JP2009191970A - Automatic swing mechanism and portable device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technique capable of easily performing a swing operation of a display or a restoration operation to a vertical position even when a hand not holding a portable device is occupied.
[Solution]
The present invention is a mechanism for automatically swinging the display of a foldable portable device to the left and right, and is provided with a pulley on a swing cam that can be rotated and moved up and down to fix the display, and is driven only during a swing operation. The belt is configured to contact the pulley.
[Selection] Figure 6

Description

  The present invention relates to a display automatic swing technology in a portable device having a small display such as a mobile phone, a smart phone, and a portable terminal (PDA: Personal Digital Assist).

  2. Description of the Related Art Conventionally, some mobile phones have the Internet, e-mail, or camera functions in addition to a call function as a simple telephone, and can take still pictures and videos. Recently, there has also been a digital TV broadcast reception function called “One Seg”, which has less noise than conventional analog radio waves. Is generally available for recording.

  In such a mobile phone environment, the conventional “vertical folding mobile phone” (the display is folded in a state where the display is vertically long) has a wide display range because the display is a vertical screen. Viewing video on the screen has the inconvenience of performing operations such as full screen display with the mobile phone itself facing sideways.

  In order to remedy these problems, mobile phones have been devised in which the display can be rotated or swung so that the display can be turned 90 degrees horizontally, returned to the vertical, or rotated about its axis. (For example, refer to Patent Documents 1 and 2).

However, since you have a mobile phone with one hand, you will rotate and swing with the other hand. If the other hand does not have a mobile phone, it will be part of your body. There is a problem that it is difficult to perform a swing operation because the display unit must be pressed against the screen to perform a swing or recovery operation.
Japanese Patent No. 3322021 Japanese Patent Laid-Open No. 2006-21576

  In order to solve the above-described problems, the present invention automatically performs a swing operation of the display and a recovery operation to a vertical position even when the hand not holding the portable device is occupied. Provide a swing mechanism.

  1st invention is the automatic swing mechanism of the display part in a portable apparatus, Comprising: The belt drive pulley which can rotate a drive belt to both right and left directions, the motor which drives the said belt drive pulley, and an ellipse A display support cam having a friction pulley fixed on a rotating wheel that can move up and down along the hole and rotate left and right; a drive belt disposed on the outer periphery with a gap so as not to contact the friction pulley; and On both sides of the friction pulley, there is provided a pressing pad arranged outside the driving belt so as not to contact the driving belt during non-swing operation, and the driving belt is brought into contact with the friction pulley by one of the pressing pads. When pressed, the friction pulley rises while rotating along the oblong hole, and the display unit moves horizontally at its lower end. While an automatic swing mechanism, characterized in that the swing in the direction of rotation of the belt drive pulley.

  That is, according to the first invention, in a portable device such as a vertical folding cellular phone, the display unit is fixed to a rotating wheel of a cam having a pulley that is rotated by a belt, and the pressing pad is pressed against the friction pulley. By automatically moving the display unit up and down along the oval holes and rotating left and right automatically by driving the motor, the display unit can be easily leveled to the right or left with one hand, and images that are difficult to see vertically It becomes possible to see horizontally.

  According to a second aspect of the invention, the pressing pads disposed on both sides of the friction pulley are fixed to a pressing pad frame that can be moved integrally, and the driving belt is exclusively pressed against the friction pulley. The present invention relates to an automatic swing mechanism described in the first invention.

  That is, according to the second invention, the display unit is horizontally swung to either the left or right by adopting a configuration in which either the left or right pressure pad exclusively holds the drive belt between the friction pulley. be able to.

  According to a third aspect of the present invention, a pin provided to operate integrally with the belt drive pulley that is a drive source of the drive belt contacts a moving spring attached to a central portion of the pressing pad frame during rotation. Accordingly, the present invention relates to the automatic swing mechanism according to the second aspect, wherein the pressing pad moves to the left or right to press the drive belt against the friction pulley.

  That is, according to the third aspect of the present invention, the projection pad provided on the drive source of the drive belt such as a worm wheel moves the pressing pad to the left or right to press the drive belt against the friction pulley. As a result, the display unit can be swung horizontally on either side.

  According to a fourth aspect of the invention, there is provided the automatic swing mechanism according to any one of the first to third aspects, wherein the pressing pad has a lock mechanism that can be stopped at a neutral position that does not contact the drive belt. About.

  That is, according to the fourth aspect of the invention, in order to stop the movement of the pressing pad in the neutral position where it does not come into contact with the drive belt, by providing a lock mechanism with a fitting structure or the like, the normal position when not swinging can be obtained. Easy to secure.

  According to a fifth aspect of the invention, the portable device includes switches that can be operated with one hand on both sides of the operation unit, and the display unit automatically swings in a direction in which the switch is pressed. The present invention relates to an automatic swing mechanism according to any one of the first to fourth inventions.

  That is, according to the fifth aspect of the invention, the switches of the push buttons and the like are arranged on both side surfaces of the operation unit, so that the left and right display swing can be easily realized even when one hand is occupied.

  A sixth invention relates to the automatic swing mechanism according to any one of the first to fourth inventions, characterized in that a mode for automatically swinging in conjunction with an application activated in the portable device is provided.

  That is, according to the sixth aspect of the invention, the automatic swing mode can be set, for example, in conjunction with the operation key in accordance with the activation of the application installed in the portable device. This gives a function suitable for TV display by one seg and camera photography.

  As described above, according to the present invention, in a portable device such as a mobile phone in which the display can swing or rotate left and right, the display can be automatically swung only by a button operation or the like. All operations can be completed. In addition, convenience can be improved by widening the display in conjunction with, for example, one-seg reception, camera shooting, GPS (Global Positioning System) function, etc. mounted on a portable device.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 shows a basic structure of a foldable mobile phone according to an embodiment of the present invention. This example shows a case where the present invention is applied to a so-called “foldable mobile phone” that can be folded in the vertical direction. In the “foldable mobile phone”, (a) shows a closed state, and (b) shows a vertically open state of the display unit. In the closed state (a), the back surface of the display unit 1 is exposed.

  The display unit 1 and the operation unit 2 are connected by a rotary hinge 3, and the rotary hinge 3 opens and closes the display unit 1 and the operation unit 2. The display unit vertical open state (b) shows the open state at the normal position during non-swing, and the display unit 1 having the display surface 100 and the operation unit 2 having the key operation surface 200 are in the vertical open state. ing.

  In the present invention, a switch that can be operated by one hand, such as a push button, is attached to the side of the operation unit 2, and the display unit 1 automatically swings to the right or left as the right or left switches 210 and 211 are pressed. And it becomes suitable for horizontal. The automatic swing mechanism unit 10 is provided with an automatic swing hinge module including a reverse heart cam, a belt drive pulley, a drive belt, a worm wheel, and a motor, which will be described later, in order to rotate the display unit 1 left and right. .

  FIG. 2 is a diagram showing an example of horizontal swing of the display unit by a switch operation in the folding mobile phone according to the embodiment of the present invention. As shown in the figure, switches 210 and 211 such as push buttons for swinging are provided on both side surfaces of the operation unit 2 of the mobile phone so as to swing in the direction in which the switch is pressed.

  2A shows a state in which the display unit 1 is swung to the right by the switch 210 on the right side, and FIG. 2B shows a state in which the display unit 1 is swung to the left by the switch 211 on the left side.

  When the display unit 1 is returned to the vertical position, it is realized by an operation such as pushing the switch to be returned once. In order to avoid malfunction, the switch is preferably provided with a slight depression so that the switch is turned on when pressed strongly with a finger.

  FIG. 3 is a diagram showing an example of horizontal swing of the display unit by application cooperation in the foldable mobile phone according to the embodiment of the present invention. This example shows an example in which any key button on the key operation surface 200 of the operation unit 2 is associated with an application installed in a mobile phone. When the button is pressed, the application is activated by the user and swings automatically when the horizontal screen is optimal.

  In FIG. 3A, when the user presses the “TV” button 220, the user can automatically swing right and view a one-segment broadcast or the like on a wide screen. In FIG. 3B, when the “camera” button 230 is pressed, the camera automatically starts to swing to the left and can immediately take a wide mode photograph or a moving image.

  As another example, when an application suitable for a horizontal screen, such as a shooting game by horizontal scrolling, is activated, for example, by linking with a selection input by a menu button on the screen, an optimal screen orientation on a swinging screen You can play with

  The automatic ON / OFF of the swing operation, the swing direction, and the like can be set independently by the user, and the mobile phone does not perform the swing operation without permission in an unintended scene.

  FIG. 4 shows an application example of the automatic display swing mechanism according to the embodiment of the present invention to a GPS mobile phone. This example is an example suitable for a mobile phone equipped with a GPS (Global Positioning System) function.

  4A shows a case where the vehicle travels straight and a long distance (normal position), FIG. 4B shows a case where the vehicle turns right (display unit right swing), and FIG. 4C shows a vehicle which turns left (display). Part left swing).

  Since the mobile phone has a vertical screen, you can see a wide map in the vertical direction, but the display range in the horizontal direction is narrow. For example, when a mobile phone is placed on a dashboard stand of a car and used like a navigation system, a self-position marker 110 indicating a self-position and a traveling direction 120 are shown. When turning right here, since the width of the mobile phone is narrow, the visibility of the traveling direction map becomes worse. Therefore, a swing screen corresponding to the traveling direction is realized by the automatic display swing mechanism of the present invention. That is, according to the detection signal when the angle of the self position changes, in the case of a right turn, the right position is swung and the self position 110 is shown, and the map visibility in the traveling direction 120 is significantly wider. If the straight-ahead distance is long as it is, the swing returns and the travel direction 120 and the self-position 110 are indicated. Similarly, in the case of a left turn, an automatic swing is performed and the traveling direction 120 and the self position 110 are displayed.

  This function can be used even when walking, and the map is displayed so that the direction of travel is always good, so convenience is improved.

  Next, the operation principle of the automatic swing mechanism of the present invention will be described with reference to FIGS.

  FIG. 5 is a diagram (cam position: lowermost part) showing the movement of the cam in the automatic swing hinge mechanism according to the embodiment of the present invention. This example shows a display mounting cam surface when the display unit 1 to be swung is mounted on the automatic swing mechanism unit 11, and when the display unit 1 is in a normal position when it is in a non-swing state (the cam rotation shaft 301 is (Located at the bottom of the oblong hole 302).

  On the cam surface attached to the display unit 1, the display unit 1 is fixed to the surface of a cam 300 (hereinafter referred to as an inverted heart-type cam) having a shape obtained by rotating a heart 180 degrees. It is in. The inverted heart-shaped cam 300 has a hollow cam rotation shaft 301, and the cam rotation shaft 301 is attached to the oblong hole 302, so that it can rotate and move up and down with respect to the cam frame 303.

  The inverted heart-shaped cam 300 moves along the cam guide shaft 304, thereby enabling the display unit 1 to be horizontally tilted (90-degree swing operation) in the left-right direction. An outer rail (not shown) is provided outside the cam guide shaft 304 on the display unit 1 side that covers the surface of the reverse heart cam 300 so that the reverse heart cam 300 does not come off the cam guide shaft 304. Is provided. Further, the cam rotation shaft 301 of the inverted heart-shaped cam 300 is pressed in the vertical direction (folding hinge direction) by a spring (not shown), and the posture of the display unit 1 is normally held in the vertical direction.

  FIG. 6 is a diagram for explaining the operation of the automatic display swing mechanism according to the embodiment of the present invention (cam position: bottom). FIG. 6 is a view of the display mounting cam surface shown in FIG. 5 as viewed from the back side, and shows a case where the display unit 1 is in a normal position when it is in a non-swing state.

  The inverted heart-shaped cam 300 is provided with a friction pulley 410 having a hole for wiring so that it can be rotated by the drive belt 400, and the drive belt 400 is provided with four pieces installed so as to surround the friction pulley 410. Five of the following pulleys 411 to 414 and a belt driving pulley (hidden behind the worm wheel 420) arranged at the lower part serving as a rotational driving source are stretched under a certain tension. The lower belt drive pulley is coaxially connected to the worm wheel 420, and the worm wheel 420 is controlled by a drive control unit 431 that controls rotation by using the motor 430 as a trigger for the left and right side switches 210 and 211 (see FIG. 2). It is rotating in the direction.

  FIG. 7 is a diagram (cam position: middle position) for explaining the operation of the display automatic swing mechanism according to the embodiment of the present invention. This example shows a case where the right pressing pad 401 in FIG. 7 is operated to swing the display unit 1 to the left, and the cam rotation shaft 301 of the inverted heart-shaped cam 300 moves to the middle position of the oblong hole 302. Shows the state.

  The pressure pads 401 and 402 for pressing the driving belt 400 against the friction pulley 410 are disposed symmetrically with a gap from the driving belt 400 when not swinging. Also, the pressing pads 401 and 402 are connected to the pressing pad frame on the left and right sides so as to be able to slide in the left and right direction. That is, the pressing pads 401 and 402 have a structure in which either the left or right is exclusively pressed against the friction pulley 410 with the drive belt 400 sandwiched by the force of the swing spring. The attachment of the left and right pressing pads 401 to the pressing pad frame and the operation of the swing spring will be described later with reference to FIGS.

  The swing operation in FIG. 7 will be described. When the worm wheel 420 is rotated in conjunction with the drive of the motor 430 by the drive control unit 431 in the direction in which the display unit 1 is to be swung (downwardly tilted), the belt drive pulley causes the drive belt 400 to rotate. , And a pin provided on the worm wheel 420 (a pressing pad moving pin 421 in FIG. 11 to be described later) is pressed, and the pad frame (a pressing pad frame 450 in FIG. 11) is slid in the rotating direction, and the right pressing pad 401 is pressed. However, the friction pulley 410 attached to the inverted heart-shaped cam 300 and the drive belt 400 are sandwiched. Then, the friction pulley 410 starts to move upward due to the friction of the drive belt 400.

  Here, the frictional force between the non-driving surface of the driving belt 400 and the pressing pad 401 is made of an extremely small material. On the other hand, the frictional force between the driving belt 400 and the friction pulley 410 of the belt driving pulley / reverse heart cam 300 is large. Therefore, the friction pulley 410 moves upward while rotating along the cam guide shaft 304 by the frictional force of the drive belt 400.

  FIG. 8 is a diagram (cam position: middle position) showing the movement of the cam in the automatic swing hinge mechanism according to the embodiment of the present invention. FIG. 8 shows the movement of the reverse heart-shaped cam 300 when the right pressing pad 401 in FIG. 7 is operated to swing the display unit 1 to the left, and the reverse heart-shaped cam 300 moves along the cam guide shaft 304. It shows a state where it is rising to the middle position of the oblong hole 302 while rotating. The cam guide shaft 304 is shown in a state where the cam guide shaft 304 is engaged with the right bulge portion of the inverted heart-shaped cam 300.

  FIG. 9 is a diagram for explaining the operation of the automatic display swing mechanism according to the embodiment of the present invention (cam position: uppermost part). The movement is advanced, and the friction pulley 410 is raised to the top of the oblong hole 302. FIG. 10 is a diagram (cam position: uppermost part) showing the movement of the cam in the automatic swing hinge mechanism according to the embodiment of the present invention, and the friction pulley 410 attached to the inverted heart-shaped cam 300 is an oblong hole. The movement of the cam at the position raised to the top of 302 is shown.

  As shown in FIG. 10, when the cam rotation shaft 301 of the inverted heart-shaped cam 300 rises to the top of the oblong hole 302 and the cam guide shaft 304 exceeds the top of the bulge of the inverted heart-shaped cam 300, Falls to the bottom of the cam by the force of a cam holding spring not shown, and the display unit 1 is inclined 90 degrees.

  When the cam rotation shaft 301 of the reverse heart type cam 300 falls to the lowermost part of the cam, the friction pulley 410 fastened by the reverse heart type cam 300 and the cam rotation shaft 301 in FIG. However, the friction pulley 410 and the drive belt 400 slip by the force of the cam holding spring of the reverse heart-shaped cam 300 and the weight of the display unit 1.

  Since the phase of the display unit 1 is detected by another means (magnet sensor or the like), the motor 430 is controlled to stop simultaneously with the end of the swing.

  Further, when a person swings the display unit 1 forcibly during the swing operation, it is absorbed by sliding between the drive belt 400 and the friction pulley 410. Further, when the electric swing mechanism is not used, there is no problem because the drive belt 400 is not originally in contact with the friction pulley 410.

  FIG. 11 is a detailed diagram (part 1: when the right pad is pressed) of the pressing pad moving mechanism according to the embodiment of the present invention. FIG. 12 is a detailed view (part 2: when the left pad is pressed) of the pressing pad moving mechanism according to the embodiment of the present invention. Since only the movement of the pressing pad differs between right and left, only the pressing pad moving mechanism when the right pad is pressed will be described in detail below with reference to FIG.

  FIG. 11 shows a case where the right pressing pad 401 is operated to cause the display unit 1 to swing left as viewed from the back of the display, and the worm wheel 420 is rotated counterclockwise. On the other hand, FIG. 12 shows a case where the left pressing pad 402 is operated to swing the display unit 1 to the right when viewed from the back of the display, and the worm wheel 420 rotates clockwise. In FIG. 11 and FIG. 12, the drive belt 400 and the motor 430 are omitted for easy explanation of the operation.

  The operation of the pressing pad moving mechanism will be described below.

  As shown in FIG. 11, the right and left pressing pads 401 and 402 are connected by a pressing pad frame 450, and have a structure capable of sliding in the horizontal direction with respect to the cam frame 303b. Further, the pressing pads 401 and 402 have a structure in which either of the left and right sides is exclusively pressed against the friction pulley 410 with the drive belt 400 sandwiched by the force of the swing spring 440.

  Further, a pressing pad moving pin 421 is driven into the back surface of the worm wheel 420 as shown by a dotted line. When the worm wheel 420 rotates, the pressing pad moving pin 421 is installed at a position where the pressing pad moving pin 421 is hooked by the protruding pressing pad moving spring 403 installed at the center of the connecting portion of the pressing pad 401. The left and right slide operations 401 and 402 are enabled.

  The end of the swing spring 440 is fixed by a fixing pin 441 attached to the pressing pad frame 450 and a fixing pin 442 attached to the cam frame 303b so that the spring can rotate. During rotation, when the pressing pad moving pin 421 on the back surface of the worm wheel 420 touches the pressing pad moving spring 403, the tension of the swing spring 440 is applied to the left as shown in FIG. Move to. In the right and left swings, the swing springs 440 operate in opposite phases.

  Further, when the drive belt 400 is not pressed against the friction pulley 410, a pressing pad center stop spring 405 that holds the swing spring 440 at a neutral point is provided, and the pressing pad center stop spring 405 is a pressing to which the pressing pad 401 is attached. The protrusion 404 that protrudes from the pad frame 402 is fitted. In addition, an inverted triangular concavo-convex structure is provided so that the fitting can be removed and moved relatively easily when an external force is applied. The fitting at this time is in a state where the pressing pad 401 holds a neutral point that does not contact the driving belt 400.

  Further, when the display unit 1 tilted 90 degrees is returned to the normal position, the worm wheel 420 may be rotated in the reverse direction, and the reverse side pressing pad 401 is pressed against the friction pulley 410 so that the display unit 1 is Return to normal position. Similarly, the return of the display unit 1 to the normal position is detected by a magnet sensor or the like, and the rotation of the motor 430 is stopped.

  Further, when the user holds or forcibly swings the display unit 1 during the automatic swing operation, no problem occurs because the user absorbs the slip between the drive belt 400 and the friction pulley 410.

The embodiments of the present invention described above are as shown in the following supplementary notes.
(Supplementary Note 1) An automatic swing mechanism of a display unit in a portable device,
A belt drive pulley that can rotate the drive belt in either the left or right direction;
A motor for driving the belt drive pulley;
A display support cam having a friction pulley fixed on a rotating wheel that can move up and down along the oval hole and rotate left and right;
A drive belt disposed on the outer periphery with a gap so as not to contact the friction pulley;
On both sides of the friction pulley, provided with a pressing pad arranged outside the drive belt so as not to contact the drive belt during non-swing operation,
When the drive belt is pressed against the friction pulley by any one of the pressing pads, the friction pulley rises while rotating along the oblong hole, and the display unit moves horizontally at its lower end. An automatic swing mechanism that swings in the rotational direction of the belt drive pulley. (1)
(Additional remark 2) The said press pad arrange | positioned at the both sides of the said friction pulley is fixed to the press pad frame which can move integrally, and consists of the structure which presses the said drive belt against the said friction pulley exclusively. The automatic swing mechanism according to appendix 1. (2)
(Supplementary Note 3) When a pin provided so as to operate integrally with the belt drive pulley that is a drive source of the drive belt comes into contact with a moving spring attached to a central portion of the pressing pad frame at the time of rotation. The automatic swing mechanism according to appendix 2, wherein the pressing pad moves to the left or right to press the drive belt against the friction pulley. (3)
(Supplementary note 4) The automatic swing mechanism according to any one of Supplementary notes 1 to 3, wherein the pressing pad has a lock mechanism that can be stopped at a neutral position that does not contact the drive belt. (4)
(Additional remark 5) The switch which can be operated with one hand is provided in the both sides | surfaces of the operation part in the said portable apparatus, The said display part swings automatically in the direction where the said switch was pressed down, The additional notes 1 thru | or 4 characterized by the above-mentioned The automatic swing mechanism according to any one of the above. (5)
(Supplementary note 6) The automatic swing mechanism according to any one of supplementary notes 1 to 4, further comprising a mode of automatically swinging in conjunction with an application activated in the portable device. (6)
(Supplementary note 7) The automatic swing mechanism according to supplementary note 6, including a control mechanism that allows a user to freely set a mode of automatic swing.
(Supplementary Note 8) The friction pulley, the drive belt, and the pressing pad are configured of a low friction member so that the display unit does not break even if the swing operation is forcibly stopped during the automatic swing operation. The automatic swing mechanism according to any one of appendices 1 to 7.
(Supplementary note 9) The automatic swing mechanism according to supplementary note 1, wherein the automatic swing mechanism automatically swings the map of the self-position and the traveling direction in an easy-to-see direction according to the positioning by the GPS mounted on the portable device or the traveling direction.
(Additional remark 10) It is a portable apparatus provided with the automatic swing mechanism of the display part,
The automatic swing mechanism is
A belt drive pulley that can rotate the drive belt in either the left or right direction;
A motor for driving the belt drive pulley;
A display support cam having a friction pulley fixed on a rotating wheel that can move up and down along the oval hole and rotate left and right;
A drive belt disposed on the outer periphery with a gap so as not to contact the friction pulley;
On both sides of the friction pulley, provided with a pressing pad arranged outside the drive belt so as not to contact the drive belt during non-swing operation,
When the drive belt is pressed against the friction pulley by any one of the pressing pads, the friction pulley rises while rotating along the oblong hole, and the display unit moves horizontally at its lower end. A portable device that swings in the rotational direction of the belt drive pulley. (7)

It is a figure which shows the basic structure of the foldable mobile telephone which becomes embodiment of this invention. It is a figure which shows the example of a horizontal swing of the display part by switch operation in the foldable mobile telephone which becomes embodiment of this invention. It is a figure which shows the example of a horizontal swing of the display part by application cooperation in the foldable mobile phone which becomes embodiment of this invention. It is a figure which shows the example of application to the mobile telephone with GPS of the display automatic swing mechanism which becomes embodiment of this invention. It is a figure (cam position: the lowest part) showing the motion of the cam in the automatic swing hinge mechanism which becomes embodiment of this invention. It is a figure (cam position: lowest part) explaining the operation | movement of the display automatic swing mechanism which becomes embodiment of this invention. It is a figure (cam position: middle position) explaining operation | movement of the display automatic swing mechanism which becomes embodiment of this invention. It is a figure (cam position: middle position) showing the motion of the cam in the automatic swing hinge mechanism which becomes embodiment of this invention. It is a figure (cam position: uppermost part) explaining operation | movement of the display automatic swing mechanism which becomes embodiment of this invention. It is a figure (cam position: uppermost part) showing the motion of the cam in the automatic swing hinge mechanism which becomes embodiment of this invention. It is detail drawing (the 1: at the time of right pad press) of the press pad moving mechanism which becomes embodiment of this invention. It is detail drawing (the 2nd: at the time of left pad press) of the press pad moving mechanism which becomes embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Display part 2 Operation part 3 Rotating hinge 10 Automatic swing mechanism part 100 Display surface 110 Self-position 120 Traveling direction 200 Key operation surface 210, 211 Switch 220 TV button 230 Camera button 300 Reverse heart type cam (display support cam)
301 Cam rotation shaft 302 Oval hole 303a, b Cam frame (a: cam surface, b: back surface)
304 Cam guide shaft 400 Drive belt 401, 402 Press pad 403 Press pad moving spring 404 Protrusion 405 Press pad center stop spring 410 Friction pulley 411, 412, 413, 414 Follow-up pulley 420 Warm wheel 421 Press pad moving pin 430 Motor 431 Drive control unit 440 Swing spring 441, 442 Fixing pin 450 Press pad frame

Claims (7)

An automatic swing mechanism of a display unit in a portable device,
A belt drive pulley that can rotate the drive belt in either the left or right direction;
A motor for driving the belt drive pulley;
A display support cam having a friction pulley fixed on a rotating wheel that can move up and down along the oval hole and rotate left and right;
A drive belt disposed on the outer periphery with a gap so as not to contact the friction pulley;
On both sides of the friction pulley, provided with a pressing pad arranged outside the drive belt so as not to contact the drive belt during non-swing operation,
When the drive belt is pressed against the friction pulley by any one of the pressing pads, the friction pulley rises while rotating along the oblong hole, and the display unit moves horizontally at its lower end. An automatic swing mechanism that swings in the rotational direction of the belt drive pulley.   The press pad disposed on both sides of the friction pulley is fixed to a press pad frame that can be moved integrally, and is configured to exclusively press the drive belt against the friction pulley. The automatic swing mechanism described.   A pin provided to operate integrally with the belt drive pulley that is a drive source of the drive belt comes into contact with a moving spring attached to a central portion of the press pad frame at the time of rotation. The automatic swing mechanism according to claim 2, wherein the drive belt moves to either the left or right and presses the drive belt against the friction pulley.   The automatic swing mechanism according to any one of claims 1 to 3, wherein the pressing pad has a lock mechanism that can be stopped at a neutral position that does not contact the driving belt.   5. The switch according to claim 1, further comprising a switch that can be operated with one hand on both sides of the operation unit of the portable device, wherein the display unit automatically swings in a direction in which the switch is pressed. The automatic swing mechanism described in 1.   The automatic swing mechanism according to any one of claims 1 to 4, further comprising a mode of automatically swinging in conjunction with an application activated in the portable device. A portable device having an automatic swing mechanism of the display unit,
The automatic swing mechanism is
A belt drive pulley that can rotate the drive belt in either the left or right direction;
A motor for driving the belt drive pulley;
A display support cam having a friction pulley fixed on a rotating wheel that can move up and down along the oval hole and rotate left and right;
A drive belt disposed on the outer periphery with a gap so as not to contact the friction pulley;
On both sides of the friction pulley, provided with a pressing pad arranged outside the drive belt so as not to contact the drive belt during non-swing operation,
When the drive belt is pressed against the friction pulley by any one of the pressing pads, the friction pulley rises while rotating along the oblong hole, and the display unit moves horizontally at its lower end. A portable device that swings in a rotation direction of the belt drive pulley.

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