JPH0654303U - Antenna for wireless communication device - Google Patents

Abstract

(57) [Abstract] [Purpose] Smooth operation is possible even if the antenna element is frequently pulled out from the communication device housing and repeatedly stored.
To provide an antenna for a wireless communication device which is highly durable and can be made lightweight. [Structure] A wireless communication antenna having a tubular holder into which a rod-shaped antenna element can be drawn out from or housed in a wireless communication device housing, wherein the holder is attached to the wireless communication device housing. A fixed portion and an element holding portion integrally provided with the fixed portion, and a tip peripheral wall of the element holding portion is curved or spreads outward.

Description

[Detailed description of the device] [Industrial applications]

 The present invention relates to an antenna for a wireless communication device, more specifically, to a pull-out / retractable rod antenna used for transceivers, portable telephones and the like.

[Prior art]

 Of the above antennas for wireless communication devices, the pull-out / retractable rod antennas have been generally used in the past, but in recent years, with the downsizing of communication devices and improvement of performance, Compact types such as those shown in 6 are becoming mainstream. When this type of antenna A is viewed from the structural side, it has a basic configuration with a rod-shaped antenna element a in which a metal wire is covered with a resin, and a metal holder b holding this. The holder b is attached to a predetermined position of the communication device housing f by the fixing part c, and when used, as shown in FIG. 7, the antenna element a is pulled out from the communication device housing f. As a result, the holder b is joined to the metal base d provided in the lower portion of the antenna element a, mechanically and electrically coupled to each other, and functions as an antenna. As shown in FIG. 6, a vertical cut e is provided on the tip side of the holder b, and this has a spring action to elastically fix the antenna element a as shown in FIG. ing. With such a structure, when compared with a detachable antenna, the antenna element a is integrated with the communication device housing f, so that it is not lost. In addition, since it can be stored in the housing when it is not used, it has the advantages of preventing damage to the element a and easily storing the device in a pocket or bag of clothes.

[Problems to be solved by the device]

 However, while the conventional antenna A has the above-mentioned advantages, when the antenna element a is repeatedly put in and taken out, structurally, the antenna element a coated with the resin and the base portion not coated are structurally structurally affected. A slight step or a gap is likely to occur between d and d due to abrasion or the like. On the other hand, on the holder b side, the tip opening h of the holder b remains cut off, that is, is in a strait state. Therefore, as shown in FIG. 8, the tip opening of the holder b is pulled out when the antenna element a is pulled out. The root portion g of the base portion d of the antenna element a is caught in the portion h, and it is difficult to pull it out smoothly. If it is continuously used in such a state, the joint portion with the holder b and the antenna element a is deformed, As a result, poor contact is likely to occur and durability is poor.

[The purpose of the device]

 Therefore, the present invention has been made in view of the above problems, and the antenna element is frequently pulled out from the communication device housing, and even if it is repeatedly stored, smooth operation is possible, and it is durable and lightweight. It is an object of the present invention to provide an antenna for a wireless communication device, which can achieve the following.

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention provides a wireless communication antenna having a cylindrical holder into which a rod-shaped antenna element can be drawn out from a wireless communication device housing or can be stored. Is provided with a fixed portion attached to the radio communication device housing and an element holding portion integrally provided with the fixed portion, and the tip peripheral wall of the element holding portion is curved or spreads outward.

[Action]

 With the above configuration, when the antenna element is pulled out from the wireless communication device housing when it is used, the base portion of the base of the antenna element abuts against the expanded or curved tip peripheral wall of the holder. However, it slides at the curved portion, and the element base is stored in the holder without resistance. This allows the antenna element to be permanently pulled out and stowed without damaging the holder and the element base.

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. Embodiment 1 As shown in FIG. 1, the basic structure of this antenna 1 is composed of a rod-shaped antenna element 2 and a metal holder 3 for holding this element 2. The antenna element 2 is covered with a resin sheathing body 5 in which a tip 4 for pulling out is integrally formed on an element main body (not shown) made of a metal wire. As shown in FIG. 2, at the lowermost part of the element 2, there is provided a metal element base portion 7 which is connected to the element body and has a tapered root 6 side. As shown in FIG. 3, the holder 3 includes a fixing portion 9 that is attached to the equipment casing 8 by screwing, and an element holding portion 10 that is integrally provided with the fixing portion 9. Further, in this element holding portion 10, as shown in FIGS. 2 and 3, the tip peripheral wall portion 11 is expanded outward so that the cross section becomes curved. The degree of expansion of the tip peripheral wall portion 11 is related to the space inside the device in which the antenna 1 is mounted, and it is better not to make it too large for downsizing. Further, in the figure, 12 is a resin cover of the fixing portion 9. With the above-described structure, even if a step or a gap is formed between the element body side of the element 2 and the element base portion 7, when the element 2 is pulled up from the equipment casing 8, the element The root 6 of the base portion 7 slides on the front end peripheral wall portion 11 of the holder 3 and does not get caught unlike the conventional one, and is smoothly accommodated in the holder 3. At this time, the element base portion 7 is elastically held by the holder 3 with an appropriate force by the vertical cut groove 13 formed in the element holding portion 10. Thereby, the antenna 1 can perform a predetermined function. Embodiment 2 In this case, the shape of the tip peripheral wall portion 11 of the holder 3 is, as shown in FIG. 4, configured so as to be more deeply wound (curling) than that of Embodiment 1 described above. Even with this configuration, the same operational effect as that of the first embodiment can be obtained. At the same time, by sufficiently folding back the tip peripheral wall portion 11, even if the wall thickness of the entire holder 3 including that portion is made thinner than that of the conventional straight one, it is sufficiently strong in strength and durability is ensured. You can This also makes it possible to reduce the weight. Embodiment 3: As a further improvement, the shape of the tip peripheral wall portion 11 of the holder 3 may be such that the widened portion is formed in a taper shape such that the wall thickness becomes thinner toward the tip end side. The same effect as that of each of the above embodiments can be obtained. In this case, as shown in FIG. 5, the degree of bending differs between the inside and the outside of the tip peripheral wall portion 11. That is, since the degree of curvature on the outside is smaller than the degree of curvature on the inside, the tip peripheral wall portion 11 does not become wide open even though the tip peripheral wall portion 11 is appropriately expanded. Suitable for small spaces. In the present invention, the shape of the tip peripheral wall portion 11 of the holder 3 is not limited to the above-mentioned embodiment, and for example, the outer side may be straight and only the inner side may be curved. Then, a curling method of expanding outward may be used, and various design changes can be made within the scope of the technical idea described in the scope of claims for utility model registration.

[Effect of device]

 As described above, since the antenna for a wireless communication device of the present invention has the tip peripheral wall portion of the holder through which the antenna element is inserted curved or expanded outward, when the antenna element is pulled out, it is hooked on the element base portion. You can smoothly pull out the antenna. Therefore, unlike the conventional one, the holder has a merit that it is rich in durability without damaging the peripheral wall of the tip of the holder, and the holder can be thinned in terms of strength, so that the holder can be lightened. .

[Brief description of drawings]

FIG. 1 is a perspective view showing a basic configuration of an antenna for a wireless communication device of the present invention.

FIG. 2 is an enlarged sectional view of a main part of the first embodiment of the present invention.

FIG. 3 is a main-portion cross-sectional view showing a state in which a holder is attached to the device housing according to the embodiment.

FIG. 4 is an enlarged cross-sectional view of a main part of the second embodiment.

FIG. 5 is an enlarged cross-sectional view of a main part of the third embodiment.

FIG. 6 is a perspective view showing a conventional antenna for a wireless communication device.

FIG. 7 is a partially enlarged sectional view showing a state in which the antenna is attached to a wireless communication device housing.

FIG. 8 is an enlarged cross-sectional view of the relevant part.

[Explanation of symbols]

 1. Antenna 2. Antenna element 3. Holder 4. Picking 5. Resin exterior body 6. Root 7. Element base 8. Equipment housing 9. Fixed part 10. Element holding unit 11. Tip peripheral wall portion 12. Resin cover 13. Kerf

Claims (2)

[Scope of utility model registration request] 1. An antenna for a wireless communication device, comprising: a cylindrical holder into which a rod-shaped antenna element is drawn out from or housed in a housing of the wireless communication device. The holder is a wireless communication device housing. A fixed part to be attached to, and an element holding part provided integrally with the fixed part,
An antenna for a wireless communication device, wherein a tip peripheral wall of the element holding portion is curved or spreads outward. 2. The antenna for a wireless communication device according to claim 1, wherein a tip portion of the element holding portion, in which the tip peripheral wall is curved or expands outward, is formed to be thinner and tapered toward the tip.