JPH11145712A - Antenna holding device and method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an antenna holding device which considers the recyclability of a communication device housing, without the use of a pressing or inserting molding process to the housing, when an antenna is mounted on the housing. SOLUTION: A screw parts 30 and a packing 31 are provided on the outer circumference of an antenna 20. Then a male screw 30a of the parts 30 and a female screw 32 of the packing 31 are fastened together. Thus, a rib 14 provided in the inner circumference surface of a barrel part 13, held between a crushed part 31c of the packing 31 and a flange part 30b of the parts 30. As a result, the antenna 20 is held freely slidably on a communication device housing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to communication equipment, and more particularly to a holding device and a holding method for slidably holding a linear antenna used in communication equipment.

[0002]

2. Description of the Related Art FIG. 5 is an external view showing an example of a communication device.
(A) shows the front side of the housing, and (b) shows the back side of the housing. FIG. 6 is an assembled perspective view for explaining a conventional holding device that slidably holds a linear antenna used in a communication device.

As shown in FIG. 5, for example, a telecommunication device has a tubular portion 13 formed in a telecommunication device housing 10 for accommodating a telescopic antenna 20 therein. As a method of holding the antenna 20 so as to be able to expand and contract inside the cylindrical portion 13, as shown in FIG. 6, an insert 12 having a female screw is press-fitted into the inner peripheral surface 11 of the cylindrical portion 13 or formed by insert molding. . After a screw component 30 having a male thread formed on a cylindrical outer peripheral surface is passed through the antenna 20, a stopper 21 is attached to a rear end of the antenna 20. After that, by fastening the insert 12 and the screw component 30, the antenna 20 is held in the tubular portion 13 so as to be able to expand and contract.

[0004] Further, the casing 10 is generally made of plastic, and the insert 12 is usually made of metal.

[0005]

However, the above-described prior art has the following problems.

The first problem is that if the press-fitting of the insert 12 or the molding of the insert fails, the entire casing 10 must be discarded, resulting in a large damage at the time of failure. The reason is that since the insert 12 is press-fitted or insert-molded, it is difficult to match the position of the cylindrical hole in the cylindrical portion 13 with the positional accuracy of the insert 12. This is because the housing 10 cannot be easily removed, and if it is forcibly removed, the housing 10 will be damaged.

[0007] The second problem is that productivity is poor. The reason is that there are many defects in press-fitting the insert 12, and in the case of insert molding, the insert 12 must be molded after the insert 12 is incorporated into the mold at the time of molding the housing 10, and the molding cycle is long. This is because of this.

[0008] The third problem is that it is difficult to recycle the housing of the communication device. The reason is that the casing 10 and the insert 12 are often made of different materials, and the insert 12 is press-fitted into the casing 10.
This is because they cannot be easily disassembled.

SUMMARY OF THE INVENTION In view of the above-mentioned circumstances of the prior art, an object of the present invention is to reduce the damage caused by a failure in assembling an antenna by preventing press-fitting or insert molding into a communication device housing. An object of the present invention is to provide a holding device and a holding method of a communication device antenna in consideration of recyclability of a body.

[0010]

In order to achieve the above object, an antenna holding device according to the present invention comprises a threaded component having a flange at one end of a cylindrical body having an external thread cut on an outer peripheral surface, and a female thread at one end. Are fixed coaxially, and the screw component and the elastic component are passed through such that the other end of the cylindrical component having the flange at the other end faces the other end of the screw component and the elastic component. And a linear antenna having a large-diameter portion larger than the cylindrical hole diameter of the screw component at both ends, and a communication device housing provided with the antenna to be able to store the antenna, and a rib formed on an inner peripheral surface. A cylindrical portion, a crushed portion formed in the elastic component by screwing a male screw of the screw component and a female screw of the elastic component, and a flange of the screw component to form a rib of the cylindrical portion. By sandwiching the antenna It is configured to slidably held by the communication device housing a.

In such a configuration, a rib is provided on the inner surface of the cylindrical portion for housing the antenna in the communication device housing. Also, a threaded part having a flange at one end of a cylindrical body having an external thread cut on the outer peripheral surface, and an elastic part of a cylindrical body having a female thread coaxially fixed at one end and a flange at the other end Are passed through the antenna with the other ends facing each other. Since both ends of the antenna are provided with large diameter portions larger than the cylindrical hole diameter of the screw component, the antenna does not fall off from the screw component and can slide on the screw component. Further, the elastic component together with the antenna is pushed into the cylindrical portion until the flange portion of the elastic component hits the rib, and the male screw of the screw component is screwed into the female screw of the elastic component.
Since the female screw is drawn toward the male screw side by this, a crushed portion protruding on the outer peripheral surface of the elastic component is formed,
Eventually, the rib on the inner surface of the cylindrical portion is sandwiched between the crushed portion and the flange portion of the screw component. Thereby, the screw component is fixed inside the cylindrical portion, and the antenna is slidably held in the housing.

According to the present invention, the antenna is held without press-fitting the insert into the housing as in the conventional example shown in FIG. 6 or integrally forming the insert with the housing, so that failure such as press-fitting is eliminated. Also, since the insert is not pressed into the housing,
The productivity is good, and the housing can be recycled.

The antenna holding method according to the present invention, which relates to the antenna holding device, includes a linear antenna, a communication device housing having a cylindrical portion having a rib formed on an inner circumferential surface, an outer circumferential surface. A threaded part having a flange at one end of a cylindrical body having a male thread cut off, an elastic part of a cylindrical body having a female thread coaxially fixed at one end and a flange at the other end, and the antenna A step of preparing a detachable portion at the leading end and the trailing end of the screw part, the step having a larger diameter than the cylindrical hole diameter of the screw part; and Passing the antenna through the antenna, passing the elastic component through the antenna such that the other ends of the screw component and the elastic component face each other, and fixing the large-diameter portions to the front and rear ends of the antenna, respectively. And before Pushing the elastic component into the tubular portion from one end side of the elastic component first, until the flange portion of the elastic component hits the rib, and screwing the male screw of the screw component and the female screw of the elastic member. A step in which the antenna is slidably held in the communication device housing by sandwiching the rib between a crushed portion formed in the elastic component and a flange portion of the screw component and the elastic component. Including.

In place of the above method, a linear antenna, a communication device housing having a cylindrical portion having a rib formed on the inner peripheral surface, and one end of a cylindrical member having an external thread cut on the outer peripheral surface are provided. A threaded component having a flange portion, an internal thread is coaxially fixed to one end side, and a cylindrical elastic component provided with a flange portion at the other end; and a detachable front end and a rear end of the antenna. Preparing a large diameter portion larger than the cylindrical hole diameter of the screw part, and loosening the male screw of the screw part and the female screw of the elastic part after the other ends of the screw part and the elastic part are opposed to each other. Tightening, and passing the fastened screw component and elastic component through the antenna such that the flange portion of the screw component is on the upper end side of the antenna; and Step for fixing the large diameter portion Pushing the elastic component into which the screw component is loosely screwed into the tubular portion from one end side of the elastic component first until the flange portion of the elastic component hits the rib; and The antenna is inserted into the communication device housing by sandwiching the rib between a crushed portion formed in the elastic component by tightening a male screw and a female screw of the elastic member, and a flange portion of the screw component and the elastic component. And a step of holding the body slidably.

According to this method, since the female screw of the elastic component and the male screw of the screw component are loosely screwed together before passing through the antenna, the component can be passed through the antenna only once.

In the above antenna holding device and antenna holding method, it is preferable that the outer diameter of the large diameter portion at the rear end of the antenna is smaller than the inner diameter of the elastic component and the female screw. This is because the order in which the large-diameter portion is fixed to the rear end of the antenna can be changed before or after the elastic component is passed through the antenna, and the degree of freedom of assembly is increased. Further, when it is desired to replace the elastic component after assembly, it is possible to replace the elastic component without removing the large-diameter portion at the rear end of the antenna.

Further, in the above antenna holding device and antenna holding method, a concave portion for accommodating the female screw is provided on one end side of the elastic component, and a plurality of grooves are formed on an inner wall surface of the concave portion. A convex portion is formed on the outer peripheral surface of the female screw to engage with each of the plurality of grooves. Due to this, when fixing the female screw to one end side of the elastic part,
The convex portion on the outer peripheral surface of the female screw can be engaged with the groove on the inner wall surface of the concave portion on one end side of the elastic component. By engaging the outer peripheral surface of the female screw with the elastic component in this way, the female screw does not rotate when the female screw of the elastic component and the male screw of the screw component are tightened. As a result, the female screw can be efficiently attracted to the flange side of the screw component by the rotation of the male screw of the screw component, and a crushed portion can be formed in the elastic component.

[0018]

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

(First Embodiment) FIG. 1 shows a first embodiment of the present invention.
FIG. 2 is an assembly perspective view for explaining a holding device (holding method) of a communication device antenna according to an embodiment of the present invention.
FIG. 4 is an assembly diagram of the female screw and packing shown in FIG. FIG.
FIGS. 2A and 2B are cross-sectional views showing specific states when the antenna shown in FIG. 1 is held in a communication device housing. Here, the same parts as those in the conventional example of FIG. 6 are denoted by the same reference numerals, and detailed description is omitted.

As shown in FIG. 1, in the antenna holding device of this embodiment, a threaded part 30 and an elastic part, for example, a rubber packing 31 are passed through, and both ends are larger than the cylindrical hole diameter of the threaded part 30. Linear antenna 2 provided with portion 21
0 and the communication device housing 1 so that the antenna 20 can be stored.
0, and a cylindrical portion 13 having a rib 14 formed on the inner peripheral surface 11 thereof. The communication device housing 10 is made of, for example, a plastic material.

The threaded part 30 is formed by providing a flange 30b at one end of a cylindrical body having an external thread 30a cut on the outer peripheral surface. The packing 31 has a female screw 32 coaxially fixed to one end and a flange 31a provided at the other end.

On the outer periphery of the antenna 20, the screw component 30 and the packing 31 are arranged such that the other ends thereof face each other. Then, by tightening the male screw 30a of the screw component 30 and the female screw 32 of the packing 31, the crushed portion formed on the packing 31 (FIG. 3)
(See (b)) and the flange portion 30b of the threaded component 30 sandwiching the rib 14 on the inner peripheral surface 11 of the cylindrical portion 13, whereby the antenna 20 is slidably held in the communication device housing 10.

The large-diameter portions 21 at both ends of the antenna 20
Has a role as a stopper for preventing the screw part 30 from falling off from the antenna 20, and at least one of the large-diameter portions 21 is detachable.

In order to fix the female screw 32 to the packing 31, a concave portion 31b for accommodating the female screw 32 is provided coaxially in a cylindrical hole at one end of the packing 31, as shown in FIG. A plurality of grooves 3 are formed on the inner wall surface of the recess 31b.
3 is formed on the outer peripheral surface of the female screw 32, and a convex portion 32a that engages with each of the grooves 33 is formed. By engaging the convex portion 32a with the groove 33 and, for example, by bonding,
A female screw 32 is integrally fixed to one end of the packing 31.

Next, a method for holding the antenna in the housing will be described in detail with reference to FIGS.

First, the antenna 20 and the ribs 14 on the inner peripheral surface are provided.
, A screw part 30, a packing 31, and a large-diameter part 21 that is detachably attached to the front and rear ends of the antenna 20, and is larger than the cylinder hole diameter of the screw part 30. And prepare. Screw parts 30, packing 31
Is as described above.

Thereafter, the flange portion 30b of the screw component 30
The screw part 30 so that
Through the antenna 20.

Next, the packing 31 is passed through the antenna 20 so that the end of the threaded part 30 on the male screw 30a side and the end of the packing 31 on the flange 31a side face each other.

Next, large-diameter portions 21 are fixed to the front and rear ends of the antenna 20, respectively. Thereby, the screw component 30 does not come off from the antenna 20.

Thereafter, the packing 31 is pushed into the cylinder 13 from the female screw 32 side of the packing 31 until the flange 31a of the packing 31 contacts the rib 14 in the cylinder 13 (see FIG. 3A). .

Then, the male screw 30a of the screw component 30 and the female screw 32 of the packing 31 are tightened. As a result, the female screw 32 is drawn toward the male screw 30a,
A protruding crushed portion 31c is formed on the outer peripheral surface of the packing 31, and the rib 14 on the inner peripheral surface 11 of the cylindrical portion 13 is sandwiched between the crushed portion 31b and the flange portion 30b of the screw component 30 (FIG. 3 (b)). As a result, the screw component 30 is fixed inside the cylindrical portion 13, and the antenna 20 does not come off even if pulled in the X direction in FIG. 3B, and is slidably held by the housing 10.

In this embodiment, as shown in FIG. 2, since the convex portion 32a on the outer peripheral surface of the female screw 32 is engaged with the groove 33 of the concave portion 31b of the packing 31, the packing 31 Female screw 32 and male screw 3 of screw part 30
When the screw 0a is tightened, the female screw 32 does not rotate. As a result, the female screw 32 is rotated by the rotation of the male screw 30a of the screw component 30, and the flange portion 30b of the screw component 30 is rotated.
It can be efficiently attracted to the side to form a crushed portion in the packing 31.

The outer diameter of the large diameter portion 21 at the rear end of the antenna 20 is preferably smaller than the inner diameters of the packing 31 and the female screw 32. This is because the order in which the large-diameter portion 21 is fixed to the rear end of the antenna 20 can be changed before or after the packing 31 is passed through the antenna 20, and the degree of freedom in assembling is increased. In addition, when it is desired to replace the packing 31 after the assembly, the packing 31 can be replaced without removing the large-diameter portion 21 at the rear end of the antenna 20.

(Second Embodiment) Instead of the above-described antenna holding method, the following method can be adopted. FIG. 4 is a sectional view showing the most characteristic stage of the antenna holding method according to the second embodiment of the present invention. Here, differences from the first embodiment will be mainly described with reference to FIGS.

First, similarly to the first embodiment, an antenna 20, a communication device housing 10 having a cylindrical portion 11 having a rib 14 formed on an inner peripheral surface, a screw component 30, and a packing 3
1 and a large-diameter portion 21 that is detachably attached to the front and rear ends of the antenna 20 and that is larger than the cylindrical hole diameter of the screw component 30 are prepared.

Then, the male screw 30a of the screw component 30 and the female screw 32 of the packing 31 are loosely screwed with the male screw 30a of the screw component 30 and the flange 31a end of the packing 31 facing each other. (See FIG. 4).

Thereafter, the flange portion 30b of the screw component 30
Is put on the upper end side of the antenna 20, and the screwed component 30 and the packing 31 are passed through the antenna 20.

Next, large-diameter portions 21 are fixed to the front and rear ends of the antenna 20, respectively.

Then, the packing 31 in which the screw component 30 is loosely screwed is inserted into the cylindrical portion 13 first from the female screw 32 side of the packing 31 until the flange portion 31 a of the packing 31 hits the rib 14 in the cylindrical portion 13. Push it in (see FIG. 4).

Thereafter, as in the first embodiment, a crushed portion 31c formed in the packing 31 by tightening the male screw 30a of the screw part 30 and the female screw 32 of the packing 31, the screw part 30 and the packing By sandwiching the rib 14 with the flange portions 30b and 31a of the
The antenna 20 is slidably held on the housing 20.

According to this method, since the female screw 32 of the packing 31 and the male screw 30a of the screw component 30 are loosely screwed before being passed through the antenna 20, it is only necessary to pass the component through the antenna 20 at one time. The assembly efficiency is improved as compared with the embodiment.

[0042]

The antenna holding device and the antenna holding method of the present invention have the following effects.

First, since the insert is not used unlike the conventional example, the defect at the time of press-fitting of the insert is eliminated.
In the case of insert molding, the molding cycle time is shortened, and the productivity is improved.

Second, press-fitting the insert into the housing,
Since they are not integrally molded, they can be easily disassembled and the housing can be recycled.

[Brief description of the drawings]

FIG. 1 is an assembled perspective view for explaining a holding device (holding method) of a communication device antenna according to a first embodiment of the present invention.

FIG. 2 is an assembly view of a female screw and a packing shown in FIG. 1;

FIG. 3 is a cross-sectional view showing a specific state when the antenna shown in FIG. 1 is held in a communication device housing.

FIG. 4 is a sectional view showing the most characteristic stage of the antenna holding method according to the second embodiment of the present invention.

5A and 5B are external views illustrating an example of a communication device, in which FIG. 5A illustrates a front side of a housing, and FIG. 5B illustrates a back side of the housing.

FIG. 6 is an assembly perspective view for explaining a conventional holding device that slidably holds a linear antenna used in a communication device.

DESCRIPTION OF SYMBOLS 10 Communication device housing 11 Inner peripheral surface 13 Cylindrical part 14 Rib 20 Antenna 21 Large diameter part 30 Screw part 30a Male screw 30b Flange part 31 Packing 31a Flange part 31b Concave part 31c Collapsed part 32 Female screw 32a Convex part 33 Groove

Claims (7)

[Claims] 1. A cylindrical body having a flange at one end of a cylindrical body having an external thread cut on an outer peripheral surface, a cylindrical body having a female screw coaxially fixed at one end and a flange at the other end. The screw component and the elastic component are passed through such that the other ends of the screw component and the elastic component face each other,
And a linear antenna having a large-diameter portion larger than the cylindrical hole diameter of the screw component at both ends, and a cylindrical portion provided on a housing so that the antenna can be housed and having a rib formed on an inner peripheral surface. The male screw of the screw component and the female screw of the elastic component are screwed together to form a crushed portion formed in the elastic component, and the flange of the screw component sandwiches the rib of the tubular portion to form the cylindrical component. An antenna holding device configured to slidably hold an antenna on the cylindrical portion. 2. The antenna holding device according to claim 1, wherein an outer diameter of a large diameter portion at a rear end of the antenna is smaller than inner diameters of the elastic component and the female screw. 3. A recess for accommodating the female screw is provided at one end of the elastic component, a plurality of grooves are formed on an inner wall surface of the recess, and the plurality of grooves are formed on an outer peripheral surface of the female screw. 3. A projection which engages with each of the first and second members.
An antenna holding device according to item 1. 4. A threaded component having a linear antenna, a communication device housing having a cylindrical portion having a rib formed on an inner peripheral surface, and a flange portion at one end of a cylindrical member having an external thread cut on an outer peripheral surface. A female screw is coaxially fixed to one end and a cylindrical elastic component having a flange at the other end, and a cylindrical hole diameter of the screw component which is detachably attached to the front and rear ends of the antenna. Preparing a large diameter large portion; passing the screw component through the antenna such that the flange portion of the screw component is on the upper end side of the antenna; and the other end of the screw component and the elastic component. Passing the elastic components through the antenna so that they face each other; fixing the large diameter portions to the front end and the rear end of the antenna, respectively; and Inside the cylindrical part, the elastic part Pushing the flange until the flange hits the rib; squeezing the male screw of the screw component and the female screw of the elastic member into a crushed portion formed in the elastic component; and a flange portion of the screw component and the elastic component. And holding the antenna slidably in the communication device housing by sandwiching the rib between (a) and (b). 5. A screw component having a linear antenna, a communication device housing having a cylindrical portion having a rib formed on an inner peripheral surface, and a flange portion at one end of a cylindrical member having an external thread cut on an outer peripheral surface. A female screw is coaxially fixed to one end and a cylindrical elastic component having a flange at the other end, and a cylindrical hole diameter of the screw component which is detachably attached to the front and rear ends of the antenna. Preparing a large-diameter large portion; and opposing the other ends of the screw component and the elastic component to each other, and then loosely tightening the male screw of the screw component and the female screw of the elastic component. Passing the fastened screw component and elastic component through the antenna such that the flange portion of the screw component is on the upper end side of the antenna; and fixing the large-diameter portions to the front and rear ends of the antenna, respectively. Step and the screw part is loose Pushing the screwed elastic component into the cylindrical portion from one end side of the elastic component first until the flange portion of the elastic component hits the rib; and a male screw of the screw component and a female screw of the elastic member The antenna is slidably held in the communication device housing by sandwiching the rib between a crushed portion formed in the elastic component by screwing the elastic component and a flange portion of the screw component and the elastic component. And a step of sequentially holding the antenna. 6. The antenna holding method according to claim 5, wherein an outer diameter of a large diameter portion at a rear end of the antenna is smaller than inner diameters of the elastic component and the female screw. 7. A recess for accommodating the female screw is provided at one end of the elastic component, a plurality of grooves are formed on an inner wall surface of the recess, and the plurality of grooves are formed on an outer peripheral surface of the female screw. 7. A projection is formed to engage with each of the above.
The antenna holding method according to claim 1.