JP5172277B2 - Portable electronic devices - Google Patents

Description

  The present invention relates to a mobile communication device such as a mobile phone or a simple mobile phone, or a portable electronic device such as a PDA (Personal Digital Assistant). In particular, the present invention relates to a structure of a foldable portable electronic device configured to be foldable.

  In recent years, a mobile phone, which is one of portable electronic devices, includes a display unit and an operation unit in addition to an integrated mobile phone (a so-called straight type) in which a display unit and an operation unit are configured by a single casing. Each of the constituent casings is formed separately, and a foldable type in which the display unit side casing is connected to the operation unit side casing so that the display unit side casing can be opened and closed, or the display unit side casing is connected to the operation unit side casing. Various types have been proposed, such as a slide type that is slidably coupled to the slidable type.

  For example, a foldable mobile phone can enlarge the liquid crystal display screen arranged in the display unit side body by configuring the display unit side body separately from the operation unit side body. When not in use, it is possible to carry it compactly by folding the two casings so that they overlap.

  Moreover, in recent foldable mobile phones, in addition to the multifunctional and high performance of various functions such as mounting a TV tuner, the housing itself not only simply opens and closes, but also uses a biaxial hinge mechanism. Accordingly, mobile phones capable of rotating and the like have been put into practical use.

  By the way, the folding-type mobile phone configured as described above needs to regulate the deployment angle in the deployed state because the display unit side body and the operation unit side body are connected so as to be openable and closable.

On the other hand, in a foldable mobile phone having a two-axis hinge mechanism, a mobile phone is disclosed in which protrusions for abutment are provided on each housing so as to restrict the development beyond a certain level in the deployed state. (For example, refer to Patent Document 1).
JP 2005-299835 A

  However, in the mobile phone described in Patent Document 1, since the projecting part for abutment is provided on the exposed surface of the lower housing, the appearance is inferior and the design of the mobile phone is deteriorated. there were.

  Here, in the folding mobile phone having the biaxial hinge mechanism, a hinge module is built in the connecting portion of each housing so that the other can be opened and closed and rotated. Thereby, in order not to expose the abutting portion on the surface of the housing, the projecting portion for abutting is formed on the portion where the connecting portion of the housing on the side where the projecting portion for abutting is formed is fitted. , And the cover portion covering the hinge module is formed with a part of the recess of the abutting structure, so that the deployment angle can be regulated without impairing the aesthetic appearance.

  However, in this case, since the stress at the time of deployment concentrates on the cover member, the cover member is required to have high strength. In response to this, for example, it is possible to receive stress at the threaded portion by fastening the cases constituting the cover member with screws, but in this case, the case becomes larger and the cost increases. There was a problem.

  It is an object of the present invention to provide a small-sized and low-cost portable electronic device that can efficiently disperse and absorb stress applied to a connecting portion when a foldable portable electronic device is deployed.

  The present invention connects a first casing, a second casing, the first casing, and the second casing, and the first casing is opened and closed with respect to the second casing. A hinge portion including a first rotation axis for transitioning to the first rotation axis and a second rotation axis orthogonal to the first rotation axis and for rotating the first casing relative to the second casing; The hinge unit is coupled to the first housing and rotates about the second rotation shaft, and the first rotation with respect to the second housing. And an opening / closing shaft member that rotates about the shaft, and is covered with a predetermined cover member, and the end portion of the second casing has the opening / closing shaft member at both ends thereof and the first rotation shaft. A first bearing portion and a second bearing portion that pivotably support at the center are formed so as to protrude between the first bearing portion and the second bearing portion. A fitting portion in which the hinge portion covered by the cover member is disposed is provided, and a first abutting portion and a second abutting portion that are in contact with each other in the opened state are provided on the fitting portion and the surface of the cover member. And at least one of the rotating shaft member and the opening / closing shaft member is in contact with at least a part of the back surface of the back surface of the cover member. The present invention relates to a characteristic portable electronic device.

  The first abutting portion is formed with a first flat surface, the second abutting portion is formed with a second flat surface, and the first flat surface and the second flat surface are separated from each other. A third flat surface is formed at the contact portion of the rotating shaft member or the opening / closing shaft member with the back surface of the second abutment portion. The second plane and the third plane are preferably in contact with each other in the open state in parallel with each other.

  The cover member includes a first cover and a second cover, and the first cover and the second cover are formed on the first cover and the second cover. It is preferable that the hinge portion is formed by means so as to be fitted.

  Further, the rotating shaft member and the opening / closing shaft member are formed so as to be capable of being assembled, and the hinge portion has an adjusting means for adjusting an assembly angle between the rotating shaft member and the opening / closing shaft member, The fitting means is preferably composed of a locking portion and a locked portion.

  The adjusting means includes a screw that fastens the rotating shaft member and the opening / closing shaft member, and the insertion direction of the screw is a direction in which the first housing and the second housing overlap in the closed state. It is preferable to match.

  According to the present invention, it is possible to provide a small-sized and low-cost portable electronic device that can efficiently disperse and absorb the stress applied to the connecting portion when the foldable portable electronic device is deployed.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  First, the overall structure of the mobile phone 1 as a mobile electronic device will be described with reference to FIGS. FIG. 1 shows a state (first open state) in which a mobile phone 1 as a mobile electronic device is opened. FIG. 2 shows a state in which the display unit side body 3 is rotated by a predetermined angle about the rotation axis Y. FIG. 3 shows a state (second open state) in which the display unit side body 3 is rotated 180 ° about the rotation axis Y. FIG. 4 shows a state in which the mobile phone 1 is closed (first closed state).

  As shown in FIGS. 1 to 4, the mobile phone 1 according to the present embodiment includes an operation unit side case 2 that is a first case, a display unit side case 3 that is a second case, and an operation unit. A connecting unit 100 that connects the side housing 2 and the display unit side housing 3. The connecting part 100 has a hinge part 4 having a biaxial hinge mechanism, and the hinge part 4 rotates the display unit side body 3 around an opening / closing axis X that is a first rotation axis, thereby allowing the mobile phone 1 to rotate. Open / close shaft member 110 that can be switched between the open state and the closed state, and the display unit side body 3 is rotated about the rotation axis Y that is the second rotation axis to bring the mobile phone 1 into the front state. And a rotating shaft member 120 that can be switched between the reverse state. Thereby, the mobile phone 1 can be foldably deformed into an open state and a closed state, and the display unit side body 3 can be switched between a front state and a back state in each of the open state and the closed state. Become.

  Here, the open state refers to a state where the operation unit side body 2 and the display unit side body 3 are arranged so as not to overlap each other (see FIG. 1), and the closed state refers to the operation unit side body. 2 and the display unit side body 3 are arranged so as to overlap each other (not shown). In the open state, the operation key group 11 disposed on the front case 2a of the operation unit side body 2 and the display 30 disposed on the front case 3a of the display unit side body 3 are on the same side in the open state. The display 30 in the display unit side body 3 and the operation key group 11 in the operation unit side body 2 are opposed to each other in the state of being arranged so as to face (first open state, see FIG. 1) or in the closed state. (Refer to FIG. 4). Further, the back state is a state in which the operation key group 11 in the operation unit side body 2 and the display 30 in the display unit side body 3 are arranged to face opposite sides in the open state (second open state, 3) or in the closed state, the display 30 in the display unit side body 3 and the operation key group 11 in the operation unit side body 2 are exposed without facing each other (second closed state, not shown). ).

  Next, basic structures of the operation unit side body 2, the display unit side body 3, and the connection unit 100 in the mobile phone 1 will be described.

  The outer surface of the operation unit side body 2 includes a front case 2a and a rear case 2b. The operation unit side body 2 exposes, on the front case 2a side, an operation key group 11 and a voice input unit 12 as a microphone to which a voice uttered by a user of the mobile phone 1 is input. Are arranged as follows.

  The operation key group 11 is an input composed of function setting operation keys 13 for operating various functions such as various settings, telephone book functions, mail functions, etc., numeric keys for inputting numbers of telephone numbers, characters such as mails, and the like. The operation key group 14 includes a determination operation key 15 as an operation member for performing determination in various operations, scrolling in the vertical and horizontal directions, and the like. Each key constituting the operation key group 11 is predetermined according to a deformed state such as an open / close state or 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). And each key which comprises the operation key group 11 is pressed by the user, and the operation | movement according to the function allocated to each key is performed.

  The voice input unit 12 is disposed on the outer end side opposite to the connecting unit 100 side (upper end side) in the longitudinal direction of the front case 2a. That is, the voice input unit 12 is disposed on one outer end side when the mobile phone 1 is in the first open state.

  The outer surface of the display unit side body 3 includes a front case 3a and a rear case 3b. The front case 3a in the display unit side body 3 is arranged so as to expose a display 30 having a predetermined shape for displaying various information and a sound output unit 31 as a receiver for outputting sound on the other party side of the call. Is done. The audio output unit 31 is disposed on the outer end side opposite to the connecting unit 100 side (lower end side) 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 addition, a sub display 32 for displaying various types of information is exposed in the rear case 3 b of the display unit side body 3. 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.

  The connecting unit 100 connects the operation unit side body 2 and the display unit side body 3 so as to be openable and closable at an arbitrary angle around the opening / closing axis X, and rotates at an arbitrary angle around the rotation axis Y. The hinge unit 4 includes a biaxial hinge mechanism that is movably connected, and a front cover 160 and a rear cover 170 that cover the hinge unit 4 and can be fitted to each other.

  Next, the internal structure of the operation unit side body 2, the display unit side body 3, and the connection unit 100 will be described with reference to FIGS. 5 to 10. FIG. 5 is an exploded perspective view of the operation unit side body 2. FIG. 6 is an AA end view of the operation unit side body 2 with the internal structure omitted. FIG. 7 is an exploded perspective view of the display unit side body 3. FIG. 8 shows an exploded perspective view of the connecting portion 100. FIG. 9A shows the hinge portion 4 and the front cover 160 and the rear cover 170 that cover the hinge portion 4, and FIG. 9B shows the back side of the rear cover 170. 10A shows a fitted state of the front cover 160 and the rear cover 170, FIG. 10B shows a BB end view of FIG. 10A, and FIG. 10C shows the first abutting portion 240 and the first abutting portion 240. FIG. 3 is a partially enlarged view showing a contact state with the two abutting portions.

  As shown in FIG. 5, the operation unit side body 2 includes a front case 2a, a key sheet 40 that constitutes the operation key group 11 described above, a flexible printed wiring board 50 on which key switches are arranged, and a shield case 60. And a circuit board 70 including various electronic components such as a reference potential pattern layer and an RF (Radio Frequency) module for a mobile phone, and a rear case 2b. In the rear case 2b, the antenna 80 is disposed so as to be extensible to the outside, and the battery 90 is accommodated so as to be removable from the outside of the rear case 2b. The rear case 2b is closed by the lid portion 25 after the battery 90 is accommodated.

  The front case 2a and the rear case 2b are disposed such that the concave inner surfaces face each other, and are joined so that the outer peripheral edges thereof overlap each other. Further, between the front case 2a and the rear case 2b, the key sheet 40, the flexible printed wiring board 50, the shield case 60, and the circuit board 70 are stored and arranged in this order from the front case 2a side.

  Various electronic components and a reference potential pattern layer (not shown) are formed on the first surface 72 of the circuit board 70. Various electronic components are arranged on the second surface 73 of the circuit board 70.

  The shield case 60 is a metal member having a shape in which one wide surface of a thin rectangular parallelepiped is opened. The shield case 60 may be formed of a skeleton made of resin and a metallic conductor film formed on the surface thereof, in addition to being formed of metal.

  The flexible printed wiring board 50 has a plurality of key switches 51, 52, 53 on the surface on the front case 2a side. The key switches 51, 52, 53 of the flexible printed wiring board 50 have a structure having a metal dome of a metal plate that is curved in a bowl shape and is three-dimensionally formed. When the apex of the bowl-shaped shape is pressed, the metal dome comes into contact with a switch terminal formed in an electric circuit (not shown) printed on the surface of the flexible printed wiring board 50 and is electrically connected. Note that the flexible printed wiring board 50 is obtained by sandwiching wiring between a plurality of insulating films.

  The key sheet 40 is configured by attaching the operation key group 11 to the surface of a silicon rubber sheet 41 with an adhesive. The function setting operation key 13, the input operation key 14, and the determination operation key 15 constituting the operation key group 11 in the key sheet 40 are disposed at positions facing the key switches 51, 52, 53 on the flexible printed circuit board 50. These are disposed so as to be exposed from a key hole 45 formed in the front case 2a described later.

  A plurality of key holes 45 are formed on the inner surface of the front case 2a facing the display 30 of the display unit side body 3 in a state in which the cellular phone 1 is folded. From each of the plurality of key holes 45, the pressing surfaces of the function setting operation key 13, the input operation key 14, and the determination operation key 15 formed on the key sheet 40 are exposed. By pressing the function setting operation key 13, the input operation key 14, and the determination operation key 15 constituting the exposed operation key group 11 so as to press down, the metal dome in each of the corresponding key switches 51, 52, 53 is provided. The apex of (saddle-like shape) is pressed and comes into electrical contact with the switch terminal.

  A first bearing portion 210 and a second bearing portion 220 are formed on the upper end portion side of the front case 2a so as to protrude from the surface of the front case 2a to the side opposite to the side where the rear case 2b is disposed. The first bearing portion 210 pivotally supports one end 111 of the opening / closing shaft member 110 constituting the connecting portion 100, and the second bearing portion 220 pivots on the shaft member 131 fixed to the other end 112 of the opening / closing shaft member 110. Support. That is, the first bearing part 210 and the second bearing part 220 pivotally support the opening / closing shaft member 110 so as to be rotatable about the opening / closing axis X.

  Between the 1st bearing part 210 and the 2nd bearing part 220, the fitting part 230 by which the connection part 100 by which the opening-and-closing shaft member 110 is axially fixed by the 1st bearing part 210 and the 2nd bearing part 220 is arrange | positioned is arrange | positioned. It is formed. In the fitting portion 230, the distance between the inner wall portion of the first bearing portion 210 and the inner wall portion of the second bearing portion 220 is substantially the same as the width of the front cover 160 and the rear cover 170 of the connecting portion 100 (slightly wider). ) And the connecting part 100 is formed so as to be fitted. A fitting surface 231 is formed on the surface of the front case 2 a in the fitting part 230.

  The fitting surface 231 prevents the front cover 160 and the rear cover 170 constituting the outer shape of the connecting portion 100 from coming into contact with each other when the connecting portion 100 transitions from the closed state to the open state due to the rotation of the opening / closing shaft member 110. It is formed in a concave shape. In other words, the fitting surface 231 has a curved shape along the outer shapes of the front cover 160 and the rear cover 170 of the connecting portion 100.

  Further, the fitting surface 231 is formed with a first abutting portion 240 that regulates the deployment angle of the display unit side body 3 in the open state. The first abutting portion 240 is formed so as to be able to abut on a second abutting portion 101 (described later) formed on the rear cover 170 of the connecting portion 100. The deployment angle of the section side housing 3 is regulated.

  Here, the first abutting portion 240 is formed on the upper end side of the front case 2a so as to protrude to the side opposite to the side where the rear case 2b is disposed. Further, the first abutting portion 240 constitutes an end portion of the fitting surface 231, and does not contact the connecting portion 100 in the closed state and the transition state from the closed state to the open state, and is in the open state. It is formed so as to be in contact with the second abutting portion 101 only at (see FIG. 10C).

  Further, the first abutting portion 240 is formed with a first flat surface 241 that extends in the width direction of the front case 2a and is formed in a rectangular shape. The first flat surface 241 is formed so as to be able to abut on a second flat surface 102 described later formed in the second abutting portion 101 in the open state. Specifically, the first plane 241 is brought into contact with the second plane 102 in the open state. (See FIG. 10 (c)). In other words, the first flat surface 241 and the second flat surface 102 are in contact with each other in an open state in a surface contact state in which their surfaces are parallel to each other.

  As shown in FIG. 7, the display unit side body 3 includes a display window 300, a display unit 310, a front case 3a including an internal frame made of a metal member, a reference potential pattern layer, and display electronics. A circuit board 320 including components, a sub display unit 330, and a rear case 3b are provided.

  The front case 3a and the rear case 3b are arranged so that their concave inner surfaces face each other, and are joined so that their outer peripheral edges overlap. Between the front case 3a and the rear case 3b, a circuit board 320 and a sub display unit 330 are stored and arranged in this order from the front case 3a side. A display window 300 is provided on the surface of the front case 2a. And the display unit 310 are fitted in this order.

  The display unit 310 includes a display 30 and a holder (not shown) that fixes the display 30.

  The front case 3a has a metal sheet metal member disposed therein. In the front case 3a, shallow concave housing portions are formed on the front case 3a side and the rear case 3b side with the sheet metal member interposed therebetween. The display unit 310 is accommodated in the accommodating part on the front case 3a side, and the circuit board 320 is accommodated in the accommodating part on the rear case 3b side. Here, the sheet metal member functions as a reinforcing member for securing rigidity with respect to a bending operation and a twisting operation in the display unit side body 3 and a shield for electrostatic countermeasures.

  Further, a connecting hole 33 that is connected to the connecting portion 100 is provided on the lower end side of the front case 3a. Specifically, a connection hole 33 connected to the rotating shaft member 120 of the connection part 100 is provided on the lower end side of the front case 3a. The front case 3a and the rotating shaft member 120 are overlapped with a connecting hole 33 provided in the front case 3a and a connecting hole 122a provided in a frame 122, which will be described later, constituting the rotating shaft member 120 and capable of receiving a female screw. These are connected by inserting a screw member (not shown) and screwing them. The connection hole 33 is protected by being covered with a cover rubber (not shown) after being connected to the rotary shaft member 120.

  As described above, the circuit board 320 is accommodated in the accommodating portion on the rear case 3b side in the front case 3a. Various electronic parts (not shown) are arranged on the rear case 3b side of the circuit board 320. In addition, various electronic components form circuit blocks 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 sub display unit 330 includes a sub display 32 and a holder (not shown) for fixing the sub display 32. The sub display unit 330 is disposed so as to be sandwiched between the rear case 3 b and the circuit board 320. Further, the sub display unit 330 is arranged so as to be exposed from the window 3c formed in the rear case 3b.

  As shown in FIG. 8, the connecting part 100 includes a front cover 160, a rear cover 170, and a hinge part 4 having a biaxial hinge mechanism. The hinge portion 4 is configured by screwing (connecting) the opening / closing shaft member 110 constituting the opening / closing hinge and the rotating shaft member 120 constituting the rotating hinge with the screw members S1 and S2. This screwing is performed at at least two symmetrical positions around the axial direction of the rotation axis Y. In the present embodiment, screwing is performed with two sets of screws, one at a time around the axial direction of the rotation axis Y.

  The front cover 160 and the rear cover 170 are disposed so that the inner surfaces of the concave shapes face each other, and are coupled with the hinge portion 4 interposed therebetween so that the outer peripheral edges of the front cover 160 and the rear cover 170 overlap each other. The width of the front cover 160 and the rear cover 170 (the width in the direction along the opening / closing axis X) is greater than the width between the inner wall portion of the first bearing portion 210 and the inner wall portion of the second bearing portion 220 in the fitting portion 230. Is slightly narrower and can be fitted into the fitting portion 230.

  The front cover 160 is formed with four locking claws 161 protruding to the rear cover 170 side, and is formed so as to be able to be locked with four locked portions 171 corresponding to the respective formed on the rear cover 170. . That is, the front cover 160 and the rear cover 170 are engaged by claw fitting.

  The rear cover 170 is formed with a second abutting portion 101 that is engaged with the first abutting portion 240 in the open state on the cover surface. In addition, the second abutting portion 101 is formed with a second flat surface 102 formed in a planar shape, and the second flat surface 102 abuts on the first abutting portion 240. Specifically, the second plane 102 is formed to be parallel to the first plane 241 so as to be in surface contact with the first plane 241 formed in the first abutting portion 240 in the open state. Yes. In other words, the first plane 241 and the second plane 102 abut so that forces acting in the opening direction can be received in a state of surface contact with each other when transitioning to the open state (see FIG. 10C).

  The second abutting portion 101 of the rear cover 170 has a fourth flat surface 103 formed on the back surface of the cover. The fourth plane 103 is formed so as to be parallel to the second plane 102. That is, the fourth flat surface 103 on the back surface side is provided at a position corresponding to the surface opposite to the second flat surface 102 on the front surface side in the second abutting portion 101, and the portions where these are formed have the same plate thickness. Accordingly, the force from the second plane 102 is uniformly transmitted to the fourth plane 103, and the third planes 142 and 143 that are in contact with the fourth plane 103 are also parallel to the second plane 102.

  The opening / closing shaft member 110 is formed in a hollow cylindrical shape. A hollow cylindrical member 130 formed of a material having a low friction coefficient is fitted to one end 111, and an opening / closing shaft member 110 is opened to the other end 112. A first shaft member 131 that biases rotation in operation is fixed. The cylindrical member 130 is made of, for example, polyacetal resin (POM) that is a material having a low friction coefficient. Further, a notch 113 in which a part of the cylindrical shape is notched is formed at a substantially central portion between the one end 111 and the other end 112.

  The cutout portion 113 is provided with a first connection hole 151 and a second connection hole 152 for screwing the rotary shaft member 120 to a portion exposed by the cutout. Two first and second connection holes 151 and 152 are provided in a direction along the opening / closing axis X in a direction in which the notch 113 is not opened. The first and second connection holes 151 and 152 are disposed at positions corresponding to first and second screw holes 124 a and 124 b described later formed in the rotary shaft member 120.

  Then, screw members S1 and S2 for screwing are inserted from the first connection hole 151 and the second connection hole 152 of the notch 113, and the rotary shaft member 120 located on the opposite side to the notch 113. The opening / closing shaft member 110 and the rotating shaft member 120 are connected to each other by being screwed into the first and second screw holes 124a and 124b.

  The insertion directions of the first and second screw holes 124a and 124b with respect to the first connection hole 151 and the second connection hole 152 coincide with the direction in which the display unit side body 3 and the operation unit side body 2 overlap. In addition, the notch 113 is formed in the state where the display unit side body 3 and the operation unit side body 2 are closed around the opening / closing axis X (closed state). It is formed at a position that is not blocked by the operation unit side body 2. Therefore, the screw members S1 and S2 can be tightened in the closed state and the rear cover 170 removed.

  First and second wall portions 140 and 141 extending toward the rear cover 170 extend from one end portion of the cutout portion 113 (one end portion side in the direction orthogonal to the opening / closing axis X of the opening / closing shaft member 110). The first and second wall portions 140 and 141 have third flat surfaces 142 and 143 formed in a substantially flat shape at the tips thereof, and the third flat surfaces 142 and 143 are formed on the back surface of the rear cover 170 (concave shape). It is formed so as to be in contact with the fourth plane 103 formed on the inner surface. The third planes 142 and 143 are formed so as to be parallel to the fourth plane 103 in the open state.

  Accordingly, the first plane 241, the second plane 102, the fourth plane 103, and the third plane 142 (143) are in contact with each other so as to be parallel to each other in the open state. And when each comes in surface contact, it becomes possible to absorb the stress concerning the first and second abutting portions in a dispersed state.

  At the other end of the notch 113 (the other end side in the direction orthogonal to the opening / closing axis X of the opening / closing shaft member 110), the screw members S1, S2 are screwed to the opening / closing shaft member 110 and the rotating shaft member 120. A first adjustment recess 114 and a second adjustment recess 115 that constitute an adjustment unit that adjusts the positional relationship between the operation unit side body 2 and the display unit side body 3 are formed by changing the degree of fastening.

  The first and second adjustment concave portions 114 and 115 are formed so as to be able to contact the first and second adjustment convex portions 127 and 128 protruding in the direction of the opening / closing shaft member 110 from the rotating shaft member 120 side (FIG. 12). The first and second adjustment protrusions 127 and 128 are formed so as to be recessed in the same direction as the protruding direction. Specifically, as shown in FIG. 13, the first and second adjustment recesses 114 and 115 formed in the notch 113 have inclined surfaces 114a and 115a, and the first and second adjustment protrusions. The end portions 127a and 128b of the portions 127 and 128 are in contact with each other at the inclined surfaces 114a and 115a.

  The rotating shaft member 120 is formed in a substantially L shape and is connected to a connecting plate 121 connected to the opening / closing shaft member 110, a frame 122 formed in a substantially U shape and connected to the display unit side body 3, And a second shaft member 123 that rotatably connects the frame 122 to the connecting plate 121.

  The connecting plate 121 includes a first connecting plate 124 joined to the opening / closing shaft member 110, and a second connecting plate 125 provided in a direction orthogonal to the first connecting plate 124 and continuous with the second shaft member 123. Is done. The first connection plate 124 is provided with first and second screw holes 124a and 124b formed so as to overlap the first and second connection holes 151 and 152 of the opening / closing shaft member 110. In a state where the screw members S1 and S2 are inserted through the two connecting holes 151 and 152, the opening and closing shaft member 110 and the rotating shaft member 120 are connected by screwing with the first and second screw holes 124a and 124b. .

  In addition, on the end side of the first connecting plate 124 (the end side in the direction orthogonal to the opening / closing axis X of the opening / closing shaft member 110), the screw member S1 is used for screwing the opening / closing shaft member 110 and the rotating shaft member 120. The first adjustment convex portion 127 and the second adjustment convex portion 128 that constitute the adjusting means for adjusting the positional relationship between the opening / closing shaft member 110 and the rotating shaft member 120 by changing the degree of fastening of S2 are formed. .

  The first and second adjustment protrusions 127 and 128 protrude toward the rotating shaft member 120, and when the opening and closing shaft member 110 and the rotating shaft member 120 are screwed together, the first and second adjustment protrusions 114 and 115 It is formed to abut.

  The frame 122 is joined to a part of the outer peripheral surface on the lower end side of the display unit side body 3 and is rotatably connected to the second shaft member 123. A hole 126 is provided in a connecting portion between the frame 122 and the second shaft member 123, and the frame 122 and the second shaft member are inserted into the hole 126 by rotatably fitting the second shaft member 123. 123 are connected.

  The second shaft member 123 is formed in a hollow shape and communicates with the operation unit side body 2 side through the hole 126 of the frame 122. Accordingly, the second shaft member 123 can be inserted with a cable that electrically connects the circuit board 70 disposed in the operation unit side body 2 and the circuit board 320 disposed in the display unit side body 3. .

  Here, adjustment means for adjusting the positional deviation between the display unit side body 3 and the operation unit side body 2 will be described with reference to FIGS. 11 and 12. FIG. 11A shows a state in which there is a positional deviation between the distal end portion of the operation unit side body 2 and the distal end portion of the display unit side body 3, and FIG. 11B shows the operation unit side body 2. This shows a state where there is no positional deviation between the front end of the display unit and the front end of the display unit side body 3. FIG. 12 is a partial enlarged cross-sectional view showing a contact portion between the first (second) adjustment convex portion 127 (128) and the first (second) adjustment concave portion 114 (115).

  When the mobile phone 1 according to the present embodiment is assembled to the state where the display unit side body 3 and the operation unit side body 2 are connected by the connecting unit 100 (note that the front cover 160 of the connecting unit 100 is attached). However, when the rear cover 170 is not attached), as shown in FIG. 12B, when the positional deviation between the distal end portion of the display unit side body 3 and the distal end portion of the operation unit side body 2 does not occur. Can attach the rear cover 170 to complete the mobile phone 1. In addition, since the front cover 160 and the rear cover 170 are joined by claw fitting, they can be attached even after the positional deviation is adjusted.

  However, as shown in FIG. 11A, when the positional deviation between the distal end portion of the display unit side body 3 and the distal end portion of the operation unit side body 2 occurs, the screw member S1 (S2) and the second member The positional relationship between the opening / closing shaft member 110 and the rotating shaft member 120 is corrected by changing the degree of fastening of the screw in the screwing by the first (second) screw hole 124a (124b), and thus the display unit side body Therefore, it is necessary to correct the positional deviation between the distal end portion 3 and the distal end portion of the operation unit side body 2.

  Here, both the contact portion of the opening / closing shaft member 110 with the notch 113 and the contact portion of the rotating shaft member 120 with the first connecting plate 124 are changed by changing the degree of fastening of the screw in screwing. Adjustment means for adjusting the positional relationship between the opening / closing shaft member 110 and the rotating shaft member 120 is formed. Specifically, the other end of the notch 113 is provided with first and second adjustment protrusions 127 and 128 projecting toward the first connecting plate 124, and the first connecting plate 124 has a cutout. First and second adjustment recesses 114 and 115 that are recessed on the side opposite to the notch direction of the notch 113 are provided.

  The first and second adjustment concave portions 114 and 115 have a concave shape corresponding to the shape of the first and second adjustment convex portions 127 and 128 in the protruding direction. Therefore, the opening / closing shaft member 110 and the connecting plate The first and second adjustment protrusions 127 and 128 and the first and second adjustment recesses 114 and 115 are in contact with each other in a state where the screw 121 is fastened with the screw 121. Specifically, as shown in FIG. 12, the first and second adjustment recesses 114 and 115 formed on the first and second adjustment protrusions 127 and 128 side of the notch 113 are inclined surfaces 114a and 115a. The end portions 127a and 128a of the first and second adjustment convex portions 127 and 128 are in contact with each other at the inclined surfaces 114a and 115a.

  For example, as shown in FIG. 11, with respect to the mobile phone 1 in the first closed state, the front end portion (the end portion opposite to the hinge portion 4) of the display unit side body 3 is arranged on the front upper side, and the front lower side It is assumed that the distal end portion of the display unit side body 3 is shifted to the left side (tilted) in a state where the base end portion (end portion on the hinge unit 4 side) of the display unit side body 3 is arranged on the left side ( (See FIG. 11 (a)).

  In such a state, the degree of fastening of the screw member S1 on the right side (the side opposite to the side where the tip of the display unit side body 3 is inclined) is increased. As a result, the first adjustment convex portion 127 is attracted to the first adjustment concave portion 114, and a force is applied in a direction in which the first adjustment convex portion 127 and the first adjustment concave portion 114 are displaced from each other. For example, a force is applied in a direction in which the end portion 127a goes up the inclined surface 114a.

  Here, the rotation shaft member 120 is connected to the operation unit side body 2 and hardly moves with respect to the operation unit side body 2, so that the connecting plate 121 is relative to the operation unit side body 2. Move to. Thereby, the rotating shaft member 120 is drawn toward the front lower side (the connecting portion 100 side) in FIG. Further, since the left second screw member S2 is fixed, the rotary shaft member 120 rotates clockwise around the vicinity of the left first screw member S2, and the opening / closing shaft member 110 and the rotary shaft member are rotated. The display unit side body 3 fixed to the frame 122 of 120 also rotates clockwise.

  As a result, the front end of the display unit side body 3 moves in a direction to reduce the positional deviation. Therefore, by appropriately setting the degree of fastening of the screw member, it is possible to correct the positional deviation between the distal end portion of the display unit side body 3 and the distal end portion of the operation unit side body 2.

  In order to move the tip of the display unit side body 3 in the direction opposite to the above example, the screw S2 on the side opposite to the above example (left side) may be further tightened. In some cases, both screw members S1 and S2 may be tightened to correct the positional deviation. Further, the positional deviation can be corrected by loosening the fastening of the screw members S1 and S2.

  Next, the opening / closing operation of the mobile phone 1 will be described with reference to FIG. FIG. 13A shows a cross-sectional view in the closed state of the mobile phone 1 with the internal structure omitted, and FIG. 13B shows a cross-sectional view in the open state.

  The mobile phone 1 is opened from the closed state by moving the end of the display unit side body 3 on the opposite side of the connection unit 100 around the opening / closing axis X so as to be separated from the operation unit side body 2. Transformed into a state. That is, the mobile phone 1 is deformed from the closed state to the open state by applying a force in the direction of the arrow F1 to the end of the display unit side body 3 opposite to the connecting unit 100.

  The display unit side body 3 to which the force in the direction of the arrow F1 is applied to the end portion transitions from the closed state to the open state. However, the second abutting portion 101 formed in the connecting portion 100 has a predetermined deployment angle. The first engagement part 240 formed on the fitting part 230 is brought into contact with the first abutment part 240 to be locked, and the development is restricted.

  When the expansion of the display unit side body 3 is restricted, the mobile phone 1 is in an open state, but the force applied to the display unit side body 3 causes a stress on the connecting part 100 that restricts the expansion. . Specifically, stress in the directions of arrows F2 and F3 (see FIG. 10C) is generated in the first and second abutting portions 240 and 101 that restrict the deployment.

  Here, the stress generated on the first abutting portion 240 side is first transmitted to the front case 2a of the operation unit side body 2. Here, the stress is absorbed because the front case 2a has a predetermined strength. It becomes possible to do.

  However, the stress generated in the second abutting portion 101 is transmitted to the rear cover 170 of the connecting portion 100. However, since the rear cover 170 is formed thin to reduce the size, it cannot withstand the stress as it is. There is a risk of damage. On the other hand, the second abutting portion 101 is disposed on the surface of the rear cover 170 and is in contact with a part of the hinge portion 4 that is firmly fixed. That is, a wall for receiving stress is formed on the rear surface of the rear cover 170. This makes it possible to receive stress at the abutting hinge portion 4.

  Specifically, the second abutting portion 101 has, on the back surface thereof, the first and second wall portions 140 and 141 of the opening / closing shaft member 110 constituting the hinge portion 4 and the second connection of the rotating shaft member 120. Since the front end of the plate 125 is also in contact, the stress generated in the second abutting portion 101 first causes the first and second wall portions 140 and 141 of the opening / closing shaft member 110 to contact the rear surface of the rear cover 170 from the rear cover 170. And it becomes possible to receive with the 2nd connection board 125.

  Since the open / close shaft member 110 including the first and second wall portions 140 and 141 is connected by the rotary shaft member 120 and the screw members S1 and S2, the connecting portion between the open / close shaft member 110 and the rotary shaft member 120 is connected. In this case, a part of the stress can be released. Furthermore, since the rotating shaft member 120 is connected to the display unit side body and the screw member, the stress can be removed here. As a result, the stress can be dispersed and absorbed without damaging the rear cover 170. Moreover, since the second abutting portion 101 is also in contact with the second connecting plate 125, it is possible to further distribute the stress in a balanced manner between the opening / closing shaft member 110 side and the rotating shaft member 120 side.

  The second plane is formed so as to be parallel to the third plane that is in contact with the fourth plane on the back side formed in parallel with the second plane. That is, the third plane is disposed via the rear cover in a state parallel to the second plane. In this way, the hinge part 4 and the second abutting part are in contact with each other on the surface, so that the contact area increases, it is possible to avoid stress concentration, and more stress is dispersed. It becomes possible to transmit to the hinge part 4 side in a state.

  In addition, the opening / closing shaft member 110 and the rotating shaft member 120 are connected by screwing, and the second abutting portion and the hinge portion are in contact with each other in a parallel state. Even in such a case, it is possible to efficiently absorb the stress generated in the connecting portion 100, and the hinge portion 4 can be reduced while the connecting portion 100 is reduced in size and thickness, and thus the entire mobile phone 1 is reduced in thickness and size. It is possible to ensure sufficient strength.

  Further, first and second adjustment convex portions 127 and 128 and first and second adjustment concave portions 114 and 115 as adjustment means are formed at the contact portion between the opening / closing shaft member 110 and the rotary shaft member 120. Therefore, the positional relationship between the display unit side body 3 fixed to the rotary shaft member 120 and the operation unit side body 2 fixed to the opening / closing shaft member 110 can be adjusted by the procedure described above. It is possible to easily adjust the positional deviation between the two tip portions.

  Further, since the opening / closing shaft member 110 and the rotating shaft member 120 are connected by screwing at two symmetrical positions around the axial direction of the rotation axis Y, the one screw member S1 and the other screw member S1 are connected. By fastening any of the screw members S2, the angle of the display unit side body 3 with respect to the operation unit side body 2 can be easily adjusted with the same operability.

  The notch 113 is closed by the display unit side body 3 and the operation unit side body 2 in a state where the display unit side body 3 and the operation unit side body 2 are closed around the opening / closing axis X. It is formed in a position that can not be. Moreover, the insertion direction of the screw member S1 with respect to the first screw hole 124a coincides with the direction in which the display unit side body 3 and the operation unit side body 2 overlap. Therefore, the screw member S1 can be easily fastened in a state where the display unit side body 3 and the operation unit side body 2 are closed around the opening / closing axis X.

  Further, since the opening / closing shaft member 110 and the rotating shaft member 120 are connected by screwing, the strength of the hinge portion 4 can be sufficiently ensured while reducing the thickness and size of the mobile phone 1 as a whole. Can do.

  Furthermore, since the opening / closing shaft member 110 and the rotating shaft member 120 can be manufactured separately, there are few restrictions on the shape of the manufacturing, and it is possible to place an order from a supplier suitable for each manufacturing, thereby reducing the cost of parts. In addition, it is easy to respond to short delivery times. In the present embodiment, the third plane is formed on the opening / closing shaft member 110, but may be formed on the tip of the second connecting plate 125 of the rotating shaft member 120. Even when formed at the tip of the second connecting plate 125, the same effect as the present invention can be obtained. The third plane is preferably formed at both the opening / closing shaft member 110 and the tip of the second connecting plate 125.

  In the present embodiment, a mobile phone is described as a mobile terminal device. However, the present invention is not limited to this, and a PHS (Personal Handy Phone System), a PDA (Personal Digital Assistant), a portable navigation device, It may be a notebook computer or the like.

  In this embodiment, a foldable mobile phone having a biaxial hinge mechanism will be described. However, the present invention is not limited to this. For example, a foldable mobile phone having a uniaxial hinge mechanism is described. Etc.

The state (1st open state) which opened the mobile telephone 1 as a portable terminal device is shown. A state in which the display unit side body 3 is rotated by a predetermined angle about the rotation axis Y is shown. A state (second open state) in which the display unit side body 3 is rotated by 180 ° about the rotation axis Y is shown. The state (1st closed state) which closed the mobile telephone 1 is shown. The disassembled perspective view of the operation part side housing | casing 2 is shown. The AA end view of the operation part side housing | casing 2 which abbreviate | omitted the internal structure is shown. The disassembled perspective view of the display part side housing | casing 3 is shown. The disassembled perspective view of the connection part 100 is shown. (A) shows the hinge part 4 and the front cover 160 and the rear cover 170 that cover the hinge part 4, and (b) shows the back side of the rear cover 170. (A) shows the fitting state of the front cover 160 and the rear cover 170, (b) shows the BB end view of (a), (c) shows the 1st abutting part 240 and the 2nd protrusion. The elements on larger scale of the contact state with this part are shown. (A) shows a state where a positional deviation occurs between the distal end portion of the operation unit side body 2 and the distal end portion of the display unit side body 3, and (b) shows the distal end of the operation unit side body 2. This shows a state in which there is no positional deviation between the display unit and the tip of the display unit side body 3. FIG. 12 is a partial enlarged cross-sectional view of a contact portion between the first (second) adjustment convex portion 127 (128) and the first (second) adjustment concave portion 114 (115). (A) shows sectional drawing in the closed state of the mobile telephone 1 which abbreviate | omitted the internal structure, (b) shows sectional drawing in an open state.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Mobile telephone 2 Operation part side housing | casing 3 Display part side housing | casing 4 Hinge part 100 Connection part 101 2nd abutting part 102 2nd plane 103 4th plane 110 Opening-closing axis member 120 Rotating shaft member 124a 1st screw hole 124b 1st 2 screw hole 140 1st wall part 141 2nd wall part 142 3rd plane 160 front cover 170 rear cover 210 1st bearing part 220 2nd bearing part 240 1st abutting part 241 1st plane S1, S2 screw member

Claims (5)

A first housing;
A second housing;
A first rotation shaft for connecting the first housing and the second housing and causing the second housing to transition between an open state and a closed state with respect to the second housing; and the first rotation A hinge portion that is orthogonal to an axis and includes a second rotation shaft for rotating the first housing relative to the second housing;
A portable electronic device comprising:
The hinge part is
A rotating shaft member coupled to the first housing and configured to rotate about the second rotating shaft;
An open / close shaft member that rotates about the first rotation axis with respect to the second housing, and is covered by a predetermined cover member,
A first bearing portion and a second bearing portion that pivotally support the opening / closing shaft member so as to be rotatable about the first rotating shaft are formed at both ends of the end portion of the second casing. ,
Between the first bearing part and the second bearing part, a fitting part in which the hinge part covered by the cover member is disposed is provided,
A first abutting portion and a second abutting portion that are in contact with each other in the open state are formed on the surface of the fitting portion and the cover member,
At least one of the rotating shaft member and the opening / closing shaft member is in contact with at least a part of the back surface of the back surface of the cover member at the second abutting portion. A first plane is formed on the first abutting portion,
A second flat surface is formed in the second abutting portion,
The first plane and the second plane are formed so as to be able to contact in the open state,
A third plane is formed in the contact portion of the second abutting portion with the back surface of the rotating shaft member or the opening / closing shaft member,
2. The portable electronic device according to claim 1, wherein the first plane, the second plane, and the third plane are in contact with each other in a parallel state in the open state. The cover member includes a first cover and a second cover,
2. The first cover and the second cover are formed so as to be fitted with the hinge portion interposed therebetween by fitting means formed on the first cover and the second cover. Or the portable electronic device of 2. The rotating shaft member and the opening / closing shaft member are formed so as to be assembled.
The hinge portion has an adjusting means for adjusting an assembly angle between the rotating shaft member and the opening / closing shaft member,
The portable electronic device according to claim 3, wherein the fitting means includes a locking portion and a locked portion. The adjusting means includes a screw for fastening the rotating shaft member and the opening / closing shaft member;
The portable electronic device according to claim 4, wherein an insertion direction of the screw coincides with a direction in which the first housing and the second housing overlap in the closed state.

Images