KR101108936B1 - Antenna apparatus - Google Patents

Abstract

An antenna device that can be used in a wireless communication device is disclosed. The antenna device has a rod shape and a plurality of rods having different diameters inside and outside are stretched in multiple stages, and are formed in a coil shape by cutting a portion of the rod portion and the rod portion for receiving radio waves, and the same material as the rod portion. As a helical portion formed integrally with the rod portion for receiving radio waves. Therefore, it is easy to manufacture and can improve the reception sensitivity of radio waves.

Description

Antenna device {ANTENNA APPARATUS}

The present invention relates to an antenna device, and more particularly to an antenna device that can be used in a wireless communication device such as DMB, PMP, navigation, mobile phone.

In general, an antenna device has been developed to be employed in portable electronic devices such as mobile phones to receive a specific frequency. In general, there are various types of antenna devices for receiving radio waves, such as a rod antenna, a helical antenna, and a multi-resonant antenna, and the length and structure of the antenna device vary depending on the frequency band used.

The rod antenna has an advantage of receiving a weaker signal than the helical antenna, but has a problem that requires a lot of space that can be secured. On the other hand, the helical antenna takes up less space than the load antenna, but has a disadvantage in that it cannot receive a weak signal. Therefore, the commercially available antenna device uses a combination of a rod portion of a rod antenna and a helical portion of a helical antenna.

However, the conventional antenna device is complicated in the manufacturing process because the rod portion of the rod antenna and the helical portion of the helical antenna are connected to each other by soldering or by using other coupling members, which is complicated in the manufacturing process, and the manufacturing cost is due to the cost of the coupling members. The problem of increasing it remains.

Accordingly, the present invention has been made in view of the above problems, and the problem to be solved by the present invention is to provide an antenna device which can improve the radio wave reception sensitivity while having a simple manufacturing process and low manufacturing cost.

The antenna device according to an embodiment of the present invention has a rod shape and a plurality of rods having different diameters inside and outside are stretched in multiple stages, and are formed in a coil shape by cutting a portion of the rod portion and a portion of the rod portion receiving radio waves. And, the same material as the rod portion is formed integrally with the rod portion and includes a helical portion for receiving radio waves.

The helical portion may further include a bobbin member that supports the helical portion and prevents breakage, and the helical portion may be formed in a shape surrounding at least a portion of the bobbin member.

A rod having a smaller inner diameter slides freely from an inside of a rod having a larger diameter, and as the rods extend, the inner diameter of the rod is smaller, and the helical portion is disposed at a rod having the largest inner diameter among the rods. Can be formed.

It may further include a coating tube to prevent foreign matter from entering the helical portion from the outside, and to prevent the helical portion from bending or breaking.

The inner surface of the rod with the large inner diameter freely slides on the outer surface of the rod with the smaller diameter, and as the rods extend, the inner diameter of the rod is increased, and the helical portion is placed on the rod having the largest inner diameter. Can be formed.

The helical portion may be formed at an upper end of the rod having the largest internal diameter among the rods, and may further include a head surrounding the helical portion.

The antenna device according to the present invention improves the radio wave reception sensitivity while having a simple manufacturing process and low manufacturing cost.

1 is a perspective view of an antenna device according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view of the antenna device shown in FIG. 1.
FIG. 3 is a diagram for describing in detail a method of manufacturing a helical part of the antenna device shown in FIG. 1.
4 is a cross-sectional view showing an antenna device according to a second embodiment of the present invention.
5 is a cross-sectional view showing an antenna device according to a third embodiment of the present invention.

As the inventive concept allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to the specific disclosed form, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

The terms first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "having" are intended to indicate that there is a feature, number, step, action, component, part, or combination thereof described in the specification, and that one or more other features It should be understood that it does not exclude in advance the possibility of the presence or addition of numbers, steps, actions, components, parts or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art.

Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art, and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings.

<First Embodiment>

1 is a perspective view of an antenna device according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view of the antenna device shown in FIG. 1.

1 and 2, the antenna device 100 according to an exemplary embodiment of the present invention includes a rod unit 110 and a helical unit 120.

The rod unit 110 receives rod-shaped rods. Here, the radio wave may have various frequency bands depending on the wireless communication device used. For example, the frequency of the radio wave may be 170MHz to 770MHz. The rod unit 110 may be formed of a plurality of rods 111, 112, and 113 having a hollow bar shape. For example, the rod 110 may be formed of a first rod 111, a second rod 112, and a third rod 113.

The first rod 111 may have a shape of a cylinder, a triangular prism, and a square prism. The material of the first rod 111 may be formed of an inelastic material which is not free to bend.

The second rod 112 may have a shape corresponding to the shape of the first rod 111. The diameter of the second rod 112 may have a diameter relatively smaller than the diameter of the first rod 111. The second rod 112 may freely slide in and out of the first rod 111 and may be stretched and contracted from the first rod 111. The second rod 112 may have a length relatively shorter than the length of the first rod 111 so that the second rod 112 may be accommodated in the first rod 111. The material of the second rod 112 may be formed of an inelastic material that is not bent in the same manner as the material of the first rod 111.

The third rod 113 may have a shape corresponding to the shape of the second rod 112. The diameter of the third rod 113 may have a diameter relatively smaller than the diameter of the second rod 112. Accordingly, the third rod 113 may be freely slid from the second rod 112 by sliding freely inside and outside the second rod 112. The third rod 113 may have a length relatively shorter than the length of the second rod 112 so that the third rod 113 may be accommodated in the second rod 112.

Unlike the materials of the second rod 112 and the first rod 111, the third rod 113 may be formed of a conductive elastic material free from bending. For example, the material of the third rod 113 includes a piano wire, a wire cable, a nickel-titanium alloy, and the like. Therefore, the third rod may be freely bent or curved in all directions by an external force.

Although the rod unit 110 described above has been described in the three-stage stretchable embodiment including the first, second, and third rod, the rod unit 110 may be configured as a multi-stage rod of four or more stages. have.

The helical part 120 is formed integrally with the rod part 110 to receive radio waves. The radio wave may be the same as the radio wave described above in the rod unit 110. Thus, the radio wave may have various frequency bands depending on the wireless communication device used. For example, the frequency of the radio wave may be 170MHz to 770MHz.

The helical part 120 is integrally formed with the rod part 110 to indicate a different shape by applying physical and mechanical forces to the original shape of the rod part 110. Therefore, the helical part 120 and the rod part 110 are not separately manufactured and are not connected to one by soldering or the like. The helical part 120 has the same material as the rod part 110, but the coil-shaped helical antenna has a structure formed on a part of the rod part 110.

FIG. 3 is a diagram for describing in detail a method of manufacturing a helical part of the antenna device shown in FIG. 1.

Referring to FIG. 3, the helical part 120 may be formed by cutting a portion of the rod part 110. For example, the helical part 120 may be formed in a coil shape by turning a part of the rod part 110.

Specifically, the rod 110 is fixed to the chuck 11 of the turning lathe 10. Subsequently, the cutting edge 13 of the turning lathe 10 is pressed onto a portion of the rod part 110 to form the helical part 120. Subsequently, the chuck 11 of the turning lathe 10 to which the rod part 110 is fixed is rotated. Here, the chuck 11 of the turning lathe 10 may be manufactured as the helical part 120 having a coil shape by moving the rod part 110 in the front-rear direction based on the cutting edge 13. .

The chuck 11 of the turning lathe 10 may control the number of turns of the coil shape of the helical part 120 by adjusting the time for moving the rod part 110 in the front-rear direction. In addition, the size of the coil shape and the number of wounds may be controlled by adjusting the area of the portion where the cutting edge 13 of the turning lathe 10 is pressed against the rod 110.

1 and 2, the helical part 120 may be formed on a rod having the largest internal diameter among the rods 111, 112, and 113 in order to increase reception sensitivity of the radio wave. For example, the helical portion 120 may be formed on the first rod 111. The length and size of the helical part 120 formed on the first rod 111 may be variously changed according to the specifications of the wireless communication device in which the antenna device is used.

The helical part 120 may further include a bobbin member 130 that supports the helical part 120 and prevents it from being broken. The bobbin member 130 may penetrate the helical part 120 to be fixed to at least a part of the inside of the rod part 110. The bobbin member 110 may be in contact with the helical portion 120. The bobbin member 110 may be formed of a material having elasticity.

The helical part 120 may further include a covering tube 140 that prevents foreign matter from entering and prevents the helical part 120 from being bent or broken. The covering tube 140 may cover the entire outer surface of the helical portion 120. In addition, the covering tube 140 may cover a portion of the rod part 110. For example, the covering tube 140 may cover a portion of the helical portion 120 and the first rod 111. The covering tube 140 may be formed of a synthetic resin having elasticity. For example, the coating tube 140 may be formed of a silicone resin, an acrylic resin, a phenol resin, a urethane resin, or the like.

Second Embodiment

4 is a cross-sectional view showing an antenna device according to a second embodiment of the present invention.

Referring to FIG. 4, the antenna device according to the present embodiment is substantially the same as the antenna device shown in FIGS. 1 and 2, except that the diameter of the inside increases as the rods shown in FIGS. 1 and 2 extend and protrude. The same reference numerals are used for the same components, and detailed description thereof will be omitted.

Referring to FIG. 4, the antenna device 100 according to the present embodiment includes a rod unit 110 and a helical unit 120. The rod unit 110 may be formed of a plurality of rods. For example, the rod unit 110 may include a first rod 111, a second rod 112, and a third rod 113.

The rod 110 may have a rod having a large inner diameter freely sliding along an outer surface of a rod having a smaller diameter, and as the rods 111, 112, and 113 extend, an inner diameter of the rod may be increased. Can be large. For example, when the diameters of the rods are relatively compared, the rods have a third rod 113 having the largest inside diameter, and then a diameter of the inside of the second rod 112 having the largest diameter. 1 The diameter of the inside of the rod 111 may be the smallest. Here, the helical part 120 may be formed on the third rod 113 having the largest diameter in order to improve reception sensitivity of radio waves.

The antenna device 100 may further include a bobbin member 130 and a covering tube 140. The bobbin member 130 and the cover tube 140 may be formed on the third rod 113 on which the helical portion 120 is formed.

Third Embodiment

5 is a cross-sectional view showing an antenna device according to a third embodiment of the present invention.

Referring to FIG. 5, the antenna device according to the present embodiment is substantially the same as the antenna device shown in FIG. 4 except that the position of the helical part is different from that of the antenna device. Numbers are used, and duplicate descriptions will be omitted.

Referring to FIG. 5, the antenna device 100 according to the present embodiment includes a rod unit 110 and a helical unit 120. The rod unit 110 may be formed of a plurality of rods. For example, the rod unit 110 may include a first rod 111, a second rod 112, and a third rod 113.

The rod 110 may have a rod having a large inner diameter freely sliding along an outer surface of a rod having a smaller diameter, and as the rods 111, 112, and 113 extend, an inner diameter of the rod may be increased. Can be large. For example, when the diameters of the rods are relatively compared, the rods have a third rod 113 having the largest inside diameter, and then a diameter of the inside of the second rod 112 having the largest diameter. 1 The diameter of the inside of the rod 111 may be the smallest.

In this case, the helical part 120 may be formed at an upper end of the third rod 113 having the largest inner diameter in order to improve reception sensitivity of radio waves. The helical unit 120 may further include a head 150 that covers the upper end of the third rod 113 is formed. The head 150 may have a diameter relatively larger than the diameter of the third rod 113. The head 150 may be formed of a material having elasticity.

The antenna device 100 may further include a bobbin member 130 and a covering tube 140. The bobbin member 130 and the cover tube 140 may be formed at an upper end of the third rod 113 on which the helical portion 120 is formed. In addition, the bobbin member 130 and the cover tube 140 may be wrapped in the head 150.

As described above, according to the antenna device of the present invention, the manufacturing process is simple and the manufacturing cost is low, and the radio wave reception sensitivity is improved.

In the detailed description of the present invention described above with reference to the preferred embodiments of the present invention, those skilled in the art or those skilled in the art having ordinary skill in the art will be described in the claims to be described later And various modifications and variations of the present invention without departing from the scope of the art. Therefore, the above description and the drawings below should be construed as illustrating the present invention, not limiting the technical spirit of the present invention.

100: antenna device 110: rod portion
111: first load 112: second load
113: third load 120: helical part
130: bobbin member 140: coated tube
150: head

Claims (6)

A rod portion having a rod shape and having a plurality of rods having different diameters in and out in multiple stages to receive radio waves;
A helical portion formed by cutting a portion of the rod portion in a coil shape and integrally formed with the rod portion using the same material as the rod portion to receive radio waves; And
And a bobbin member provided inside the helical portion to support the helical portion and prevent breakage, wherein the helical portion surrounds at least a portion of the bobbin member. delete The method according to claim 1,
A rod having a smaller inner diameter slides freely from an inside of a rod having a larger diameter, and as the rods extend, the inner diameter of the rod is smaller, and the helical portion is disposed at a rod having the largest inner diameter among the rods. An antenna device, characterized in that formed. The method according to claim 1,
The antenna device further comprises a covering tube that prevents foreign matter from entering the helical portion from the outside, and prevents the helical portion from bending or breaking. The method according to claim 1,
The inner surface of the rod with the large inner diameter freely slides on the outer surface of the rod with the smaller diameter, and as the rods extend, the inner diameter of the rod increases, and the helical portion is placed on the rod having the largest inner diameter. An antenna device, characterized in that formed. 6. The method of claim 5,
The helical unit is an antenna device, characterized in that formed on the upper end of the rod having the largest inner diameter of the rods, the head surrounding the helical portion.

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