JP2006033330A - Foldable personal digital assistant with biaxial hinge mechanism - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a foldable personal digital assistant wherein a maximum opening angle of two cases is decided to be a prescribed angle of less than 180 degrees. <P>SOLUTION: The foldable personal digital assistant is provided with: a first case 2; a spindle 10 obliquely projected to the first case 2; a revolving member 11 revolvably fitted to the spindle 10; an opening/closing shaft 12 provided to the revolving member 11 and projected in a perpendicular direction to a center line of the spindle 10; a second case 3 fitted to the opening/closing shaft 12 in a way of revolving around the center line of the opening/closing shaft 12; and a stopper member 11a for stopping the revolving of the second case 3 at a perpendicular position when the second case 3 is revolved around the opening/closing shaft 12 up to the perpendicular position with respect to the center line of the spindle 10. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a portable information terminal device such as a mobile phone or a simple mobile phone (personal handyphone system: PHS), and in particular, two main housings by a biaxial hinge mechanism having both a rotation mechanism and an opening / closing mechanism. The present invention relates to a foldable portable information terminal device with a two-axis hinge mechanism connected to each other.

  For example, in Patent Documents 1 and 2 below, a call control device or the like is mounted inside, a casing in which a push button switch or the like is disposed on the surface, and a screen of a display unit such as a liquid crystal is disposed on the surface. A structure of a mobile phone is described in which a case is connected to the case by a biaxial hinge mechanism, and the other case is rotatable and foldable with respect to one case.

  In such a foldable mobile phone with a biaxial hinge mechanism, one housing can be folded with respect to the other housing so that the screen of the display portion faces inward, and one housing can be folded with the other housing. By folding with respect to the housing, the two housings can be folded so that the screen of the display portion faces outward.

  A conventional folding mobile phone with a biaxial hinge mechanism is provided with a rotary shaft of a biaxial hinge mechanism perpendicular to the surface of one housing, and a second opening / closing shaft projecting perpendicularly to the rotary shaft. It has a structure to attach a housing. For this reason, when the other casing is opened with respect to one casing and the conversation with the other party is made, the other casing is opened 180 degrees with respect to the one casing.

JP 2003-244293 A Japanese Patent Laid-Open No. 2003-304316

  However, when the folding cellular phone is opened and used, the mouthpiece provided at the end of one housing is put on the mouth and the earpiece provided on the end of the other housing is put on the ear. Is easier to use when the housing is opened at an angle of less than 180 degrees, in other words, the housing is slightly bent in a “<” shape. Also, when the push button switch is operated while looking at the display screen, it is easier to see the screen if it is slightly bent in the shape of "<".

  In contrast, the conventional folding mobile phone with a biaxial hinge mechanism opens at an angle of 180 degrees when the other casing is opened with respect to one casing. There is a problem in that the transmission hole is too far away from the mouth, and when the transmission hole is applied to the mouth, the reception hole is too far away from the ear.

  In order to solve this problem, it is possible to provide a click mechanism that can temporarily lock the opening angle of one housing and the other housing at a predetermined angle of less than 180 degrees. Therefore, there arises a problem that the structure for the above becomes complicated and the manufacturing cost increases. In addition, since the click load cannot be increased, if the earpiece is strongly pressed against the ear so that the sound from the earpiece can be heard well, the click mechanism is disengaged and the two housings are opened at 180 degrees. is there.

  An object of the present invention is to provide a foldable portable information terminal device with a biaxial hinge mechanism that can keep the opening angle of two housings at a predetermined angle of less than 180 degrees.

  A foldable portable information terminal device with a biaxial hinge mechanism according to the present invention includes a first housing, a support shaft projecting obliquely from the first housing, and a pivotable attachment to the support shaft. A rotating member provided on the rotating member and projecting in a direction perpendicular to the center line of the support shaft, and attached to the opening / closing shaft and rotated around the center line of the opening / closing shaft. A second housing that is detachably mounted, and the second housing at the vertical position when the second housing is rotated about the opening / closing axis to a vertical position with respect to a center line of the support shaft. And a stopper member for stopping the rotation of the housing.

  With this configuration, the maximum opening angle of the two casings can be set to a predetermined angle of less than 180 degrees without changing the basic structure of the existing biaxial hinge mechanism, and the usability of the portable information terminal device is improved.

  In the foldable portable information terminal device with a biaxial hinge mechanism according to the present invention, the surface portion of the first housing to which the base portion of the support shaft is attached is formed as an inclined surface, and the support shaft is in relation to the inclined surface. It is characterized by being vertically projected.

  With this configuration, the maximum opening angle of the two casings can be increased by only slightly changing the structure of the end of the first casing out of the basic structure of the conventional folding portable information terminal device with a biaxial hinge mechanism. It becomes possible to make it into the predetermined angle of less than a degree.

  In the portable information terminal device with a biaxial hinge mechanism of the present invention, a flange portion provided at a base portion of the support shaft is provided to be inclined with respect to a center line of the support shaft, and the flange portion is provided in the first casing. It is embedded in the first casing so as to be parallel to the surface.

  With this configuration, the maximum opening angle of the two housings is less than 180 degrees by only slightly changing the structure of the base portion of the support shaft of the conventional folding portable information terminal device with a biaxial hinge mechanism. A predetermined angle can be set.

  According to the foldable portable information terminal device with a biaxial hinge mechanism of the present invention, the maximum opening angle is less than 180 degrees simply by attaching the support shaft of the conventional biaxial hinge mechanism obliquely to the first housing. Therefore, when the earpiece is placed on the ear, the mouthpiece will not be too far away from the mouth, and even if the earpiece is pressed firmly against the ear, the maximum opening angle remains unchanged. Therefore, usability is improved.

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

  FIG. 1 is a schematic side view of a main part fracture of the folding mobile phone with a biaxial hinge mechanism according to the first embodiment of the present invention in an open state. The foldable mobile phone 1 includes a first main body housing 2 and a second main body housing 3, and the first main body housing 2 and the second main body housing 3 are biaxial. They are connected by a hinge mechanism 4.

  In the present embodiment, the first main body housing 2 incorporates a call control device (not shown), a push button switch 5 for dial or the like is provided on the surface, and a transmission hole 6 is provided at the end. Provided.

  In the present embodiment, the second main body housing 3 is provided so that the screen of the liquid crystal display unit 7 is exposed on the surface, and a receiving hole 8 is provided at the end.

An end of the first main body housing 2 opposite to the end provided with the transmitting hole 6, and an end of the second main body housing 3 opposite to the end provided with the receiving hole 8; Are connected by a biaxial hinge mechanism 4. The biaxial hinge mechanism 4 includes a support shaft 10 having a root portion embedded and fixed to the first main body housing 2.

  In the present embodiment, the support shaft 10 is inclined with respect to the surface of the first main body housing 2 so as to be inclined toward the push button 5, and in the illustrated example, the first main body housing has an inclination angle of 70 degrees. Projected to the body 2.

  The biaxial hinge mechanism 4 is further provided at the distal end portion of the support shaft 10, and is provided with a rotation member 11 that is rotatable about the support shaft 10 in the direction of the double-headed arrow A, and both sides of the rotation member 11. And an opening / closing shaft 12 projecting from the portion, and the second body housing 3 is rotatably attached to the opening / closing shaft 12. The opening / closing shaft 12 and the second main body housing 3 may be fixedly provided so that the opening / closing shaft 12 can be rotated with respect to the rotating member 11.

  A flange-shaped flange portion 11 a that protrudes in a direction perpendicular to the central axis of the rotation member 11 is provided on the bottom of the rotation member 11 (on the first main body housing 2 side). When the second main body housing 3 is opened with respect to the first main body housing 2 around the opening / closing shaft 12, the second main body housing 3 abuts on the collar portion 11a. It functions as a stopper that prevents further opening operation.

  As shown in FIG. 1, the folding mobile phone 1 with the biaxial hinge mechanism according to the present embodiment having such a structure opens the second main body housing 3 with respect to the first main body housing 2. When the second main body housing 3 is opened in a direction away from the first main body housing 2 with the opening / closing shaft 12 as a center, and the second main body housing 3 abuts against the flange 11 a of the rotating member 11. The maximum opening angle. In the example shown in FIG. 1, the maximum opening angle is about 160 degrees because the support shaft 10 is provided with an inclination angle of 70 degrees, which is an easy-to-use angle.

  When folding the foldable mobile phone 1, the second main body housing 3 is rotated from the state of FIG. 1 in the direction approaching the first main body housing 2 around the opening / closing shaft 12. When the front end of the second main body casing 3 comes into contact with the front end of the first main body casing 2, the push button switch of the first main body casing 2 is completely folded as shown in FIG. 5 and the screen of the liquid crystal display unit 7 of the second main body housing 3 face each other. That is, the mobile phone 1 is closed with the liquid crystal display surface facing inward.

  When the cellular phone 1 is to be folded with the screen of the liquid crystal display unit 7 facing outward, the second main body housing 3 is centered on the opening / closing shaft 12 from the state shown in FIG. This time, the second main body housing 3 is rotated 180 degrees around the support shaft 10, and the second main body housing 3 is brought closer to the first main body housing 2 around the opening / closing shaft 12. Rotate in the direction. Then, when the front end of the second main body casing 3 comes into contact with the front end of the first main body casing 2, it is completely folded, but this time, as shown in FIG. 3, the screen of the liquid crystal display section 7 Can be viewed even when the mobile phone 1 is completely closed.

  FIG. 4 is a schematic side view of a principal part fracture of the folding mobile phone with a biaxial hinge mechanism according to the second embodiment of the present invention in an open state, and FIG. It is a principal part fracture | rupture schematic side view of the state closed completely. The same members as those in FIGS. 1, 2, and 3 are denoted by the same reference numerals, and the description thereof is omitted.

  In the present embodiment, the surface of the end 2a on the biaxial hinge mechanism attachment side of the first main body housing 2 is formed obliquely, and the support shaft 10 is attached perpendicularly to the inclined surface, whereby the support shaft 10 Is attached to the first main body housing 2 at an angle.

  The biaxial hinge mechanism 4 adopts the same structure as that of the conventional biaxial hinge mechanism, thereby reducing the manufacturing cost. In the embodiment shown in FIG. 1, the structure in which the support shaft 10 is vertically attached to the surface of the first main body housing 2 is the structure of the conventional mobile phone. When the hinge mechanism is applied to the embodiment of the present invention as it is, when the support shaft 10 is disposed obliquely with respect to the first main body housing 2, the root end portion of the support shaft 10 becomes the first main body housing 2. It will come out from the surface of this, and the attachment intensity | strength of the spindle 10 will become weak.

  Therefore, in the second embodiment, as shown in FIGS. 4 and 5, the surface of the end 2a of the first main body housing 2 is formed obliquely, and the same biaxial hinge mechanism 4 as the conventional one is employed. Also, the mounting strength of the support shaft 10 can be secured.

  FIG. 6 is a schematic cutaway side view of a principal part of the folding mobile phone with a biaxial hinge mechanism according to the third embodiment of the present invention in an open state. FIG. It is a principal part fracture | rupture schematic side view of the state closed in the inside. The same members as those in FIGS. 1, 2, and 3 are denoted by the same reference numerals, and the description thereof is omitted.

  In the second embodiment shown in FIGS. 4 and 5, the same biaxial hinge mechanism as that of the conventional structure is adopted and the structure of the first main body housing 2 is deformed. The structure of the main body housing 2 is not changed, and the structure of the base portion of the support shaft 10 of the biaxial hinge mechanism is deformed.

  That is, in this embodiment, the flange portion 10a provided at the base portion of the support shaft 10 is not provided perpendicular to the central axis of the support shaft 10 as shown in FIGS. As shown in FIG. 5, the flange portion 10a is provided horizontally with respect to the first main body housing 2, and is provided with an angle. Accordingly, the support shaft 10 can be attached to the first main body housing 2 at an angle without changing the structure of the first main body housing 2 from the conventional structure.

  The foldable portable information terminal device with a biaxial hinge mechanism according to the present invention has the effect that the opening angle can be fixed to a predetermined angle of less than 180 degrees with the two main bodies fully opened. It is useful as a telephone.

The principal part fracture | rupture schematic side view of the open state of the folding-type mobile telephone with a biaxial hinge mechanism which concerns on the 1st Embodiment of this invention The principal part fracture | rupture schematic side view which shows the state which closed the display surface inside by the foldable mobile telephone with a biaxial hinge mechanism which concerns on the 1st Embodiment of this invention. The principal part fracture | rupture schematic side view which shows the state which closed the display surface outside in the foldable mobile telephone with a biaxial hinge mechanism which concerns on the 1st Embodiment of this invention. The principal part fracture | rupture schematic side view of the open state of the folding-type mobile telephone with a biaxial hinge mechanism concerning the 2nd Embodiment of this invention The principal part fracture | rupture schematic side view which shows the state which closed the display surface inside with the foldable mobile telephone with a biaxial hinge mechanism which concerns on the 2nd Embodiment of this invention. The principal part fracture | rupture schematic side view of the open state of the folding-type mobile telephone with a biaxial hinge mechanism concerning the 3rd Embodiment of this invention The principal part fracture | rupture schematic side view which shows the state which closed the display surface inside with the foldable mobile telephone with a biaxial hinge mechanism which concerns on the 3rd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Folding-type mobile phone with 2 axis | shaft hinge mechanism 2 1st main body housing | casing 3 2nd main body housing | casing 4 2 axis | shaft hinge mechanism 5 Push button switch 6 Transmission hole 7 Liquid crystal display part 8 Earpiece hole 10 Support shaft 10a Flange Part 11 rotating member 11a collar part (stopper member)
12 Opening and closing shaft

Claims (3)

  A first housing; a pivot projecting obliquely on the first housing; a pivoting member rotatably attached to the pivot; and the pivot provided on the pivoting member An opening / closing shaft projecting in a direction perpendicular to the center line, a second housing attached to the opening / closing shaft and rotatably attached to the center line of the opening / closing shaft, and the second housing And a stopper member that stops the rotation of the second casing at the vertical position when the body is rotated to the vertical position with respect to the center line of the support shaft about the opening / closing axis. A foldable portable information terminal device with a biaxial hinge mechanism.   The surface portion of the first casing to which the base portion of the support shaft is attached is formed as an inclined surface, and the support shaft protrudes perpendicularly to the inclined surface. A foldable portable information terminal device with a biaxial hinge mechanism.   A flange portion provided at a base portion of the support shaft is provided to be inclined with respect to a center line of the support shaft, and the first flange portion is parallel to the surface of the first housing. The foldable portable information terminal device with a biaxial hinge mechanism according to claim 1, wherein the foldable portable information terminal device is embedded in a housing.

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