JP2009111675A - Portable electronic devices - Google Patents

Abstract

An object of the present invention is to provide a portable electronic device in which a casing can be thinned when a first casing and a lower casing are connected via a hinge portion.
A mobile phone includes a first housing 3 having a substantially flat plate shape, and a lower housing 2 connected to the first housing 3 via a hinge portion. The hinge portion 20 has a fixed portion 21 fixed in the first housing 3, and the first housing 3 has a bent portion 34 whose end is bent in the thickness direction of the first housing 3. A member 33 is provided. A screw hole 34 a is provided in the bent portion of the sheet metal member, and is fastened together with a screw 28 inserted through the fixing portion 21 in a direction orthogonal to the thickness direction of the first housing 3.
[Selection] Figure 8

Description

  The present invention relates to a portable electronic device such as a cellular phone.

2. Description of the Related Art Conventionally, in a mobile phone as a portable electronic device, a two-axis hinge mechanism is used as a hinge portion in order to connect a plurality of casings including a second casing and a first casing so that the casing can be opened and closed and rotated. The two-axis hinge mechanism includes a first axis hinge for opening and closing and a second axis hinge for rotation. The second casing is fixed to the first axis hinge, and the first casing is fixed to the second axis hinge. Fixed. As such a conventional structure, the following patent documents are disclosed.
Patent Documents 1 to 3 describe a screwing mechanism in a direction orthogonal to the rotation axis of the second shaft hinge, and Patent Document 4 describes a screwing mechanism in a direction parallel to the rotation axis of the second axis. Is described.
JP 2004-218688 A JP 2005-311004 A JP 2006-10025 A JP 2003-174495 A

  However, in any of the patent documents, one of the two-axis hinge mechanisms (second-axis hinges) of the two-axis hinge mechanism that connects the two cases is the set thickness direction of the second case and the first case (the case Therefore, the set thickness direction of the housing is increased, which hinders the thickness reduction of the electronic device. Further, although the biaxial hinge mechanism is modularized and formed by die casting of magnesium or the like, the module configuration by die casting has a limit in reducing the thickness in order to ensure strength. For this reason, there is a problem that restrictions are imposed on thinning and miniaturization of electronic devices.

  The present invention has a structure in which a first housing and a second housing are connected via a hinge portion, and the two housings are thinned and miniaturized in the set thickness direction in a closed state while ensuring sufficient strength. An object of the present invention is to provide a portable electronic device that enables the above.

  The present invention includes a substantially flat plate-shaped first housing and a second housing connected to the first housing via a hinge portion, and the hinge portion is fixed in the first housing. The first casing includes a sheet metal member having a bent portion whose end is bent in the thickness direction of the first casing, and the bent portion of the sheet metal member is provided with a screw hole. In addition, the present invention relates to a portable electronic device that is fastened to the fixing portion with a screw that is inserted in a direction orthogonal to the thickness direction of the first housing.

  In addition, the hinge portion includes a first rotation shaft that allows the first housing to transition between an open state and a closed state with respect to the second housing, and an axis orthogonal to the first rotation shaft. A second rotation shaft that allows one housing to rotate with respect to the second housing, and the hinge portion is fixed to the second housing so as to be rotatable with respect to the first rotation shaft. In addition, it is preferable that the fixing portion is rotatable with respect to the hinge portion on the second rotation shaft.

  The first casing includes a casing piece formed by resin insert molding the sheet metal member, and a bent portion of the sheet metal member is fixed via a resin layer formed by the resin insert molding. It is preferable that the parts are fastened together with screws.

  The sheet metal member is preferably a member that holds a back side of a display provided in the first housing.

  In addition, it is preferable that the sheet metal member has a standing claw portion cut out and bent in the rear side direction of the display, and the sub display is positioned by the standing claw portion.

  According to the present invention, the first housing and the second housing are connected by the hinge portion, and the two housings are thinned and miniaturized in the set thickness direction in a closed state while ensuring sufficient strength. It is possible to provide a portable electronic device that makes it possible.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Hereinafter, a mobile phone will be described as a portable electronic device. However, the present invention is not limited to this, and may be a PHS (Personal Handy Phone System), a PDA (Personal Digital Assistant), a portable navigation device, a laptop computer, or the like. There may be.

  The basic structure of the cellular phone 1 as a portable electronic device will be described with reference to FIGS. FIG. 1 is a perspective view in a state where a mobile phone 1 as a mobile electronic device is opened (first open state). FIG. 2 is a perspective view showing a state in which the display unit side body 3 of the mobile phone 1 is rotated by a predetermined angle around the rotation axis Y of the connecting unit 4. FIG. 3 is a perspective view showing a state in which the display unit side body 3 is rotated in the first open state of FIG. FIG. 4 is a perspective view of the state in which the mobile phone 1 is closed with the display unit side body 3 superimposed on the operation side body 2, and FIG. 5 is a front view in the closed state.

  The cellular phone 1 includes an operation unit side housing 2 as a second housing and a display unit side housing 3 as a first housing. The operation unit side body 2 and the display unit side body 3 are coupled via a coupling unit 4 having a biaxial hinge mechanism, and the mobile phone 1 can be deformed into an open state and a closed state, and the open state In each of the closed states, the display unit side body 3 can be switched between the front state and the back state.

  Here, the closed state is a state in which both housings are arranged so as to overlap each other, and the open state is a state in which both housings are arranged so as not to overlap each other. In the open state, the display 30 disposed on the surface 3A of the display unit side body 3 described later and the operation key group 11 disposed on the surface 2A of the operation unit side body 2 are on the same side. The display 30 in the display unit side body 3 and the operation key group 11 in the operation unit side body 2 are opposite to the back state in the open state (see FIG. 1). The state (refer FIG. 3) arrange | positioned so that it may face. The front state in the closed state is a state in which the display 30 in the display unit side body 3 is arranged so as to face the operation key group 11 in the operation unit side body 2 (see FIGS. 4 and 5). The back state in the closed state is a state where the display 30 in the display unit side body 3 is exposed without facing the operation key group 11 in the operation unit side body 2.

  The outer surface of the operation unit side body 2 as the second case is composed of a front case 2a and a rear case 2b. The operation unit side body 2 is configured such that an operation key group 11 and a voice input unit 12 to which a voice uttered by a user of the mobile phone 1 is input are exposed on the front case 2a side. . Here, the operation key group 11 includes a function setting operation key 13 for operating various functions such as various settings, a telephone book function, and a mail function, and a numeric keypad for inputting numbers such as telephone numbers and characters such as mail. Input operation keys 14 and the like, and a determination operation key 15 for performing determinations in various operations, scrolling in the vertical and horizontal directions, and the like. The voice input unit 12 is disposed on the outer end side opposite to the connection unit 4 side in the longitudinal direction of the operation unit side body 2. That is, the voice input unit 12 is arranged on one outer end side when the mobile phone 1 is in the open state.

  Each key constituting the operation key group 11 is predetermined according to a deformed state such as an open / close state and a front / back state of the operation unit side body 2 and the display unit side body 3 and the type of application being activated. Function is assigned (key assignment). In the mobile phone 1, when each key constituting the operation key group 11 is pressed by the user, an operation corresponding to the function assigned to each key is executed.

  The display unit side housing 3 as the first housing has an outer surface composed of a front case 3a and a rear case 3b, and has a substantially flat plate shape as a whole. In the front case 3a of the display unit side body 3, a display (first display) 30 having a predetermined shape for displaying various types of information and a sound output unit 31 for outputting sound on the other side of the call are exposed. Are arranged as follows. The audio output unit 31 is disposed on the outer end side opposite to the connection unit 4 in the longitudinal direction of the display unit side body 3. That is, the audio output unit 31 is arranged on the other end side when the mobile phone 1 is in the open state.

  In the rear case 3b of the display unit side body 3, a sub display (second display) 32 for displaying various information is exposed and arranged. Each of the display 30 and the sub-display 32 includes a liquid crystal panel, a drive circuit that drives the liquid crystal panel, and a light source unit such as a backlight that emits light from the back side of the liquid crystal panel. These may be organic EL displays.

  The connection unit 4 connects the operation unit side body 2 and the display unit side body 3 so that the operation unit side body 2 and the display unit side body 3 can be opened and closed at an arbitrary angle around an opening / closing axis X as a first rotation axis. A biaxial hinge mechanism 20 is provided as a coupling mechanism that is pivotably coupled at an arbitrary angle around the rotational axis Y. The biaxial hinge mechanism 20 is provided inside the hinge case 6. The hinge case 6 is disposed on the lower end side of the display unit side body 3, and a notch 5 for inserting the hinge case 6 is formed on the upper end part of the operation unit side body 2. . Both sides of the notch portion 5 are shoulder portions 7, and the hinge case 6 is inserted so as to be sandwiched between the shoulder portions 7.

  As described above, in the mobile phone 1, the operation unit side body 2 and the display unit side body 3 are connected to each other by the biaxial hinge mechanism 20 of the connection unit 4 so as to be opened and closed and rotated. As a result, the mobile phone 1 is opened or closed by opening and closing the operation unit side body 2 and the display unit side body 3 about the opening / closing axis X, or rotating about the rotation axis Y. It can be transformed into various states.

  For example, the cellular phone 1 in a closed state (first closed state) in which the operation unit side body 2 and the display unit side body 3 overlap each other is connected to the operation unit side body 2 and the display unit side body 3 respectively. The opening on the side opposite to the opening / closing axis X is deformed so as to open around the opening / closing axis X so as to be separated from each other, so that the operation unit side body 2 and the display unit side body 3 do not overlap each other. It can be in the state (first open state).

  On the contrary, the mobile phone 1 in the open state (first open state) is opened with the opening / closing axis X so that the ends opposite to the opening / closing axis X of the operation unit side body 2 and the display unit side body 3 approach each other. By changing the shape so as to be closed at the center, the closed state (first closed state) can be obtained.

  In the open state (first open state), as shown in FIG. 2, the display unit side body 3 can be rotated around the rotation axis Y. Furthermore, by rotating the display unit side body 3 around the rotation axis Y, the front and back states of the display unit side body 3 can be switched. Specifically, the display 30 disposed on the surface 3A of the display unit side body 3 and the operation key group 11 disposed on the surface 2A of the operation unit side body 2 are in an open state (first In the open state, the display unit side body 3 is rotated 180 degrees around the rotation axis Y and is disposed on the surface 3A of the display unit side body 3 and the surface 2A of the operation unit side body 2 The operation key group arranged in the open state (second open state) facing the opposite side.

  Then, by deforming the display unit side body 3 in the second open state so as to be closed about the opening / closing axis X, the mobile phone 1 can be closed (second closed state). In other words, the mobile phone 1 changes from the closed state (first closed state) in which the display 30 in the display unit side body 3 is arranged to face the operation key group 11 in the operation unit side body 2 to the display unit side housing. The display 30 in the body 3 can be transformed into a closed state (second closed state, turn-closed state) in which the display 30 is exposed without facing the operation unit side body 2.

  In the present embodiment, the foldable mobile phone 1 by the connecting portion 4 is described. However, it is not a foldable type, and the operation unit side body 2 and the display unit side body 3 are overlapped. One of the casings is slid in one direction, or one of the casings is rotated about an axis along the direction in which the operation unit side casing 2 and the display unit side casing 3 overlap. It may be a rotation (revolver).

  The structure of the biaxial hinge mechanism 20 will be described with reference to FIGS. 6 is an exploded perspective view of the biaxial hinge mechanism 20, FIG. 7 is a perspective view showing a fixing structure of the biaxial hinge mechanism 20, FIG. 8 is a partially enlarged perspective view of FIG. 7, and FIG. FIG. 10 is a perspective view showing a support structure of the opening / closing axis X of the biaxial hinge mechanism 20.

  As shown in FIG. 6, the biaxial hinge mechanism 20 includes a connecting arm 21 as a fixed portion, a connecting bracket 22 that is bent in an L shape and attached to the connecting arm 21, and a plurality of screws 25 to the connecting bracket 22. And a connecting cylinder 23 to be fixed. The connecting arm 21 and the connecting bracket 22 are connected by a short rotating shaft 24, and the connecting arm 21 is rotatable with respect to the connecting bracket 22 via the rotating shaft 24. The rotation shaft 24 is rotatable with respect to the connection bracket 22 and extends in the direction of the rotation axis Y as the second rotation axis. Thus, the rotation shaft 24 is a component part of the rotation axis Y. In such a structure, when the rotation shaft 24 rotates with respect to the connection bracket 22, the connection arm 21 can rotate about the rotation axis Y (the rotation shaft 24). Thereby, relative rotation between the display unit side body 3 and the operation unit side body 2 in the open state is possible.

  The connecting cylinder 23 extends in a direction orthogonal to the axial direction of the rotating shaft 24. Accordingly, the connecting cylinder 23 extends in the axial direction of the opening / closing axis X as the first rotation axis. The connecting cylinder 23 has a fixed piece 23a and a cylindrical piece 23b integrally formed at both ends of the fixed piece 23a. A connecting bracket 22 is screwed to the fixed piece 23a, and the connecting bracket 22 is supported by this screwing. The connecting cylinder 23 is such that the cylinder piece 23b is connected to the operation unit side body 2, and this connecting structure is shown in FIG.

  As shown in FIG. 10, left and right shoulder portions 7 are formed at the upper end portion of the front case 2 a of the operation unit side body 2, and support holes 16 are formed on the opposing surfaces of the left and right shoulder portions 7. ing. Reference numeral 17 denotes an axis module. The shaft module 17 has an outer surface such as a non-circular shape in which a circle is cut in parallel, and a root portion is inserted into one cylinder piece 23b of the connecting cylinder 23 as shown in FIG. The connecting cylinder 23 can be relatively rotated around the shaft module 17. The tip portion of the shaft module 17 is inserted into the front case 2a of the operation unit side body 2 and is fixed to the front case 2a. As a result, the operation unit side body 2 rotates with the one cylindrical piece 23b on the shaft module 17 side as a hinge shaft. That is, the operation unit side body 2 rotates around the connecting cylinder 23, and the cases 2 and 3 are opened and closed by this rotation. The other cylinder piece 23b of the connecting cylinder 23 into which the shaft module 17 is not inserted is inserted into the other shoulder portion 7 of the front case 2a to support the front case 2a.

  The above connecting bracket 22 and connecting cylinder 23 are set inside the hinge case 6. As shown in FIG. 6, the hinge case 6 is composed of a halved hinge front case 6a and a hinge rear case 6b, and a connecting bracket 22 and a connecting cylinder 23 assembled by screws 25 are inserted between them. The assembly of the connection bracket 22 and the connection cylinder 23 is accommodated by closing the cases 6a and 6b. In the set state in the hinge case 6, the tip portion of the shaft module 17 and the other cylindrical piece 23b protrude outward from the both end surface portions of the hinge case 6 along the axial direction (opening / closing axis X direction). The projecting portion is connected to the operation unit side body 2.

  The connecting arm 21 of the biaxial hinge mechanism 20 functions as a fixed portion, and is formed in a U shape as shown in FIGS. The connecting arm 21 includes a support arm portion 21a extending in a direction orthogonal to the rotation axis Y that is the second rotation shaft, and a holding arm portion 21b bent substantially at right angles from both ends of the support arm portion 21a. Yes. The support arm portion 21 a has a central portion in the length direction fixed to the rotating shaft 24, and the entire connecting arm 21 rotates integrally with the rotating shaft 24 when the rotating shaft 24 rotates. This rotation is configured to rotate in the axial direction of the rotation axis Y because the support arm portion 21a extends in a direction orthogonal to the rotation axis Y.

  As shown in FIGS. 6 to 8, the support arm portion 21 a of the connecting arm 21 is formed with a screw hole 27 at a point-symmetrical position about the rotation shaft 24. In this embodiment, two screw holes 27 are formed at two symmetrical positions around the rotation shaft 24. As shown in FIGS. 7 and 8, the fastening screw 28 is screwed into each screw hole 27, whereby the biaxial hinge mechanism 20 and the display unit side body 3 are connected. In such connection with the screw holes 27 at the point-symmetrical positions, the fixing force of the display unit side body 3 can be made equal on the left and right.

  The above connecting arm 21 is formed by bending one sheet metal. That is, by using a single sheet metal having a predetermined length with the axial direction of the rotation axis Y being the thickness direction, and bending and pressing the sheet metal, the support arm portion 21a and both end portions from the support arm portion 21a A holding arm portion 21b extending along the rotation axis Y is formed. In such a process, since the connecting arm 21 can be formed by a single bending process, a predetermined strength can be ensured even when the connecting arm 21 is thin.

  As shown in FIGS. 6 to 9, the display unit side body 3 has a support frame 33 (front case 3 a) as one of the housing pieces constituting the housing. A display 30 as a component of the display unit side body 3 is fitted and fixed to one surface (upper surface) of the support frame 33. A sub-display 32 is attached to the other surface (lower surface). The support frame 33 is entirely formed of a sheet metal member, and functions as a shield case that secures rigidity against bending and twisting operations in the display unit side body 3 and performs an anti-static shield. Thus, by forming the support frame 33 from a sheet metal member, a predetermined strength can be maintained even if the display unit side body 3 is thinned.

  The front case 3a of the display unit side body 3 is formed by resin insert molding a sheet metal member. In the resin insert molding, almost the entire sheet metal member is covered with a resin, so that the design of the outer surface of the housing can be enriched and a large rust prevention can be achieved. The support frame 33 has a vertically long frame surface 33b to which the rear surface side display 30 of the frame surface 33b is attached. In this case, claw portions 33a are formed at a plurality of locations on both ends in the longitudinal direction of the frame surface 33b. After the circuit board and the sub-display are placed in the area surrounded by the claw portions 33a, the rear case The display unit side body 3 is configured by engaging the 3b.

  In the plane of the frame surface 33 b of the support frame 33, standing claw portions 40 are formed at a plurality of locations. The standing claw portion 40 is formed by cutting out and bending a predetermined portion of the frame surface 33b. The standing claw portion 40 is cut out and bent corresponding to the sub-display 32, and rises from the frame surface 33b toward the back surface of the display 30, that is, toward the upper surface side with the frame surface 33b. . The sub display 32 is positioned by engaging the standing claw portion 40. More specifically, the back surface and the square of the sub display 32 are covered with a holder made of a soft material such as rubber, and the standing claw portion 40 is inserted into and locked by a slit 321 formed on the periphery. Therefore, the sub display 32 can be accurately fixed to the design position on the lower surface of the support frame 33.

  FIG. 11 is an exploded perspective view of components provided inside the display unit side body 3. The display unit side body 3 includes a front case 3a (see FIGS. 1 to 3), a cover panel 38, a display 30, a support frame 33, a circuit board 37, a sub display 32, and a rear case 3b. I have. The cover panel 38, the display 30, the support frame 33 (front case 3a), the circuit board 37, and the sub display 32 are housed between the front case 3a and the rear case 3b in this order from the front case 3a side.

  The display 30 and the sub display 32 are formed by a main body that displays information and a holder that fixes the main body. The display 30 is disposed on the upper surface side of the support frame 33, while the circuit board 37 and the sub display 32 are disposed on the lower surface side of the support frame 33. The cover panel 38 covers the display 30 and protects it.

  Various electronic components (not shown) are arranged on the mounting surface of the circuit board 37. Various electronic components constitute a circuit block such as a display control block that performs display control of the display mode and timing of the display 30 and the sub-display 32 by a predetermined combination. The circuit board 37 and the rear case 3b are opened with windows 37a and 3c facing the sub display 32, respectively. The sub display 32 is fixed to the support frame 33 by being engaged with the standing claw portion 40 of the support frame 33 with the circuit board 37 in contact with the lower surface of the support frame 33.

The biaxial hinge mechanism 20 is connected to one end of the support frame 33 on the short side (the lower end in FIGS. 6 to 8).
A connecting wall portion 34 as a bent portion is formed at one end of the support frame 33 on the short side. The connecting wall portion 34 is a predetermined portion of the sheet metal member molded by resin insert molding, and is formed by forming a resin mold layer on a part of the bent sheet metal member, and is integrally formed from the frame surface 33 b of the support frame 33. It is formed to stand up. The connecting wall portions 34 are provided at symmetrical positions with respect to the axial center line (rotating axis Y) of the support frame 33, and each connecting wall portion 34 is a rotating shaft that is a second rotating shaft. It extends in the direction perpendicular to Y. Each connecting wall portion 34 is formed with two screw holes 34a into which the fastening screws 28 are screwed. The screw hole 34a penetrates in the thickness direction of the connecting wall portion 34, and the penetrating end thereof corresponds to a holder (not shown) for fixing the display 30. The holder is formed with a screw hole into which the fastening screw 28 is screwed, and the fastening screw 28 is screwed into the support arm portion 21a of the biaxial hinge mechanism 20 and the connecting wall portion 34 of the support frame 33 to thereby fix the fastening screw 28. Screw into the screw hole of the holder. Thereby, the display 30 can be fixed to the support frame 33.

  Two screw holes 34a in each of the connecting wall portions 34 are formed at two point-symmetrical positions around the rotation axis Y. Further, the screw holes 34a in the respective connecting wall portions 34 are formed so as to be separated from the rotation axis Y, and the fastening screws 28 are screwed into the screw holes 34a. In this way, in the structure in which the screw holes 34a of the respective connecting wall portions 34 are formed at two positions at some distance from the rotation axis Y, the durability against the shearing force of the fastening screw 28 is increased. That is, when the display unit side body 3 rotates about the rotation axis Y, as shown in FIG. 9, a shearing force E along the diameter direction of the rotation circle D acts on the fastening screw 28. However, the durability against the shearing force E is increased by the presence of a plurality of fastening screws 28 from the rotation axis Y.

  A fitting groove 35 is formed on the inner side of the support frame 33 by press working of a sheet metal member (see FIG. 6). The fitting groove 35 is provided along the length direction of the connecting wall portion 34, and the support arm portion 21 a of the connecting arm 21 in the biaxial hinge mechanism 20 is fitted therein. In this embodiment, the both ends of the fitting groove 35 communicate with the sub fitting grooves 36 along the longitudinal direction of the support frame 33. The sub fitting groove 36 extends from the end portion of the fitting groove 35 in a direction orthogonal to the fitting groove 35. The holding arm portion 21 b of the connecting arm 21 in the biaxial hinge mechanism 20 is fitted into the sub fitting groove 36.

Next, the assembly procedure of this embodiment will be described. First, the disassembled biaxial hinge mechanism 20 shown in FIG. 6 is assembled. Then, the biaxial hinge mechanism 20 is fixed to the support frame 33 of the display unit side body 3. This fixing is performed by fitting the support arm portion 21 a of the connecting arm 21 into the fitting groove 35 of the support frame 33 and fitting the holding arm portion 21 b into the sub fitting groove 36 of the support frame 33. Thereafter, as shown in FIGS. 7 and 8, the fastening screw 28 is screwed from the connecting wall 34 side. The fastening screw 28 passes through the screw hole 27 of the support arm portion 21 a from the screw hole 34 a of the connecting wall portion 34 and is screwed together. In such screwing of the fastening screw 28, the display 30 and the biaxial hinge mechanism 20 are fastened together by screwing in a direction orthogonal to the thickness direction of the display unit side body 3. In this case, a side surface of the holder of the display 30 may be fixed by screwing a screw (not shown) to the holding arm portion 21b fitted in the sub fitting groove 36. The coupling force with the support frame 33 can be increased.
On the other hand, as shown in FIG. 11, after the circuit board 37 is brought into contact with the surface of the support frame 33 opposite to the mounting surface of the display 30 (the lower surface of the support frame 33), the sub display 32 is placed on the standing claw portion 40. To attach the sub-display 32 to the support frame 33.

  According to this embodiment, the thickness of the display unit side body 3 includes the display 30 that is a component of the display unit side body 3 and the support arm portion 21 a of the connecting arm 21 that is a flat plate part of the biaxial hinge mechanism 20. They can be fastened together by fastening the fastening screw 28 in a direction perpendicular to the direction. As described above, the structure in which the fastening screw 28 is fastened in the direction orthogonal to the thickness direction of the display unit side body 3 allows the display unit side body 3 to be thinned and miniaturized in the thickness direction. Can provide.

  Further, since the connecting arm 21 of the biaxial hinge mechanism 20 is formed of a sheet metal member, the strength can be ensured even if it is thin. Thereby, the thickness can be further reduced.

The support frame 33 is formed by resin insert molding a sheet metal member, and the connecting wall portion 34 of the support frame 33 into which the fastening screw 28 is screwed is formed by insert molding with the support arm portion 21a of the connecting arm 21. Since it is clamped via the resin mold layer, a soft material is sandwiched between the metal layers, so that it is strong against vibration and the fastening screw 28 is not loosened. For this reason, the support frame 33 (display unit side body 3) and the connection arm 21 (biaxial hinge mechanism 20) can be firmly connected.
In addition, although the display unit side body, the operation unit side body, and the operation unit side body have been described as examples, the present invention is not limited thereto, and the present invention is applicable as long as it has upper and lower housings. Needless to say.

It is a perspective view in the state where a cellular phone as a portable electronic terminal was opened. It is a perspective view which shows the middle state which is rotating the display part side housing | casing. It is a perspective view of the state where the display part side case was rotated. It is a perspective view which shows the state which closed the mobile telephone. It is a front view which shows the state which closed the mobile telephone. It is a disassembled perspective view which shows the attachment structure of a biaxial hinge mechanism. It is a perspective view which shows attachment of the biaxial hinge mechanism to a display part side housing | casing. FIG. 8 is a partially enlarged perspective view of FIG. 7. It is a perspective view which shows the state which attached the biaxial hinge mechanism with respect to the display part side housing | casing. It is a perspective view which shows connection with a biaxial hinge mechanism and the operation part side housing | casing. It is a disassembled perspective view which shows the component inside a display side housing | casing.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Mobile phone 2 Operation part side housing | casing 3 Display part side housing | casing 4 Connection part 6 Hinge case 20 Biaxial hinge mechanism 21 Connection arm 21a Support arm part 21b Holding arm part 22 Connection bracket 23 Connection cylinder 24 Turning shaft 28 Fastening screw 30 Display 32 Sub Display 33 Support Frame 34 Connecting Wall 35 Fitting Groove 36 Sub Fitting Groove 40 Standing Claw

Claims (5)

A substantially flat first housing, and a second housing connected to the first housing via a hinge portion;
The hinge part has a fixing part fixed in the first housing,
The first housing includes a sheet metal member having a bent portion whose end side is bent in the thickness direction of the first housing;
The bent portion of the sheet metal member is provided with a screw hole, and is fastened together with the fixed portion by a screw inserted in a direction orthogonal to the thickness direction of the first housing. . The hinge portion includes a first rotating shaft that allows the first housing to transition between an open state and a closed state with respect to the second housing, and an axis orthogonal to the first rotating shaft. A second rotation shaft that allows the body to rotate relative to the second housing;
The hinge portion is fixed to the second housing so as to be rotatable about the first rotation shaft,
The portable electronic device according to claim 1, wherein the fixing portion is rotatable with respect to the hinge portion by the second rotation shaft.   The first casing is configured to include a casing piece formed by resin insert molding the sheet metal member, and a bent portion of the sheet metal member is connected to the fixing portion via a resin layer formed by the resin insert molding. 3. The portable electronic device according to claim 1 or 2, wherein the fastening with screws is performed.   4. The portable electronic device according to claim 1, wherein the sheet metal member is a member that holds a back side of a display provided in the first housing. 5.   5. The portable electronic device according to claim 4, wherein the sheet metal member has a raised nail portion cut out and bent toward the back side of the display, and the sub display is positioned at the raised nail portion. machine.

Images