KR20130104783A - Antenna - Google Patents

Abstract

PURPOSE: An antenna prevents damage to a rod part by minimizing the frictional force of a bushing spring. CONSTITUTION: A first rod (110) has a first external diameter. A second rod (120) has a second external diameter. At least one nonmetallic elastic member is installed at the first rod. The nonmetallic elastic member is elastically attached to the inner surface of the second rod. A bushing spring (140) is arranged between the first rod and the second rod.

Description

ANTENNA {ANTENNA}

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

In general, antennas have been developed for transmitting and receiving electronic and electromagnetic signals. Such an antenna has a different length and structure of an antenna device depending on frequency band.

Recently, with the development of wireless communication devices such as DMB, PMP, navigation, mobile phones, tablet PCs, the antenna is widely used in portable electronic devices. The antenna may be a rod antenna, a helical antenna, or the like.

The rod antenna is typically manufactured such that a plurality of rods having different diameters can be stretched in multiple stages. A rod having a small inner diameter must not be separated from a rod having a large outer diameter and at the same time, a rod having a small inner diameter is not shaken. In order to be able to slide stably without, the bushing spring is installed on the inner upper end of the rod except the rod having the smallest diameter.

However, in the conventional rod antenna as described above, excessive friction is generated between the bushing spring and the inner circumferential surface of the rod having the large diameter connected to the outer circumferential surface of the rod having the small diameter that is slidably moved when the antenna is stretched and contracted. And there was a problem that foreign matter penetrates into the rod.

Accordingly, the present invention is intended to solve such a problem, and at the same time to allow the rods to be slidably and stably moved when the antenna is stretched, and at the same time, inconvenience caused by the frictional force felt by the user between the sliding rods and the bushing spring. It is to provide an antenna that minimizes the box and prevents foreign matter from being inserted into the rod.

An antenna according to a first embodiment of the present invention for solving this problem includes a rod portion including a first rod and a second rod and at least one nonmetal elastic member. The first rod has a first outer diameter. The second rod has a second outer diameter that is greater than the first outer diameter. The nonmetal elastic member is elastically contacted between the outer surface of the first rod and the inner surface of the second rod.

The antenna may further comprise a bushing spring disposed between the first rod and the second rod.

The antenna may further include a stopper coupled to an end of the first rod to prevent separation of the bushing spring.

Grooves are formed on an outer circumferential surface of the stopper, and the nonmetal elastic member may be seated on the grooves.

The nonmetal elastic member may be formed in a ring shape.

The nonmetal elastic member may be interposed between the bushing spring and the stopper.

Such an antenna can prevent the rod part from being damaged by minimizing the friction force of the bushing spring through the non-metal elastic member, and reduce the inconvenience of the user due to the friction.

In addition, there is an effect that the rod sliding in the extension of the antenna can be stably slid without shaking.

On the other hand, there is an effect that can prevent the phenomenon of penetrating foreign matter such as water into the antenna by the non-metal elastic member.

1 is a perspective view showing an antenna according to the present invention
2 is an exploded perspective view of the antenna according to the first embodiment of the present invention;
3 is a partial cross-sectional view showing a state in which the antenna shown in FIG. 2 is coupled;
4 is an exploded perspective view of an antenna according to a second embodiment of the present invention;
5 is a partial cross-sectional view showing a state in which the antenna shown in FIG. 4 is coupled;
6 is an exploded perspective view of an antenna according to a third embodiment of the present invention;
7 is a partial cross-sectional view showing a state in which the antenna shown in FIG. 6 is coupled;

The present invention is capable of various modifications and various forms, and specific embodiments are illustrated in the drawings and described in detail in the text. It should be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the 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 otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the meaning in the context of the relevant art and are to be interpreted as ideal or overly formal in meaning unless explicitly defined in the present application Do not.

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

≪ Example 1 >

1 is a perspective view showing an antenna according to the present invention, Figure 2 is an exploded perspective view of the antenna according to a first embodiment of the present invention, Figure 3 is a partial cross-sectional view showing a state in which the antenna shown in FIG. to be.

1 to 3, the antenna 10 according to the present embodiment includes a rod part 100, a head part 200, a bushing spring 140, a nonmetal elastic member 150, and a stopper 160. do.

In the rod part 100, rod-shaped rods 110, 120, and 130 receive radio waves. Here, the radio wave may have various frequency bands according to the wireless communication device used. For example, the frequency of the radio wave may be 170MHz to 770MHz. The rod part 100 may be formed of a plurality of rods 110, 120, and 130 having a hollow bar shape. For example, the rod part 100 may be formed of a first rod 110, a second rod 120, and a third rod 130.

The first rod 110 may be formed in a cylindrical or polygonal pillar shape such as a triangular prism or a square prism. The diameter of the first rod 110 may have a diameter smaller than the diameter of the second rod 120. Therefore, the first rod 110 can slide freely into the second rod 120. The material of the first rod 110 may be formed of a conductive elastic material free from bending. For example, the material of the first rod 110 includes a piano wire, a wire cable, a nickel-titanium alloy, and the like. Therefore, the first rod 110 may be freely bent or curved in all directions by an external force. Meanwhile, a head part 200 may be formed at an upper end of the first rod 110.

The second rod 120 may have a shape corresponding to the shape of the first rod 110. The diameter of the second rod 120 may have a diameter larger than the diameter of the first rod 130. The second rod 120 may freely slide into the third rod 130 and may be stretched from the third rod 110. The second rod 120 may have a length longer than that of the first rod 110 so that the first rod 110 may be accommodated in the second rod 120. The material of the second rod 120 may be formed of an inelastic material which is not free from bending unlike the material of the first rod 110.

The third rod 130 may have a shape corresponding to the shape of the second rod 120. The diameter of the third rod 130 may have a diameter larger than the diameter of the second rod 120. The third rod 130 may be formed of an inelastic material that is not free to be bent in the same manner as the material of the second rod 120.

Although the above-described exemplary embodiment includes a first rod 110, a second rod 120, and a third rod 130 described above, the antenna may be configured as a multi-stage rod having four or more stages. have. In addition, each of the rods other than the third rod 130, which is the rod having the largest diameter, may include a stopper 160.

The bushing spring 140 is installed on relatively small rods so that the relatively small rods slidingly fastened to the relatively large rods are not separated from the large rods. It provides elasticity in the rod direction. For example, the first and second rods 110 and 120 may be installed to prevent the first and second rods 110 and 120 from being separated from the second and third rods 120 and 130. On the other hand, the bushing spring 140 provides elasticity in a rod direction having a relatively large diameter. That is, the bushing spring 140 installed in the first rod 110 provides elasticity in the direction of the second rod 120, and the bushing spring installed in the second rod 120 has elasticity in the direction of the third rod 130. to provide.

Here, the bushing spring 140 as described above is preferably formed by molding a metal plate in a cylindrical shape, wherein the facing surface of the metal plate formed in the cylindrical shape is preferably not attached. Alternatively, the opposing surfaces of the metal plate may be attached to each other.

The nonmetal elastic member 150 may be inserted into the remaining rods 110 and 120 except the rod 130 having the largest diameter such that the non-metal elastic member 150 may be inserted into the remaining rods 120 and 130 except the rod 110 having the smallest diameter. Is installed. Non-metal elastic member 150 as described above is sliding each other It is elastically in close contact with the fastened rods. For example, the elastic member 150 installed on the first rod 110 is elastically in close contact with the outer circumferential surface of the first rod 110 and the inner circumferential surface of the second rod 120, and is installed on the second rod 120. The elastic member is in close contact with the outer circumferential surface of the second rod 120 and the inner circumferential surface of the third rod 130. Here, the nonmetal elastic member 150 may be manufactured in a cylindrical or ring shape using a nonmetallic material such as silicon, urethane, or rubber. The nonmetal elastic member 150 may be installed on the remaining rods 110 and 120 except for the rod 130 having the largest diameter so that the non-metal elastic member 150 may be located at the bottom of the bushing spring 140. have.

The non-metal elastic member 150 as described above provides elasticity in the direction of the rods 120 and 130 in which the bushing spring 140 is inserted together with the bushing spring 140.

Accordingly, the elastic force of the bushing spring 140 provided to the rods 120 and 130 into which the bushing spring 140 is inserted can be minimized. On the other hand, the reduced elastic force of the bushing spring 140 is compensated by the non-metal elastic member 150.

Accordingly, when the antenna is expanded and contracted, as in the conventional antenna, the sliding rod can be stably slid without shaking, and the friction force generated between the bushing spring 140 and the rod made of metal can be minimized. .

The stopper 160 may be coupled to the ends of the rods 110 and 120 except for the rod 130 having the largest diameter, thereby preventing the bushing spring 140 from being separated.

As described above, the antenna according to the present invention may reduce the damage of the rod part 100 by minimizing the friction force of the bushing spring 140 through the non-metal elastic member 150 and reduce the inconvenience of the user due to friction.

In addition, there is an effect that the rod sliding during expansion and contraction of the antenna can be stably slid without shaking.

On the other hand, the non-metal elastic member 150 has an effect of preventing the foreign matter, such as water penetrating into the antenna.

<Example 2>

4 is an exploded perspective view of an antenna according to a second embodiment of the present invention, and FIG. 5 is a partial cross-sectional view showing a state in which the antenna shown in FIG. 4 is coupled.

Since the antenna according to the present exemplary embodiment is substantially the same as the antenna according to the first exemplary embodiment except for a partial configuration of the stopper, detailed description of other components except for the part of the configuration of the stopper will be omitted. The same reference numerals will be given to the same components as those in the first embodiment.

4 to 5, grooves 162 may be formed on the outer circumferential surface of the stopper 160. Therefore, the nonmetal elastic member 150 is preferably mounted to the groove 162. Therefore, the non-metal elastic member 150 can improve the stability of the sliding during the expansion and contraction of the antenna 10, it can provide a smooth operating feeling to the user.

<Example 3>

6 is an exploded perspective view of an antenna according to a third embodiment of the present invention, and FIG. 7 is a partial cross-sectional view showing a state in which the antenna shown in FIG. 6 is coupled.

Since the antenna according to the present embodiment is substantially the same as the antenna according to the first embodiment except for a part of the nonmetal elastic member and the stopper, a detailed description of other components except for the part of the nonmetal elastic member and the stopper is described. The same reference numerals will be given to the same components as those in the first embodiment.

6 to 7, the nonmetal elastic member 150 is coupled to an end of the stopper 160. For example, a coupling hole 161 is further formed at an end of the stopper 160, and the non-metal elastic member 150 is in close contact with the inner circumferential surface of the rod into which the non-metal elastic member 150 is inserted. ) And the coupling protrusion 152 including the coupling protrusion 152 protruding from the contact portion 151 may be inserted into the coupling hole 161 to be coupled.

While the present invention has been described in connection with what is presently considered to be practical and exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

10: antenna 100: rod portion
110: first load 120: second load
130: third rod 140: bushing spring
150: non-metal elastic member 160: stopper

Claims (7)

A first rod having a first outer diameter;
A second rod having a second outer diameter greater than the first rod; And
An antenna comprising at least one non-metal elastic member is installed on the first rod to elastically contact the inner surface of the second rod. The method of claim 1,
And a bushing spring disposed between the first rod and the second rod. 3. The method of claim 2,
And a stopper coupled to an end of the second rod to prevent separation of the bushing spring. The method of claim 3, wherein
Grooves are formed on the outer circumferential surface of the stopper,
And the nonmetal elastic member is seated in the groove. 5. The method of claim 4,
The non-metal elastic member is characterized in that the ring shape. The method of claim 3, wherein
The non-metal elastic member is coupled to the end of the stopper antenna. The method of claim 3, wherein
And the non-metal elastic member is interposed between the bushing spring and the stopper.

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