed to the female screw 6 and a flange-like head portion 13 formed continuously with the screw portion 12, and the head portion 13 has a slit. A groove 14 is engraved.

[0007] The nut 5 is press-fitted and fixed to the boss portion 2, and a driver is engaged with the slit groove 14. The antenna holder 11 is rotated by the driver and screwed into the nut 5, and the antenna holder 11 is
Is attached to the case 1 via The antenna 8 is slidably held by the antenna holder 11.

[0008]

In the above-described conventional antenna mounting structure, the nut 5 is fixed to the case 1 by press-fitting the nut 5 into the boss portion 2, so that the outer diameter of the nut 5 and the boss It is necessary to increase the dimensional accuracy of the inner diameter of the part 2, which requires time and effort to manufacture and increases the manufacturing cost. Also, it is not easy to press-fit the nut 5 accurately, and the workability is poor, and the case 1 may be cracked or the nut 5 may be inclined, resulting in a problem in productivity. Further, since it is necessary to secure a space of a specified size for press-fitting the nut 5 in the case 1, there is a problem that the design of the shape of the case 1 is restricted.

The present invention has been made in view of the above circumstances, and has been made to facilitate manufacturing and mounting, reduce manufacturing costs, and increase the degree of freedom in designing the shape of a case.

[0010]

SUMMARY OF THE INVENTION The present invention relates to an antenna mounting structure in which an antenna holder for slidably holding an antenna is directly fixed to a case. The present invention also relates to an antenna holder and a nut to which the antenna holder is screwed. The present invention relates to an antenna mounting structure for holding a case, wherein a flange-shaped head is formed at one end of the antenna holder, and a locking portion is projected at the other end, and the case is held between the locking portion and the head. An antenna mounting structure in which a projection is provided on the locking portion, and the projection is fitted into a recess provided on the inner surface of the case, whereby the antenna holder is fixed to the case. In addition, the present invention relates to an antenna mounting structure in which the antenna holder is screwed to the case,
The antenna holder which slidably holds the antenna is directly fixed to the case.

[0011]

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

First, referring to FIG. 1 to FIG.
An embodiment will be described. 1 to 4, the same components as those in FIG. 8 are denoted by the same reference numerals, and description thereof will be omitted.

The antenna 16 includes a rod-shaped element portion 17 and an antenna top 18 fitted to one end of the element portion 17. A slightly thicker sleeve 19 is fitted to an end of the element portion 17 on the antenna top 18 side, and a slightly thicker stopper 20 is fitted to the other end.

The antenna 16 is connected to the element 17
Are slidably held by an antenna holder 21 via the antenna unit 22 to form an antenna unit 22. The antenna holder 21 includes a screw portion 23 on which a screw is engraved, and the screw portion 23.
The head 24 is formed with a flange-shaped head 24 which is formed continuously.
The antenna holder 21 can be screwed to a nut 26.

The nut 26 is provided on its outer surface with a collar 27 for stopping rotation.
And an elongated, bottomed cylindrical antenna housing tube 28 is fixed to one end.

Hereinafter, the procedure for mounting the antenna 16 will be described.

The antenna unit 22 is penetrated from the outside of the case 1, and the nut 26 is screwed into the screw portion 23 from the inside of the case 1. Turn the head 24,
The antenna unit 22 is directly fixed to the case 1 by holding the inner flange 4 between the head 24 and the nut 26.

Next, FIGS. 5 and 6 show a second embodiment of the present invention.
An embodiment will be described. 5 and 6, the same components as those in FIGS. 1 to 4 are denoted by the same reference numerals, and description thereof will be omitted.

In the figure, reference numeral 29 denotes an antenna holder. The antenna holder 29 has a cylindrical head part 30 formed at one end of a cylindrical holder part 30. On the outer surface of the other end of the holder portion 30, two locking portions 32 project symmetrically, and each face 3 of the locking portion 32 facing the head 31 is formed.
3 are provided with hemispherical projections 34, respectively.
The head 31 has a slit groove 35 into which a driver can be engaged.

A hole 37 is formed at a required position of the case 36. The hole 37 has a keyhole shape so that the holder 30 can be inserted therethrough. The axial length of the hole 37 is substantially equal to the distance between the head 31 of the antenna holder 29 and the surface 33 of the locking portion 32 facing the head 31. Two recesses 38 are formed around the hole 37 on the inner surface of the case 36, and the projections 34 can be fitted into the recesses 38.

Hereinafter, the procedure for mounting the antenna 16 will be described.

After the holder 30 is positioned with respect to the hole 37, the antenna holder 29 in which the antenna 16 is slidably held is inserted through the hole 37.
While the head 31 is in contact with the outer surface of the case 36,
The antenna holder 29 is rotated. The projection 34 fits into the recess 38, and the antenna holder 29 is stopped. Thus, a part of the case 36 is sandwiched between the head 31 and the locking portion 32, and the antenna holder 2
9 is directly fixed to the case 36 alone.

In the second embodiment, the antenna holder 29 is prevented from turning by fitting the projection 34 into the recess 38. A tapered surface may be formed along the hole 37 so that the antenna holder 29 is stopped.

Next, a third embodiment of the present invention will be described with reference to FIG. In FIG. 7, the same components as those in FIGS.

In the drawing, reference numeral 39 denotes an antenna holder. The antenna holder 39 has a cylindrical head part 40 and a flange-shaped head 41 formed at one end. A male screw 42 is engraved on the outer periphery of the holder portion 40, and the head portion 41 is formed.
Is provided with a slit groove 43 with which a driver can be engaged.

A hole 45 is formed at a predetermined position of the case 44, and the inner surface of the hole 45 is threaded so that the holder part 40 can be screwed therein.

The procedure for mounting the antenna 16 will be described below.

A driver is engaged with the slit groove 43, the antenna holder 39 is rotated by the driver, the holder portion 40 is screwed into the hole 45, and the antenna 16 is slidably held. The antenna holder 39 is directly fixed to the case 44.

[0029]

As described above, according to the present invention, the nut is not pressed into the boss, and it is not necessary to increase the dimensional accuracy of the outer diameter of the nut and the inner diameter of the boss. Production costs can be reduced. Further, since the antenna holder is directly fixed to the case, it is easy to mount the antenna on the case. Furthermore, since the antenna holder is directly fixed to the case, there is no need to secure the installation space for the nut in the case, and various excellent effects such as greater freedom in designing the shape of the case are exhibited. I do.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a first embodiment of the present invention.

FIG. 2 is a plan view showing the antenna unit according to the first embodiment of the present invention.

FIG. 3 is a plan view showing a nut and an antenna housing cylinder according to the first embodiment of the present invention.

FIG. 4 is a plan view showing a state in which the antenna is attached to a case in the first embodiment of the present invention.

FIG. 5 is a sectional view showing a second embodiment of the present invention.

FIG. 6 is an exploded perspective view showing a second embodiment of the present invention.

FIG. 7 is a sectional view showing a third embodiment of the present invention.

FIG. 8 is a sectional view showing a conventional example.

[Explanation of symbols]

 16 Antenna 17 Element Part 18 Antenna Top 21 Antenna Holder 26 Nut 29 Antenna Holder 39 Antenna Holder

Claims (5)

[Claims] An antenna mounting structure wherein an antenna holder for slidably holding an antenna is directly fixed to a case. 2. The antenna mounting structure according to claim 1, wherein a case is held between said antenna holder and a nut into which said antenna holder is screwed. 3. The antenna according to claim 1, wherein a flange-like head is formed at one end of the antenna holder, and a locking portion is projected from the other end, and a case is sandwiched between the locking portion and the head. Mounting structure. 4. The antenna mounting according to claim 3, wherein a projection is provided on the locking portion, and the projection is fitted into a recess provided on the inner surface of the case, whereby the antenna holder is fixed to the case. Construction. 5. The antenna mounting structure according to claim 1, wherein said antenna holder is screwed to said case.