KR20070029474A - Reduction gears and personal portable device including reduction gears - Google Patents

Abstract

A reduction gear box and a personal portable terminal including the reduction gear box are provided to realize the reduction gear box which delivers a rotating force of a driving motor to a camera by using a parallel array structure, thereby solving a problem that a position of the camera is inclined to one side. A terminal body(102) is equipped. A camera(110) is mounted on the terminal body(102). A driving motor(140) rotates the camera(110). A reduction gear box(120) is disposed in parallel in a side portion of the driving motor(140), and consists of a reduction driving shaft(121) interlocked with a motor output shaft(142) of the driving motor(140) and a reduction output shaft(122) interlocked with a rotating shaft(112) of the camera(110).

Description

REDUCTION GEARS AND PERSONAL PORTABLE DEVICE INCLUDING REDUCTION GEARS}

1 is a partial cross-sectional view for explaining a conventional mobile phone.

2 is a schematic diagram illustrating a personal portable terminal according to a first embodiment of the present invention.

3 is a cross-sectional view for explaining a reduction gearbox.

Figure 4 is a side cross-sectional view for explaining the reduction gearbox.

5 is a schematic diagram illustrating a personal portable terminal according to a second embodiment of the present invention.

6 is a cross-sectional view for explaining the intermediate gearbox.

7 is a cross-sectional view of a camera driving module for explaining a third embodiment of the present invention.

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

100: personal portable terminal 110: camera

112: camera rotation axis 120: reduction gear box

121: Deceleration drive shaft 122: Deceleration output shaft

140: drive motor 142: drive motor output shaft

150: planetary reducer 151: planetary gear set

152 ： Sun gear 153 ： Planetary gear

154 ： ring gear 260 ： intermediate gearbox

261: first drive gear 262: first driven gear

264: First transmission shaft 265: Second transmission shaft

300: camera drive module

The present invention relates to a personal portable terminal, and relates to a personal portable terminal including a reduction gear box.

Recently, most mobile phones are generally equipped with a camera, and research on the camera has been actively conducted. In particular, by providing a gearbox including a gear that is mounted adjacent to the camera mounted on the mobile phone to transmit the rotational speed and torque of the motor to the camera, the camera can be controlled such as automatic rotation, rotation angle and speed. The research on the gear structure which can be done is done.

1 is a perspective view for explaining a conventional mobile phone.

Referring to FIG. 1, the conventional mobile phone 1 includes a camera set 10, a gear box 20 and a DC motor 30 capable of transmitting a rotation speed and a torque to the camera. do.

The camera set 10 includes a camera housing 11 to facilitate mounting the camera 12 on top of a mobile phone, which is generally the location where the camera is mounted. The camera housing 11 is rotatably mounted in the mobile phone 1, and the camera 12 is mounted in the camera housing 11 so that the camera housing 11 can rotate together when the camera housing 11 rotates.

In addition, a gear structure for transmitting the rotational force of the direct-current motor 30 and the direct-current motor 30 to provide power is applied. The gear box 20 that transmits the power of the DC motor 30 has a series planetary gear arrangement having a series structure. Therefore, the camera set 10 may rotate by receiving the power of the DC motor 30 through the gear box 20.

However, the arrangement of the planetary gears of the gear box 20 having such a series structure has a structure of 10 mm due to the arrangement structure and technical limitations, and the camera set 10 is located at the upper horizontal position of the mobile phone 1. There is a limitation that the mounting position of the camera set 10 must be biased to one side. In addition, there is a limitation in controlling the rotation speed of the camera set 10 and the rotation of the camera set 10 within the conditions of using the mobile phone 1 due to the characteristics of the DC motor 30 to satisfy the constant speed and the energizing conditions.

One object of the present invention for solving the above problems is to use a structure in which the reduction gearbox for transmitting the rotational force of the drive motor in parallel to the camera mounted on the personal portable terminal, by using the structure of the camera biased to one side It is to provide a personal portable terminal that can solve the problem of increasing the overall width of the terminal.

In addition, another object of the present invention is to provide a personal portable terminal capable of implementing constant speed and energy in the camera within the limits of the speed control of the camera and the conditions of using the personal portable terminal due to the characteristics of the DC motor.

In addition, another object of the present invention to provide a personal portable terminal capable of precise control of the camera using the reduction gear box according to the present invention.

In addition, another object of the present invention is to provide a personal portable terminal capable of realizing a subject tracking function by enabling precise control of a camera mounted on the personal portable terminal.

In addition, another object of the present invention is to provide a personal handheld terminal which allows a user to easily determine the position of the camera by applying a constant restraining force (reverse torque) when the user manually rotates the camera.

In addition, another object of the present invention is to provide a personal portable terminal which can easily fix the position of the camera by a certain binding force acting on the camera by the reduction gear box according to the present invention.

According to a preferred embodiment of the present invention for achieving the above object of the present invention, the personal portable terminal comprises a camera, a drive motor and a reduction gearbox.

The camera may generally be mounted on an upper portion of the terminal body of the personal mobile terminal, and a driving motor for rotating the camera may be mounted adjacent to the camera. In addition, the reduction gear box including a reduction output shaft that cooperates with the rotation axis of the camera is arranged in parallel on the side of the drive motor.

First, a terminal body in which a camera, a driving motor, and a reduction gear box are mounted may generally have a key input unit formed on a front surface thereof, and a user may input a desired number or letter through the key input unit. In addition, a key input sensor unit may be provided inside to detect a content input by a user, and a rear portion may be provided in which a battery or the like is mounted.

In more detail, the terminal body may include a case including internal terminal functions, internal and external components, and a circuit configuration. For example, in the case of a mobile phone, the terminal body may include a terminal case, a key input unit, a display module, a wireless transmission / reception module, a battery, a microphone and a receiver. In addition, the terminal body may be formed in various types of styles such as a bar type, a flip type, a folding type, a slide type, and a swing type.

The reduction gearbox may include a planetary reducer having a planetary gear set disposed coaxially therein.

In the present specification, the planetary reducer includes an initial sun gear interlocked with an output shaft of a drive motor, and at least one transmission sun gear and a final sun gear coaxially with the first sun gear. And at least one first planetary gear, a transmission planetary gear and an end that rotate about the first sun gear, the transmission sun gear and the final sun gears, and transmit power between adjacent first sun gear, the transmission sun gear and the final sun gear. The planetary gears are included, and the final planetary gear includes a deceleration output shaft that cooperates with the camera. And, the first sun gear, the transmission sun gear, the last sun gear, the first planetary gear, the transmission planetary gear and the last planetary gear are accommodated in the hollow speed reduction housing. The inner surface of the reduction housing includes a first gear, a transmission planetary gear, and a final gear gear corresponding to the first planetary gear, the transmission planetary gear, and the final planetary gear, respectively. Can be used.

In addition, the planetary gear set is a term referring to a unit (UNIT) consisting of a sun gear interposed inside the planetary reducer, a planetary gear rotating around the sun gear and a ring gear containing planetary gears and rotating with the planetary gear. Can be defined

In addition, the personal portable terminal according to the present invention may further intervene an intermediate gearbox between the output shaft and the reduction drive shaft of the drive motor.

The intermediate gearbox is equipped with at least one transmission shaft parallel to the output shaft of the drive motor and the reduction drive shaft in the intermediate gearbox, and the output shaft, the transmission shaft, and the reduction drive shaft of the driving motor are gears composed of a drive gear and a driven gear that can each reduce speed. Functionally connected by pairs. Thus, the intermediate gearbox can reduce the rotational speed of the motor transmitted to the camera along with the reduction gearbox.

The intermediate gearbox and the reduction gearbox allow fine control of the rotational force, rotational speed, and rotational angle of the motor transmitted to the camera, thereby enabling fine control of the rotational force, rotational speed, and rotational angle of the camera. Therefore, the terminal body of the personal mobile terminal according to the present invention further includes an automatic control device, so that the camera automatically tracks a subject during video calls and shootings by the automatic control device. That is, the automatic tracking function (AUTO TRACKING) ) Can be implemented. In addition, the reduction gear box including a reduction output shaft that is linked to the rotation axis of the camera is disposed in parallel on the side of the drive motor can solve the problem that the position of the conventional camera is biased to one side or the overall width of the terminal increases.

In the present specification, a personal portable device (Personal Portable Device) is a PDC (Personal Digital Cellular) phone, PCS (Personal Communication Service) phone, PHS (Personal Handyhphone System), CDMA-2000 (1X, 3X) phone, WCDMA (Wideband) Mobile communication devices such as CDMA) phones, Dual Band / Dual Mode phones, Global Standard for Mobile (GSM) phones, Mobile Broadband System (MBS) phones, Digital Multimedia Broadcasting (DMB) phones, mobile phones, etc. Personal digital assistants (PDAs), hand-held PCs, notebook computers, WiBro terminals, smart phones, MP3 players, and international roaming services and extensions A portable electric and electronic device, which means all kinds of handheld-based wireless communication devices including an International Mobile Telecommunication-2000 (IMT-2000) terminal for providing a mobile communication service, comprising: a code division multiplexing access (CDMA) module, Bluetooth Module, an infrared communication module (IrDA), a wired / wireless LAN card, and a predetermined communication module such as a wireless communication device equipped with a GPS chip to enable location tracking through GPS, and a predetermined communication module for performing a multimedia playback function. Equipped with a microprocessor can be used as a general term for a terminal having a predetermined computing power.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, but the present invention is not limited or limited by the embodiments.

Example 1

Figure 2 is a schematic diagram for explaining a personal portable terminal according to a first embodiment of the present invention, Figure 3 is a cross-sectional view in the III-III direction for explaining the reduction gear box of Figure 2, Figure 4 is a reduction gear box It is a side cross-sectional view for demonstrating.

2 to 4, the personal mobile terminal 100 according to the present invention includes a camera 110, a drive motor 140, and a reduction gearbox 120.

The camera 110 may be mounted on the terminal body 102 of the personal portable terminal 100, and the driving motor 140 for rotating the camera 110 is mounted adjacent to the camera 110.

In addition, the reduction gear box 120 including the reduction output shaft 122 that cooperates with the camera rotation shaft 112 is disposed in parallel on the side of the driving motor 140. The reduction gearbox 120 includes a planetary reducer 150 in which a planetary gear set 151 is disposed on the same axis line.

The planetary reducer 150 includes a sun gear 152 that interlocks with the drive motor output shaft 142 of the drive motor 140, and a planetary gear 153 that rotates around the sun gear 152 and the sun gear 152. The planetary gear 153 includes a deceleration output shaft 122 that is connected to and interlocked with the camera 110. In addition, the sun gear 152 and the planetary gears 153 are accommodated in a hollow reduction gear housing (not shown), and an inner surface of the reduction gear housing includes a ring gear 154 corresponding to the planetary gear 153. Therefore, the rotation speed of the drive motor 140 can be reduced.

For example, assuming that the diameter of the sun gear is 20mm and the diameter of the planetary gear is 5mm, the rotation speed of one planetary gearset including the sun gear, the planetary gear and the ring gear is reduced to 1/4.

In this embodiment, the planetary reducer 150 having one planetary gearset 151 is used, but the number of planetary gearsets is based on the degree to which the producer wants to reduce the speed that the producer wants to transfer from the driving motor to the camera. The number of gear sets can be increased or decreased.

In more detail, the planetary reducer may include an initial sun gear that cooperates with an output shaft of the drive motor and at least one transmission sun gear that is coaxial with the original sun gear. And at least one first planetary gear, a transmission planetary gear and a final planetary gear which rotates about the first sun gear, the transmission sun gears, and transmits power between adjacent first sun gears, the transmission sun gears, and the final planetary gears. The gear may induce rotation of the camera, including a deceleration output shaft that cooperates with the camera.

And, the first sun gear, the transmission sun gear, the first planetary gear, the transmission planetary gear and the final planetary gear are accommodated in the hollow reduction gear housing, and the inner surface of the reduction housing has the first planet gear, the transmission planet gear and the final planet gear, respectively. It is possible to slow down the rotational speed of the drive motor, including the corresponding initial, transmission and final ring gears.

For reference, the planetary gearset refers to a unit (UNIT) consisting of a sun gear interposed inside the planetary reducer, a planetary gear that rotates in engagement with the sun gear and a ring gear that contains planetary gears and rotates in engagement with the planetary gear.

In addition, in the present embodiment, a specific connection method of the drive motor output shaft 142 and the reduction drive shaft 122 is not limited. However, the connection is connected to the connection belt and the drive motor output shaft and the deceleration drive shaft which circulate the drive motor output shaft and the deceleration drive shaft. It may be made of gears that are mounted and meshing with each other. In addition, in the present embodiment, the deceleration output shaft 122 that cooperates with the camera rotation shaft 112 may be provided as a substantially formed shaft.

Accordingly, the reduction gearbox 120 disposed in parallel on the side of the driving motor 140 enables the fine control of the rotational force, the rotational speed and the rotation angle of the driving motor 140 transmitted to the camera 110. Fine control of the rotational force, rotational speed and rotational angle of 110 is possible. Accordingly, the terminal body of the personal mobile terminal according to the present invention further includes an automatic control device (not shown), so that the camera automatically tracks the subject during the video call and shooting by the automatic control device. AUTO TRACKING can be implemented.

In addition, the personal portable terminal 100 according to the present invention uses a structure in which the reduction gear box 120 for transmitting the rotational force of the driving motor 140 to the camera 110 in parallel, the position of the conventional camera is This can solve the problem of shifting to one side or increasing the width of the terminal as a whole.

Example 2

5 is a schematic view for explaining a personal portable terminal according to a second embodiment of the present invention, Figure 6 is a cross-sectional view for explaining an intermediate gearbox.

5 and 6, the personal mobile terminal 200 according to the present invention includes a camera 210, a driving motor 240, a reduction gearbox 220, and an intermediate gearbox 260.

In the personal portable terminal 200 according to the second embodiment, the camera 210, the driving motor 240, and the reduction gearbox 220 are the camera 110, the driving motor 140, and the reduction gearbox of the first embodiment ( Substantially the same as 120). Therefore, the description of the camera 210, the drive motor 240 and the reduction gearbox 220 in the second embodiment of the camera 110, the drive motor 140 and the reduction gearbox 120 of the first embodiment Reference may be made to the description and drawings, and repeated content may be omitted.

However, in the second embodiment of the present invention, the intermediate gearbox (between the drive motor output shaft 242 and the reduction drive shaft 221 to further reduce the rotational speed or adjust the rotational force of the drive motor 240 according to the manufacturer's intention ( 260 is further provided.

The intermediate gearbox 260 is equipped with two transmission shafts parallel to the drive motor output shaft 242 and the reduction drive shaft 221 in the intermediate gearbox 260, and the drive motor output shaft 242, the transmission shaft and the reduction drive shaft are It is functionally connected by a gear pair consisting of a drive gear and a driven gear, respectively, capable of deceleration.

In more detail, the intermediate gearbox 260 is equipped with a first drive gear 261 at one end of the drive motor output shaft 242. The first drive gear 261 is engaged with the first driven gear 262 which is placed at one end of the first transmission shaft 264 parallel to the drive motor output shaft 242.

In addition, the second driving gear 263 that rotates together with the first driven gear 262 is again mounted on one end of the second transmission shaft 265 parallel to the drive motor output shaft 242. )

In addition, the third drive gear 267 that rotates together with the second driven gear 266 meshes with the third driven gear 268 connected to the reduction drive shaft 221.

Therefore, the rotation speed of the deceleration drive shaft 221 can be decelerated. At this time, the first driven gear 262 is larger in diameter than the second drive gear 263, the rotational speed is reduced, the reduction ratio is the diameter ratio of the first driven gear 262 and the second drive gear 263. Therefore, it changes.

Similarly, the second driven gear 266 has a smaller diameter than the third drive gear 267 so that the rotational speed is reduced, and the reduction ratio is equal to the diameter ratio of the second driven gear 266 and the third drive gear 267. Therefore, it changes. For reference, in the present embodiment, the deceleration output shaft 222 that cooperates with the camera rotation shaft 212 is integrally formed.

Accordingly, the reduction gearbox 220 disposed in parallel on the side of the driving motor 240 has the rotational force, rotational speed and rotational angle of the driving motor 240 transmitted to the camera 210 together with the intermediate gearbox 260. By enabling the fine control of the fine control of the rotational force, the rotational speed and the rotation angle of the camera 210 is possible. Therefore, the terminal body of the personal mobile terminal according to the present invention further includes an automatic control device, so that the camera automatically tracks a subject during video calls and shootings by the automatic control device. That is, the automatic tracking function (AUTO TRACKING) ) Can be implemented.

In addition, the personal portable terminal 200 according to the present invention is arranged in parallel to the reduction gear box 220 for transmitting the rotational force of the drive motor 240 to the camera 210, or the position of the conventional camera is biased to one side Overall, the problem of increasing the width of the terminal can be solved.

Example 3

7 is a cross-sectional view for describing a camera driving module according to a third embodiment of the present invention.

Referring to FIG. 7, the camera driving module 300 according to the present invention includes a driving motor 340, a first deceleration member 320, and a second deceleration member 360.

The driving motor 340 of the camera module 300 according to the third embodiment is substantially the same as the camera 110 and the driving motor 140 of the first embodiment, respectively.

First, the driving motor 340 includes a magnet 348 and a coil unit 349 and is mounted in the terminal body adjacent to a camera module (not shown) rotatably mounted to the terminal body, thereby rotating the camera module. Provides power for

The first deceleration member 360 includes a first drive gear 361 mounted on the motor output shaft 342 of the drive motor 340, a first driven gear 362 engaged with the first drive gear 361, and a first driven member. A second drive gear 363 rotating coaxially with the gear 362 and a second driven gear 364 engaged with the second drive gear 363 for secondary deceleration.

The second reduction member 320 may include a first sun gear 352 rotating about the same axis as the second driven gear 364 and at least one first planetary gear rotating around the first sun gear 352 ( 353, a second sun gear 372 rotating together with the first planetary gear 353, at least one second planetary gear 373 rotating around the second sun gear 372, and a second planetary gear ( And a deceleration output shaft 322 that rotates with 373. The first and second sun gears 352 and 372 and the first and second planetary gears 353 and 373 are accommodated in the hollow speed reduction housing 380. In addition, first and second ring gears 354 and 374 corresponding to the first and second planetary gears 353 and 373 are formed on the inner surface of the reduction housing 380, respectively.

The personal handheld terminal according to the present invention can provide a personal handheld terminal that can solve the problem that the position of the camera is biased to one side by providing a reduction gearbox for transmitting the rotational force of the driving motor to the camera by using a parallel arrangement. .

In addition, the personal portable terminal according to the present invention has the effect of reducing the horizontal length of the personal portable terminal by the reduction motor module mounted on the upper portion of the terminal body.

In addition, the personal portable terminal according to the present invention may provide a personal portable terminal capable of implementing constant speed and energy in the camera within the limits of the speed control of the camera and the conditions of using the personal portable terminal due to the characteristics of the DC motor.

In addition, the personal portable terminal according to the present invention can easily control the rotational speed of the drive motor transmitted to the camera using the reduction gear box can provide a personal portable terminal capable of precise control of the camera.

In addition, by enabling the precise control of the camera mounted on the personal portable terminal according to the present invention can provide a personal portable terminal that can implement a subject tracking function.

In addition, the personal handheld terminal of the present invention can easily determine the position of the camera by a certain restraining force (reverse torque) when the user manually rotates the camera.

In addition, it is possible to provide a personal portable terminal capable of automatically fixing the position of the camera by a certain binding force acting on the camera by the reduction gear box according to the present invention.

As described above, although described with reference to the preferred embodiment of the present invention, those skilled in the art various modifications and variations of the present invention without departing from the spirit and scope of the invention described in the claims below I can understand that you can.

Claims (13)

Terminal body; A camera mounted to the terminal body; A drive motor for rotating the camera; And A reduction gear box disposed in parallel on the side of the driving motor and including a deceleration drive shaft interlocked with a motor output shaft of the drive motor and a deceleration output shaft interlocked with a rotation shaft of the camera; Personal mobile terminal comprising a. The method of claim 1, The reduction gear box is a personal portable terminal, characterized in that the planetary gear set includes a planetary reducer disposed on the same axis line therein. The method of claim 1, A transmission gearbox is further interposed between the output shaft of the drive motor and the reduction drive shaft, and at least one transmission shaft parallel to the output shaft of the drive motor and the reduction drive shaft is mounted in the intermediate gearbox. The output shaft, the transmission shaft and the deceleration drive shaft is a personal portable terminal, characterized in that functionally connected by a gear pair consisting of a drive gear and a driven gear capable of deceleration, respectively. The method of claim 1, The terminal body further includes an automatic control device, characterized in that the camera automatically tracks the subject by the automatic control device. Terminal body; A camera module rotatably mounted to the terminal body; A driving motor mounted in the terminal body adjacent to the camera module and providing power for rotating the camera module; A first drive gear mounted to the motor output shaft of the drive motor, a first driven gear meshed with the first drive gear, a second drive gear rotating coaxially with the first driven gear, and the second for second deceleration A first reduction member including a second driven gear engaged with the drive gear; And A first sun gear that rotates about the same axis as the second driven gear, at least one first planetary gear that rotates about the first sun gear, a second sun gear that rotates with the first planetary gear, the At least one second planetary gear that rotates about a second sun gear, a reduction output shaft that rotates with the second planetary gear and interlocks with the camera module, wherein the first and second sun gears and the first First and second planetary gears are accommodated in the hollow speed reduction housing, and an inner surface of the speed reduction housing includes: a second reduction member having first and second ring gears corresponding to the first and second planetary gears, respectively; Personal mobile terminal comprising a. The method of claim 5, The first driving gear is smaller in diameter than the first driven gear, and the second driving gear is also smaller than the diameter of the second driven gear. The method of claim 5, And the drive motor and the first deceleration member are formed in the deceleration housing. A driving motor for rotating the camera mounted to the terminal body; And A reduction gear box disposed in parallel on the side of the driving motor and including a deceleration drive shaft interlocked with a motor output shaft of the drive motor and a deceleration output shaft interlocked with a rotation shaft of the camera; Includes, wherein the drive motor and the reduction gear box camera driving module, characterized in that formed in one reduction housing. The method of claim 8, The reduction gearbox comprises an initial sun gear in coordination with an output shaft of the drive motor and at least one transmission sun gear and a final sun gear coaxial with the first sun gear, At least one first planetary gear, transmission planetary gear and final planetary gear which rotates around the first sun gear, the transmission sun gear and the final sun gears, and transfers power between adjacent first sun gear, the transmission sun gear and the final sun gear. Wherein the final planetary gear includes a deceleration output shaft that cooperates with the camera, The first sun gear, the transmission sun gear, the last sun gear, the first planetary gear, the transmission planetary gear and the last planetary gear are accommodated in the hollow speed reduction housing, and the inner surface of the reduction housing has the first planetary gear, transmission planetary gear and A camera drive module comprising an initial, transmission and final ring gear respectively corresponding to a final planetary gear. The method of claim 8, A transmission gearbox is further interposed between the output shaft of the drive motor and the deceleration drive shaft, and the output shaft of the drive motor and the reduction drive shaft are interconnected in the transmission gearbox, and the transmission gearbox includes a An initial drive gear mounted to the output shaft and at least one transmission drive gear and a final drive gear that are parallel to the initial drive gear, the transmission drive gear including a driven gear rotating about the same axis, the driven And gears each engaging the adjacent first, forward and final gears. A driving motor mounted in the terminal body adjacent to a camera module rotatably mounted to the terminal body, the driving motor providing power for rotating the camera module; A first drive gear mounted to the motor output shaft of the drive motor, a first driven gear engaged with the first drive gear, a second drive gear rotating on the same axis as the first driven gear, and a second drive for secondary deceleration A first deceleration member including a second driven gear engaged with the gear; And A first sun gear that rotates about the same axis as the second driven gear, at least one first planetary gear that rotates about the first sun gear, a second sun gear that rotates with the first planetary gear, the At least one second planetary gear that rotates about a second sun gear, and a deceleration output shaft that rotates with the second planetary gear, wherein the first and second sun gears and the first and second planetary gears A second deceleration member accommodated in the hollow deceleration housing, the inner surface of the deceleration housing having inner gears corresponding to the first and second planetary gears, respectively; Camera driving module comprising a. The method of claim 11, The first drive gear is smaller in diameter than the first driven gear, and the second drive gear is also smaller than the diameter of the second driven gear. The method of claim 11, And the drive motor and the first deceleration member are formed in the deceleration housing.

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