KR19990042119U - Auto In / Out Antenna System of Mobile Phone - 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 shaft and a power source; It has a bottom surface, 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 shaft penetrates in the center of the bottom surface, and is formed in a bent at right angles Brackets having 1,2 free ends; A driving roller having a shaft having both ends assembled to a bottom surface of the bracket and a first free end, the driving roller including a portion receiving power of the motor shaft and a portion in contact with an antenna; A driven roller having a shaft assembled between a bottom surface of the bracket and a second free end, the driven roller being configured to receive a power of the fixed roller and a portion in contact with the antenna; And means for disconnecting power between the shaft of the driven roller and the portion in contact with the antenna in order to minimize the load generated between the antenna and the roller.

Description

Auto In / Out Antenna System of 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 which minimizes the load applied to an antenna by an external force generated during load antenna in / out.

Typically, the portable terminal refers to a portable device such as HHP, CT-2, PCS, and the like. At this time, such a portable device performs a communication function while performing wireless communication with the base station.

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 Figs. 1 and 2, such a mobile phone is roughly classified into a hinge device (not shown) for mechanically connecting the main body 1000 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, the pair of rollers for drawing in / out of such a rod antenna each have a power transmission portion about the shaft and a portion in contact with the antenna. These parts are rubber materials, and when the rollers are rotated, a force to be drawn in or drawn out by mutual frictional forces with the outer circumferential surface of the antenna is generated.

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-described problems, the object of the present invention to provide an automatic pull-in / out antenna system that can minimize the load generated between the antenna and the roller in the mobile phone.

Another object of the present invention is to provide an automatic draw / draw antenna system that can be driven at low power.

In order to achieve the above object, the present invention in the automatic pull in / out antenna system,

A drive motor having a motor shaft and being a power source;

It has a bottom surface, 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 shaft penetrates in the center of the bottom surface, and is formed in a bent at right angles Brackets having 1,2 free ends;

A rubber material driving roller having a shaft having both ends assembled to a bottom surface of the bracket and a first free end, the driving roller being configured to receive a power of the motor shaft and a portion contacting the antenna;

A driven roller having a shaft assembled between a bottom surface of the bracket and a second free end, the driven roller being configured to receive a power of the fixed roller and a portion in contact with the antenna; And

Means for interrupting power between the shaft of the driven roller and the portion in contact with the antenna in order to minimize the load generated between the antenna and the roller.

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

Figure 2 is a perspective view showing a mobile phone in the off-hook state according to an embodiment

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

4 is a diagram of an automatic pull in / out antenna system according to a conventional embodiment

Figure 5 is a cross-sectional view showing the configuration of the roller according to a conventional embodiment

Figure 6 is a perspective view showing an automatic pull in / out antenna system according to an embodiment of the present invention

7 is a cross-sectional view showing the configuration of the rollers according to an embodiment of the present invention

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

10: Driving motor 20: Bracket

30: drive roller 40: driven roller

410: bushing 420: bearing

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.

Figure 6 is a perspective view showing an automatic pull in / pull out antenna system according to an embodiment of the present invention.

7 is a cross-sectional view showing the configuration of the rollers according to an embodiment of the present invention.

The automatic drawing / drawing antenna system according to the preferred embodiment of the present invention includes a motor 10 (a coreless type DC motor), a drive roller 30 driven in conjunction with the motor 10, and a position facing the drive roller 30. Another driven roller 40 and a bracket 20 for fixing the rollers 30, 40 to the motor 10.

The motor 10 includes a motor shaft 101, and rotates the motor shaft 101 in a forward or reverse direction corresponding to the polarity of the power voltage supplied from the microprocessor. At this time, the outer circumferential surface of the motor shaft 101 is overlaid with a rubber sheath to maximize the friction and elastic force.

The bracket 20 is manufactured by bending, and has a bottom surface 201 in order to be assembled to the motor 10 around the rotating shaft A1, and a hole 202 through which the motor shaft 101 penetrates is formed in the bottom surface 201 of the bottom surface 201. A fastening end 203 formed by bending the outer peripheral surface is located. The fastening end 203 firmly fixes the bracket to the top 10 of the motor by performing welding or the like.

The bracket 20 has first and second free ends 204 and 205 which are bent at right angles to support the rollers 30 and 40. The first and second free ends 204 and 205 have coaxially facing holes 2041 and 2051 into which the rotating shafts of the rollers 30 and 40 are inserted.

The drive roller 30 assembled to the first free end 204 has a powered portion 301 transmitted from the motor shaft 101 and a portion 302 in contact with the antenna. The portion 301 in contact with the motor shaft 101 is cylindrical, and the portion 302 in contact with the antenna is also cylindrical. When the motor shaft 101 rotates on the rotating shaft A1, the driving roller 30 rotates on the rotating shaft A2.

The driven roller 40 positioned to face the driving roller 30 includes a portion 401 receiving power of the driving roller and a portion 403 in contact with an antenna, and a step 402 is formed below the portion 401 receiving power. . The portions 401, 402, 403 constituting the roller 30 are cylindrical.

A rubber material is most preferable for the power transmission parts 301 and 401 of the driving roller and the driven roller, and rubber materials for the parts 302 and 403 which contact the antennas of the driving roller and the driven roller are most preferred. As the two rollers 30 and 40 perform a rotation operation in the forward or reverse direction, the antenna is pulled in or pulled out.

As shown in FIG. 7, the driving roller 30 receives the power of the motor shaft 101 directly, and the driven roller 40 receives the power from the driving roller 30. Therefore, the driven roller 40 is required to perform a rotation operation by receiving the power of the driving roller 30 to the maximum. When the driven roller 40 performs the rotation operation in the idle state, and the shaft 404 serves to support the roller 40, it is possible to minimize the load generated when the antenna is pulled in or out.

Due to this necessity, the driven roller 40 is provided with a bushing 410 and a bearing 420 around the shaft 404. The bushing 410 is cylindrical and is installed between the shaft 404 and the portion 403 in contact with the antenna. The outer circumferential surface of the bushing 410 is attached to the inner surface of the portion 403 in contact with the antenna. The bearing 420 is installed at an inner surface of the bushing 410 and a shaft 404.

Furthermore, a cap holder 430 is assembled at the top of the shaft 404. The cap holder 430 serves as an axis of the driven roller, and is installed for assembling of the driven roller 40.

As a result, when the automatic draw / draw antenna system performs the operation, the driving roller 30 receives the power from the motor shaft 101 to perform the rotation operation, and performs the rotation operation of the driven roller 40 degrees, The shaft 404 does not perform a rotational operation. The rotational force to the shaft 404 is interrupted by the bearing 420. As a result, the load generated between the antenna and the rollers 30 and 40 can be minimized.

As a result, by minimizing the load generated between the antenna and the rollers, it is possible to drive the rollers at low power, and to extend the life of the automatic draw / draw antenna system.

On the other hand, in the detailed description of the present invention has been described with respect to specific embodiments, it will be apparent to those skilled in the art that various modifications are possible without departing from the scope of the present invention.

As described above, the present invention minimizes the load between the antenna and the roller during the load antenna in / out operation in the mobile phone, thereby allowing the antenna to be in or out with low power, and extends the life of the automatic in / out antenna system. Can be extended.

Claims (3)

In the automatic in / out antenna system, A drive motor having a motor shaft and being a power source; It has a bottom surface, 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 shaft penetrates in the center of the bottom surface, and is formed in a bent at right angles Brackets having 1,2 free ends; A driving roller having a shaft having both ends assembled to a bottom surface of the bracket and a first free end, the driving roller including a portion receiving power of the motor shaft and a portion in contact with an antenna; A driven roller having a shaft assembled between a bottom surface of the bracket and a second free end, the driven roller being configured to receive a power of the fixed roller and a portion in contact with the antenna; And And a means for interrupting power by being located between the shaft of the driven roller and a portion in contact with the antenna in order to minimize the load generated between the antenna and the roller. The method of claim 1, And an bushing is additionally installed between the driven roller and the means for interrupting power. The method of claim 1, The means for interrupting the power is a bearing, the automatic in / out antenna system of the mobile phone, characterized in that the configuration is installed at a predetermined position of the shaft of the driven roller.