KR20080044575A - Mobile phone swivel antenna - Google Patents

Abstract

A mobile phone swivel antenna is provided to remove inconvenience by maintaining rotation support force when a groove unit is inserted into a spring guide by adopting the groove unit having a cross-section with a different ratio between length and width. A mobile phone swivel antenna includes a groove part(4), an insertion part(5), a hinge axis(8), and an antenna rod(1). The mobile phone swivel antenna is capable of controlling an angle. A hinge groove is formed on the groove part. The groove part has a different cross-section unit(7) having a cross-section with a different ratio between width and length. The insertion part is inserted into the groove part and has a plurality of latch grooves in a shape of a groove. The hinge axis is installed by penetrating the groove and the insertion part. The antenna rod is connected to the insertion part.

Description

Antenna for mobile communication terminal {Mobile Phone Swivel Antenna}

        1 is an installation diagram of a swivel antenna

        2 is an assembly structure diagram of a typical swivel antenna,

              (a) is the state when the antenna is extended

              (b) is the state when the antenna is folded

        Figure 3 is an external view of an embodiment of a swivel antenna according to the present invention

        4 is a sectional view of a feeder insertion section for one embodiment of a swivel antenna according to the present invention

        5 is an enlarged view of a groove of an embodiment of a swivel antenna according to the present invention;

        Figure 6 is a modified state of the leaf spring for one embodiment of a swivel antenna according to the present invention

        Figure 7 is a cross-sectional view of the groove portion according to the present invention

        Figure 8 is a spring guide and leaf spring appearance view according to the present invention

       * Explanation of symbols for the main parts of the drawings

          1 antenna rod 2 terminal

          3: feeding part 4: groove part

          4 ': hinge groove 5: insertion part

          7: shaped section 8: hinge axis

          9: leaf spring 10: spring guide

         11: bend portion 12: wedge portion

         13: foot 14: round step

         15: latch groove 16: elastic member

         17: ball

The present invention relates to a swivel antenna for a terminal having a groove having a cross section having a different ratio of width and length in a swivel antenna for a terminal in which a hinge is installed at an antenna used in a mobile communication terminal such as a mobile phone to enable angle adjustment.

In general, the swivel antenna for a terminal that can adjust the angle is a structure in which a groove having a circular cross section is inserted and supported by a plate spring installed inside the feeder when the antenna is pulled out. When the groove is inserted, the plate spring opens in a radial shape. Since the outer surface of the groove catches the groove, excessive insertion force is required, which may cause user dissatisfaction, and there is a problem in that the antenna is damaged by the action of excessive force during use.

Therefore, the present invention has been made to solve the above problems, as shown in Figure 3 or less when the groove portion is inserted into the spring guide and the spring guide and the leaf spring by applying a groove having a cross section of the vertical and horizontal ratio It is an object of the present invention to provide a swivel antenna for a mobile communication terminal, characterized in that the insertion force is reduced, but the rotational support force can be maintained by being deformed in an elliptical shape.

In order to achieve the above object, the present invention, the swivel antenna is assembled to be bent around the hinge shaft (8) by placing the insertion portion 5 and the groove portion (4) of the uneven shape at the lower end of the antenna rod (1) A swivel capable of maintaining the rotational support force while reducing the insertion force by making the part or all of the grooves 4 have a cross section having a different ratio between the width and the length so that the leaf springs 9 holding them are elliptically deformed when inserted. Provide an antenna.

Here, the insertion force means the force required when inserting or withdrawing an antenna. The insertion force is generated due to the elastic force holding the groove 4 into which the leaf spring 9 embedded in the feed portion 3 is inserted. That is, when the elastic force holding the leaf spring (9) is large, the friction force is increased, the insertion force is increased. If the insertion force is large, the user may be uncomfortable due to the force when the user pulls in and out of the antenna, and in some cases, the antenna may be damaged.

Such a swivel antenna is mounted on the terminal 2 to receive radio waves as shown in FIGS. 1 and 2, and the antenna rod 1 having a plurality of stages is stretchable. The length of the antenna rod 1 varies depending on the commercial frequency band, but if the length becomes longer, when the shock or rapid acceleration occurs during the use of the terminal, the phenomenon that the antenna rod 1 is inertial occurs as shown by the arrow of FIG. There is a case where it is impossible to receive. Therefore, it is necessary to maintain an appropriate rotational support force so that the antenna rod 1 is not easily rotated. To this end, various types of leaf springs 9 are provided on the feed part 3 so as to properly hold the groove 4 of the hinge part. It is common to install. If the groove 4 is held too strongly, the rotational support force is good but the insertion force increases, causing inconvenience in use. Therefore, a method of reducing the insertion force while maintaining the rotational support force is required.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings of FIG. 3.

In the swivel antenna for a mobile communication terminal according to the present invention, as shown in FIG. 3 and below, the insertion part 5 and the groove part 4 of the concave-convex shape are inserted at the lower end of the antenna rod 1 so as to be centered on the hinge shaft 8. It is assembled to be bent to the outside is provided with a feed unit (3) for transmitting the received radio signal to the terminal and supporting the antenna.

The feed section 3 is built with a spring guide and a leaf spring for holding the groove (4) therein. Here, the spring guide 10 has one end torn by several feet 13 to have flexibility, and a cylindrical leaf spring 9 is mounted on the outside to give elasticity. The feeder 3 supports the antenna. And it is a part that transmits the received signal to the terminal to install a cylindrical spring therein or add a separate fixing means, such as the part commonly used in the conventional technology and put out that it can have a variety of forms.

The groove 4 has a U-shaped hinge groove 4 'to insert the insertion portion 5 therein. When the antenna is pulled out, the groove part 4 is inserted into the spring guide 10 in the feed part 3 and is inserted into it, and rotational support force is generated by the elasticity of the cylindrical plate spring 9 installed outside the spring guide 10. Done. In general, the groove 4 to be inserted and inserted has a circular cross section so that the spring guide 10 and the leaf spring 9 are radially opened when inserted into the spring guide 10. However, in the exemplary embodiment of the present invention, as shown in FIG. 7, the spring guide 10 and the leaf spring 9 are arranged as shown in FIG. 6 by varying the horizontal and vertical ratios of the end faces 7 of the grooves 4. Deformation in an elliptical form provides a cause that can be deformed with less force than deformed in the radial direction. In addition, in the radial direction, the rotation is supported only by the frictional force of the contact surface, but in one embodiment of the present invention, not only the frictional force of the contact surface but also the deformation force of the spring guide 10 and the leaf spring 9 must be considered together. Therefore, the rotational support force is increased. This provides a principle that the insertion force is small while the rotational support is improved.

In addition, the bent portion 11 may be added to the middle of the groove 4 to detect that the antenna is completely pulled out when the antenna is drawn out.

In addition, the wedge portion 12 may be placed at the end of the groove portion 4 so that the wedge effect may be caused when the antenna is pulled out.

An elastic member 16 and a ball 17 are installed inside the groove 4 so that the ball 17 is pushed up by the elastic force of the elastic member 16 to be fitted into the latch groove 15 of the insertion part 5. In order to control the angle intermittently, rollers or cylindrical rods may be used instead of balls, which is a common method applied to existing swivel antennas.

The antenna rod 1 includes a general retractable antenna rod for a terminal and includes a multi-stage stretchable antenna rod, a whip antenna rod, and an antenna rod having an intermediate coil.

Since the inserting portion 5 may be worn on the groove-shaped surface on which the plurality of latch grooves 15 are formed when the angle is adjusted, heat treatment is generally performed to improve surface hardness to reduce wear. Increasing the outer surface of the concave-convex portion of the insert portion 5 by a linear step may cause damage. Thus, when the circular step 14 is processed as shown in FIG. 4, the strength of the cut surface may be improved.

The present invention described above is not limited to the above-described embodiment and the accompanying drawings, and various substitutions, modifications, and alterations are possible within the scope without departing from the technical spirit of the present invention. It is evident to those who have knowledge of. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined not only by the claims below, but also by the equivalents of the claims.

As described above, according to the present invention, when the groove is inserted into the spring guide by applying a groove having a cross section having a vertical ratio and a horizontal ratio, the spring guide and the leaf spring are elliptically deformed so that the insertion force is small but the rotational support force is maintained. By doing so, the user's dissatisfaction can be eliminated and damage to the antenna can be prevented in advance.

Claims (8)

In the antenna for the terminal which can adjust the angle A groove portion 4 having a hinge groove 4 'and having a shaped cross-sectional portion 7 of a cross section different in width and length, An insertion portion 5 inserted into the groove portion 4 and having a groove-shaped surface formed of a plurality of latch grooves 15; A hinge shaft 8 installed through the groove portion 4 and the insertion portion 5; Swivel antenna for mobile communication terminal comprising an antenna rod (1) connected to the sanji inserting portion (5) The method of claim 1, Swivel antenna for mobile communication terminal, characterized in that the circular step 14 on the outer surface of the uneven portion of the insertion portion 5 The method of claim 1, Swivel antenna for mobile communication terminal, characterized in that the bent portion 11 in the groove portion (4) The method of claim 1, Swivel antenna for mobile communication terminal, characterized in that the wedge portion 12 is provided at the end of the groove portion (4) The method of claim 2, Swivel antenna for mobile communication terminal, characterized in that the bent portion 11 in the groove portion (4) The method of claim 2, Swivel antenna for mobile communication terminal, characterized in that the wedge portion 12 is provided at the end of the groove portion (4) The method of claim 5, wherein Swivel antenna for mobile communication terminal, characterized in that the wedge portion 12 is provided at the end of the groove portion (4) The method of claim 3, wherein Swivel antenna for mobile communication terminal, characterized in that the wedge portion 12 is provided at the end of the groove portion (4)

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