KR200192880Y1 - Automatic atenna system in portable radiotelephone - Google Patents

Abstract

The present invention relates to an automatic in / out antenna system in a mobile phone, comprising a drive motor having a motor gear and providing a power source; It has a bottom surface, and a plurality of fastening ends are provided in a predetermined position on the outer peripheral surface of the bottom surface to be fixed to the motor, a hole through which the motor gear penetrates in the center of the bottom surface, and is formed in a bent at right angles A bracket having a first and second free ends and having first and second holes coaxially formed in the bottom surface and the first and second free ends, respectively; A first roller assembled to a bottom surface of the bracket and a first hole at a first free end, the first roller having a gear to receive power of the motor gear, and configured of a triangular pyramid-shaped portion to maximize friction with the antenna; A second roller assembled to a bottom surface of the bracket and a second hole of a second free end and configured to be in contact with the antenna; A first elastic body installed between the bottom surface and the gear to provide a force in which the first roller is in close contact with the antenna; The antenna is installed between the bottom surface and the second roller, and the second roller is composed of a second elastic body providing a force in close contact with the antenna, thereby achieving stable antenna drawing / drawing.

Description

Auto In / Out Antenna System in Mobile Phone

The present invention relates to an automatic in / out antenna system of a mobile phone, and more particularly, to an automatic in / out antenna system that maximizes frictional force with an antenna when a load antenna is in / out.

1 is a perspective view showing a mobile phone in an on-hook state according to a conventional embodiment. 2 is a perspective view showing a mobile phone in an off-hook state according to a conventional embodiment. In the figure, a flip type mobile phone is shown.

In general, a call mode state in which a call can be made is called an off hook state, and a call standby mode state in which a call cannot be made is called an on hook state of a mobile phone.

As shown in Figures 1 and 2, such a mobile phone is roughly divided into a hinge device (not shown) for mechanically connecting the main body 100 and the flip cover 2000 and the main body 1000 and the flip cover 2000.

The main body 1000 is largely composed of an upper casing frame 1010 and a lower casing frame 1020. An antenna device 1001 is installed at one end of the main body, and an ear piece 1002 is positioned at the top of the main body. In addition, an LCD window 1003 is positioned below the ear piece 1002, and a keypad 1004 including a plurality of keys is arranged below the LCD window 1003. A microphone device 1005 is mounted below the keypad 1004, and a hinge device (not shown) is installed in an accommodating part 1006 in which the microphone device 1005 is embedded.

In this case, according to the conventional embodiment, when the flip cover 2000 is opened, the switch is automatically switched to the call mode, and the load antenna 1001b is automatically drawn out. When the flip cover 2000 is closed, the load antenna is automatically switched to the call standby mode and the rod antenna is automatically switched. It was a structure in which 1001b is automatically drawn into the main body.

As shown in Fig. 3, this automatic pull-in / out antenna system was installed right under the antenna housing 1001a.

The automatic in / out antenna system is installed in the lower casing frame 1020 by a separate fixing means (fixed using a fixing pin 452 and a separate bracket). In this case, in order to absorb vibrations generated when the motor is driven, a rubber-like elastic body 454 is added. In the automatic in / out antenna system, a pair of rollers 430 and 440 are driven by the driving of the motor 410, and thus the movement of the rod antenna 1001b is realized.

Referring to FIG. 4, the configuration of a conventional automatic draw / draw antenna system is as follows.

The conventional automatic draw-in / out antenna system includes a motor 410 (a coreless type DC motor), a pair of rollers 430 and 440 driven in conjunction with the motor 410, and a bracket 420 for fixing the rollers to the motor 410. .

The motor has a motor shaft, and rotates the motor shaft in a forward or reverse direction corresponding to the polarity of the power supply voltage supplied from the microprocessor. At this time, the outer circumferential surface of the motor shaft is overlaid with a rubber sheath to maximize friction and elastic force.

The bracket 420 is manufactured by bending, and has a base surface 421 to be assembled to the motor 410 around the rotational axis A1. The fastening end 423 is formed. By bending and soldering the fastening end 423, the bracket 420 is fixed to the motor 410.

In addition, the bracket 420 has free ends 424,425 having a bent shape at right angles to fix the rollers 430,440. The free ends 424 and 425 are manufactured by bending, and have coaxial holes for inserting the axes of the rollers.

One roller 430 is engaged with the motor shaft 411 of the motor, and the other roller 440 is engaged with one roller 430. The one roller 430 includes a portion 431 in contact with the motor shaft 411, the portion 432 in contact with the antenna, and the other roller 440 includes a portion 441 in contact with the roller 430 and a portion 442 in contact with the antenna. do. In this case, the diameters of the portions 432 and 442 in contact with the antenna are smaller than the diameters of the portions 431 in contact with the motor shaft 411. In such a configuration, the motor shaft 411 rotates about the axis A1, and then the roller 430 engaged with the motor shaft 411 rotates about the axis A2, and the other roller 440 engaged with the roller 430 rotates about the axis A3. It was a configuration that performs power transmission.

As shown in FIG. 5, when the motor 410 is driven, one roller 430 engaged with the motor shaft 411 rotates, and the other roller 440 engaged with the roller 430 rotates. As the pair of rollers 430 and 440 rotate, the rod antenna is pulled in and pulled out by a friction force generated on the outer circumferential surface between the rod antenna 1001b and the rollers 430 and 440. Since the frictional force generated by the engagement between the rollers 430 and 440 rotates in close contact, the loss of power transmission hardly occurs.

When the gear shaft 411 rotates clockwise, the roller 430 engaged with the gear shaft rotates counterclockwise, and the other roller 440 engaged with the roller rotates clockwise.

However, although the above-described conventional automatic pull-in / out antenna system has a roller made of an elastic material such as rubber, there is a limit in maximizing friction force with the antenna during antenna pull-in or pull-out. In particular, slipping occurs frequently during antenna insertion and withdrawal.

Furthermore, since the conventional rod antenna device does not have the same diameter size in the longitudinal direction, there is a limit to correspond.

In addition, when the antenna is drawn out, if an external force is applied to the rod antenna due to user's carelessness, the antenna may bend or a malfunction may occur in the pulling operation, thereby deteriorating antenna characteristics.

Due to the characteristics of mobile phones, it is required to be very resistant to drops and impacts, and to move antennas in and out of antennas, and to move antennas at a low power by minimizing frictional force due to the characteristics of portable devices. Or the need to withdraw was required.

The present invention has been made to solve the above-mentioned conventional problems, an object of the present invention to provide an automatic pull-in / pull-out antenna system that can cope with the external force applied to the load antenna during the antenna extraction or pull-in process.

Another object of the present invention is to provide an automatic pull-in / pull-out antenna system that can cope with the external force generated when contacting the roller due to the difference in diameter of the rod antenna.

Still another object of the present invention is to provide an automatic pull-in / out antenna system that seeks stable antenna movement by maximizing friction between the outer circumferential surface of the antenna and the first and second rollers.

In order to achieve the above objects, an embodiment of the present invention is a mobile phone equipped with an automatic pull in / pull out antenna system,

A drive motor having a motor gear and providing a power source;

It has a bottom surface, and a plurality of fastening ends are provided in a predetermined position on the outer peripheral surface of the bottom surface to be fixed to the motor, a hole through which the motor gear penetrates in the center of the bottom surface, and is formed in a bent at right angles A bracket having a first and second free ends and having first and second holes coaxially formed in the bottom surface and the first and second free ends, respectively;

A first roller assembled to a bottom surface of the bracket and a first hole at a first free end, the first roller having a gear to receive power of the motor gear, and configured of a triangular pyramid-shaped portion to maximize friction with the antenna;

A second roller assembled to a bottom surface of the bracket and a second hole of a second free end and configured to be in contact with the antenna;

A first elastic body installed between the bottom surface and the gear to provide a force in which the first roller is in close contact with the antenna;

It is composed of a second elastic body provided between the bottom surface and the second roller to provide a force in which the second roller is in close contact with the antenna.

1 is a perspective view showing a mobile phone in the on-hook state according to a conventional embodiment.

Figure 2 is a perspective view of a mobile phone in the off-hook state according to an embodiment of the prior art.

Figure 3 is a plan view showing a state in which the automatic pull in / pull out antenna system mounted on the lower housing according to a conventional embodiment.

Figure 4 is a perspective view showing an automatic pull in / out antenna system according to a conventional embodiment.

Figure 5 is a plan view showing the operation of the automatic pull in / pull out antenna system according to a conventional embodiment.

6 is a plan view showing a state in which the automatic pull in / pull out antenna system according to a first embodiment of the present invention is mounted.

Figure 7 is a perspective view showing an automatic pull in / out antenna system according to a first embodiment of the present invention.

Figure 8 is an exploded perspective view showing an automatic pull in / pull out antenna system according to a first embodiment of the present invention.

Figure 9 is a plan view showing the operation of the automatic pull in / pull out antenna system according to a first embodiment of the present invention.

Figure 10 is a perspective view showing an automatic pull in / pull out antenna system according to a second embodiment of the present invention.

Figure 11 is an exploded perspective view showing an automatic pull in / pull out antenna system according to a second embodiment of the present invention.

Figure 12 is a block diagram showing the operation of the automatic pull in / pull out antenna system according to a second embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

10: Driving motor 20: Bracket

30, 40, 70, 80: Roller 50, 60: First 1,2 Elastics

Hereinafter, with reference to the accompanying drawings will be described in detail the most preferred embodiment of the present invention. First, in describing each of the drawings, only the same components have the same reference numerals as much as possible even if shown on different drawings. In describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

6 is a plan view showing a state in which the automatic pull-in / out antenna system according to the first embodiment of the present invention is mounted in place of the lower casing frame.

7 is a perspective view showing an automatic pull-in / pull-out antenna system according to a first embodiment of the present invention.

8 is an exploded perspective view showing an automatic pull-in / out antenna system according to the first embodiment of the present invention.

As shown in FIG. 6, the automatic in / out antenna system according to the first embodiment of the present invention is installed directly under the antenna housing 1001a. This antenna system is secured to the bottom of the lower casing frame 1020 using separate fixing pins 452 and elastomer 454.

The antenna system operates in a normal off-hook state (the flip cover is open for a call), thereby drawing the rod antenna 1001a to the outside, and in the on-hook state (the call is closed and the flip cover is closed), the antenna system is operated. In operation, the rod antenna is led into the lower casing frame. In this antenna system, the driving motor 10 is a power source, and this power source is transmitted to the rollers 30 and 40 to move the antenna.

When the mobile phone of the present invention is applied to the flip-type mobile phone, the flip cover is switched to the call mode in the off-hook state, the antenna system draws the antenna, and the flip-closed on-hook state is switched to the call standby mode, The antenna system introduces an antenna.

Although the present invention is limited to a flip type mobile phone, the first embodiment of the present invention is equally applicable to a bar type and a holder type mobile phone.

The configuration of the automatic in / out antenna system is described in detail with reference to FIGS. 7 and 8 as follows.

In the automatic in / out antenna system, a pair of rollers 30 and 40 are installed by bracket 20 around a driving motor 10 which is a power source.

The drive motor 10 has a motor gear 101, the motor gear 101 meshes with the first roller 30 to transmit power. The first roller 30 provides the moving force of the antenna, and the second roller 40 in contact with the antenna rotates simultaneously.

Therefore, when the motor 10 rotates and the motor gear 101 rotates simultaneously, the first roller 30 rotates simultaneously, the antenna pulls in / takes out simultaneously, and the second roller 40 rotates simultaneously. do. The motor 10 rotates in the forward or reverse direction by the control action of the microprocessor.

The bracket 20 has a bottom surface 201, and has a hole 202 through which the motor gear 101 penetrates in the center of the bottom surface 201, and one side of the bottom surface 201 is bent at a right angle to assemble the first and second rollers 30 and 40. And first and second free ends 204,205.

The first and second free ends 204 and 205 each have holes 2041 and 2051 for fixing the rollers 30 and 40, and the bottom surface 201 has a hole coaxially with the holes 2041 and 2051, thereby providing two first and second holes. Rollers 30 and 40 are supported.

In addition, a plurality of fastening ends 203 are formed at a predetermined position on the outer circumferential surface of the bottom surface 201 of the bracket to be fixed to the driving motor 10. The fastening end 203 is subjected to a separate welding bracket 20 is firmly fixed to the drive motor 10.

The motor gear 101 rotates about the rotation axis A1, the gear 301 of the first roller is meshed with the motor gear 101 so as to be rotatable about the rotation axis A2, and the second roller 40 rotates about the rotation axis A3. .

The first roller 30 is provided between the bottom surface 201 and the first free end 204, and has a portion 302 in contact with the antenna on the upper side of the gear 301 located at the bottom of the first roller. The portion 302 in contact with the antenna is truncated.

The second roller 40 is provided between the bottom surface 201 of the bracket and the second free end 205 and has a portion 401 in contact with the antenna. The portion 401 in contact with the antenna of the second roller is truncated. As a result, the portions 302 and 401 in contact with the antennas of the first and second rollers have the same shape.

At this time, the first elastic body 50 is installed in the shaft 303 positioned between the gear 301 of the first roller and the bottom surface 201. The first elastic body 50 is most preferably a compression coil spring. The first roller 30 provides a force in close contact with the antenna when the antenna is pulled in / out.

In addition, a second elastic body 60 is installed on the shaft 402 located between the second roller 40 and the bottom surface 201. The second elastic body 60 is most preferably a compression coil spring. The second elastic body 60 provides a force for the second roller 40 to be in close contact with the antenna when the antenna is pulled in or pulled out.

As shown in Fig. 9, when the motor is driven, the motor gear rotates, the first roller 30 rotates by the motor gear, and the second roller 40 degrees rotates by friction with the antenna when the antenna pulls in / takes out. .

At this time, in order to maximize the friction force between the antenna and the first and second rollers 30 and 40, the first and second elastic bodies 50 and 60 are installed between the first and second rollers and the bottom surface. The first and second elastic bodies 50 and 60 provide a force in which the first and second rollers are in close contact with the antenna. In detail, the portions 302 and 401 in contact with the antennas of the first and second rollers may be truncated.

For example, if the frictional force between the antenna and the first and second rollers 30,40 is weak, the elastic force retained by the elastic bodies 50,60 is relatively stronger than the frictional forces. 2 The roller is pushed upward (arrow direction) to keep the sealed state between the antenna and the roller at all times.

On the contrary, when the friction force between the antenna and the first and second rollers 30 and 40 is too strong to interfere with the pulling / drawing action, the rollers move slightly downward because the friction force between the antenna and the roller is stronger than the elastic force of the elastic body.

As a result, a relative force difference occurs between the friction force between the rod antenna and the first and second rollers and the elastic force retained by the elastic body, so that the antenna and the first and second rollers are always in close contact and stable antenna insertion and withdrawal is possible. Do.

10 is a perspective view illustrating an automatic pull in / out antenna system according to a second exemplary embodiment of the present invention.

FIG. 11 is an exploded perspective view illustrating an automatic pull in / out antenna system according to a second exemplary embodiment of the present invention.

The configuration of the automatic in / out antenna system according to the second embodiment of the present invention will be described in detail with reference to FIGS. 11 and 12.

In the automatic in / out antenna system, a pair of rollers 70 and 80 are installed by the bracket 20 around the driving motor 10 as a power source.

The drive motor 10 has a motor gear 101, the motor gear 101 meshes with the first roller 70 to transmit power. The first roller 70 meshes with the second roller to power the second roller. By contacting the first and second rollers and the antenna, the antenna has a draw / draw operation. At this time, the motor rotates in the forward or reverse direction by the control action of the microprocessor.

The bracket 20 has a bottom surface 201, and has a hole 202 through which the motor gear 101 penetrates in the center of the bottom surface 201, and one side of the bottom surface 201 is bent at a right angle to assemble the first and second rollers 70,80. And first and second free ends 204,205.

The first and second free ends 204 and 205 each have holes 2041 and 2051 for fixing the rollers 70 and 80, and the bottom surface 201 has holes coaxially with the holes 2041 and 2051, thereby providing Rollers 70 and 80 are supported by brackets.

In addition, a plurality of fastening ends 203 are formed at a predetermined position on the outer circumferential surface of the bottom surface 201 of the bracket to be fixed to the driving motor 10. The fastening end 203 is subjected to a separate welding bracket 20 is firmly fixed to the drive motor 10.

The motor gear 101 rotates about the rotation axis A1, the gear 701 of the first roller 70 is engaged with the motor gear 101 so as to be rotatable about the rotation axis A2, and the second roller 80 is engaged with the first roller 70 Rotate around the axis of rotation A3.

The first roller 70 is composed of a gear 701 engaged with the motor gear to be powered, a portion 702 for transmitting power to the second roller, and a portion 703 for contacting the antenna. The portion 702 that transmits power of the first roller is cylindrical, and the portion 703 that contacts the antenna is truncated.

The second roller is installed between the bottom surface 201 of the bracket and the second free end 206, and is composed of a portion 801 which is engaged with the first roller to receive power, and a portion 802 which contacts the antenna. The portion 801 receiving the power of the second roller is cylindrical and the portion 802 in contact with the antenna is truncated. As a result, the portions 703,802 in contact with the antennas of the first and second rollers and the portions 702,801 engaging with each other have the same shape.

At this time, the first elastic body 50 is installed in the shaft 704 located between the gear 801 and the bottom surface 201 of the first roller. The first elastic body 50 is most preferably a compression coil spring. The compression coil spring 50 provides a force in close contact with the antenna when the first roller pulls in / out the antenna.

In addition, a second elastic body 60 is installed on the shaft 804 positioned between the second roller 80 and the bottom surface 201. The second elastic body 60 is most preferably a compression coil spring. The second elastic body 60 provides a force for the second roller 80 to be in close contact with the antenna when the antenna is pulled in / out.

As shown in Fig. 12, when the motor is driven, the motor gear rotates, the first roller 70 rotates by the motor gear, and the second roller also rotates by friction with the antenna when the antenna is pulled in / out.

At this time, in order to maximize the friction between the rod antenna and the first and second rollers 70 and 80, the first and second elastic bodies 50 and 60 are installed on a shaft located between the first and second rollers and the bottom surface. 2, the elastic body 50, 60 provides a force in which the first and second rollers 70, 80 are in close contact with the antenna. In detail, the portions 703 and 802 in contact with the antennas of the first and second rollers may be truncated.

For example, if the frictional force between the antenna and the first and second rollers 70,80 is weak, the first and second elastic bodies 50,60 are relatively stronger than the friction force. The first and second rollers 70 and 80 are pushed upwards (in the direction of the arrow) to maintain the sealed state between the antenna and the roller at all times.

On the contrary, when the frictional force between the antenna and the first and second rollers 70,80 is too strong to interfere with the pulling / out action, the rollers are stronger than the elastic force of the first and second elastic bodies 50,60. Slightly move downward

As a result, a relative force difference between the friction force between the rod antenna and the first and second rollers and the elastic force retained by the elastic body is generated, so that the antenna and the first and second rollers are always in close contact with each other, thereby stably loading / drawing the rod antenna. This is possible.

As described above, the present invention maximizes the friction between the rod antenna and the roller in the automatic pull-in / out antenna system of the mobile phone, so that the pull-in / take-out operation of the antenna can be stably implemented.

Claims (5)

A mobile phone equipped with an auto in / out antenna system, A drive motor having a motor gear and providing a power source; It has a bottom surface, and a plurality of fastening ends are provided in a predetermined position on the outer peripheral surface of the bottom surface to be fixed to the motor, a hole through which the motor gear penetrates in the center of the bottom surface, and is formed in a bent at right angles A bracket having a first and second free ends and having first and second holes coaxially formed in the bottom surface and the first and second free ends, respectively; A first roller assembled to a bottom surface of the bracket and a first hole at a first free end, the first roller having a gear to receive power of the motor gear, and configured of a triangular pyramid-shaped portion to maximize friction with the antenna; A second roller assembled to a bottom surface of the bracket and a second hole of a second free end and configured to be in contact with the antenna; A first elastic body installed between the bottom surface and the gear to always provide a force in which the first roller is in close contact with the antenna; A mobile antenna, which is installed between the bottom surface and the second roller, is composed of a second elastic body that provides a force in close contact with the antenna at all times. The method of claim 1, The first elastic body is the automatic coil in / out antenna system, characterized in that the compression coil spring. The method of claim 1, And the second elastic body is a compression coil spring. The method of claim 1, The inlet / outlet antenna system of the mobile phone, characterized in that the contact portion of the antenna of the second roller triangular pyramid type. The method of claim 1, And a portion for transmitting power to the first roller and the second roller, and a portion for receiving power.